1202VLZ4

OWN E R S M A N U A L

12-Channel Compact Mixer

POWER ON PHANTOM ON

CAUTION: TO REDUCE THE RISK OF FIREREPLACE WITH CORRECT TYPE FUSE. REMOVEPOWER CORD BEFORE CHANGING VOLTAGE.

100VAC 120VAC 240VAC

MIC+4 4 34 / R 3 / L

CHANNEL INSERTBAL / UNBAL

R L

CONTROLROOM

BAL / UNBAL

ALTOUT

2 1PRE-FADER / PRE EQ TIP SEND / RING RETURN

100-120V: 500mA/250 V SLO-BLO220-240V: 250mA/250 V SLO-BLO

REPLACE WITH THE SAME TYPE FUSE AND RATING.DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE

UTILISE UN FUSIBLE DE RECHANGE DE MME TYPE.DEBRANCHER AVANT DE REMPLACER LE FUSIBLE

MAINOUT LEVEL

MAINRIGHT

BALANCED

MAINLEFT

BALANCED

REVISIONSERIAL NUMBERWARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICSHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN ORMOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLEPARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.AVIS: RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES FOR THE U.S. AND THE ICES-003 FOR CANADA. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.

2 1202VLZ4

1202VLZ4 Important Safety Instructions

1. Read these instructions. 2. Keep these instructions.3. Heed all warnings.4. Follow all instructions.5. Do not use this apparatus near water.6. Clean only with a dry cloth.7. Do not block any ventilation openings. Install in accordance with the

manufacturers instructions.8. Do not install near any heat sources such as radiators, heat registers,

stoves, or other apparatus (including amplifiers) that produce heat.9. Do not defeat the safety purpose of the polarized or grounding-type

plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

11. Only use attachments/accessories specified by the manufacturer.12. Use only with a cart, stand, tripod, bracket, or

table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

15. This apparatus shall not be exposed to dripping or splashing, and no object filled with liquids, such as vases or beer glasses, shall be placed on the apparatus.

16. Do not overload wall outlets and extension cords as this can result in a risk of fire or electric shock.

17. This apparatus has been designed with Class-I construction and must be connected to a mains socket outlet with a protective earthing connection (the third grounding prong).

18. This apparatus has been equipped with a rocker-style AC mains power switch. This switch is located on the rear panel and should remain readily accessible to the user.

19. The MAINS plug or an appliance coupler is used as the disconnect device, so the disconnect device shall remain readily operable.

PORTABLE CARTWARNING

CAUTION AVISRISK OF ELECTRIC SHOCK. DO NOT OPEN

RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK)NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL

ATTENTION: POUR EVITER LES RISQUES DE CHOC ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L'USAGER.

CONFIER L'ENTRETIEN AU PERSONNEL QUALIFIE.AVIS: POUR EVITER LES RISQUES D'INCENDIE OU D'ELECTROCUTION, N'EXPOSEZ PAS CET ARTICLE

A LA PLUIE OU A L'HUMIDITE

The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure, that may be of sufficient magnitude to constitute a risk of electric shock to persons.Le symbole clair avec point de flche l'intrieur d'un triangle quilatral est utilis pour alerter l'utilisateur de la prsence l'intrieur du coffret de "voltage dangereux" non isol d'ampleur suffisante pour constituer un risque d'lctrocution.

The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.Le point d'exclamation l'intrieur d'un triangle quilatral est employ pour alerter les utilisateurs de la prsence d'instructions importantes pour le fonctionnement et l'entretien (service) dans le livret d'instruction accompagnant l'appareil.

20. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorientorrelocatethereceivingantenna. Increasetheseparationbetweentheequipmentandthe

receiver. Connecttheequipmentintoanoutletonacircuitdifferentfrom

that to which the receiver is connected. Consultthedealeroranexperiencedradio/TVtechnicianfor

help. CAUTION: Changes or modifications to this device not expressly

approved by LOUD Technologies Inc. could void the user's authority to operate the equipment under FCC rules.

21. This apparatus does not exceed the Class A/Class B (whichever is applicable) limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian Department of Communications.

ATTENTION Le prsent appareil numrique nmet pas de bruits radiolectriques dpassant las limites applicables aux appareils numriques de class A/de class B (selon le cas) prescrites dans le rglement sur le brouillage radiolectrique dict par les ministere des communications du Canada.

22. Exposure to extremely high noise levels may cause permanent hearing loss. Individuals vary considerably in susceptibility to noise-induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time. The U.S. Governments Occupational Safety and Health Administration (OSHA) has specified the permissible noise level exposures shown in the following chart.

According to OSHA, any exposure in excess of these permissible limits could result in some hearing loss. To ensure against potentially dangerous exposure to high sound pressure levels, it is recommended that all persons exposed to equipment capable of producing high sound pressure levels use hearing protectors while the equipment is in operation. Ear plugs or protectors in the ear canals or over the ears must be worn when operating the equipment in order to prevent permanent hearing loss if exposure is in excess of the limits set forth here:

Duration, per day in hours

Sound Level dBA, Slow Response

Typical Example

8 90 Duo in small club6 924 95 Subway Train3 972 100 Veryloudclassicalmusic1.5 1021 105 Matt screaming at Troy about

deadlines0.5 1100.25 or less 115 Loudest parts at a rock concert

WARNING To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.

Correct disposal of this product. This symbol indicates that this product should not be disposed of with your household waste, according to the WEEE Directive (2012/19/EU) and your national law. This product should be handed over to an authorized collection site for recycling waste electrical and electronic equipment (EEE). Improper handling of this type of waste could have a possible negative impact on the environment and human health due to potentially hazardous substances that are generally associated with EEE. At the same time, your cooperation in the correct disposal of this product will contribute to the effective usage of natural resources. For more information about where you can drop off your waste equipment for recycling, please contact your local city office, waste authority, or your household waste disposal service.

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Part No. SW0970 Rev. B 08/142014 LOUD Technologies Inc. All Rights Reserved.

ContentsCHANNEL STRIP DESCRIPTION ............................... 13

U LIKE UNITY GAIN ............................. 1323. LEVEL .................................................... 1324. PRE-FADER SOLO ................................... 1325. MUTE/ALT 34 ...................................... 1326. PAN....................................................... 14 CONSTANT LOUDNESS ! ! ! ...................... 14 3-BAND EQ ............................................ 1427. LOW EQ ................................................. 1428. MID EQ .................................................. 1429. HI EQ ..................................................... 15 MODERATION DURING EQ ...................... 1530. AUX 2 SEND .......................................... 1531. AUX 1 SEND .......................................... 15

OUTPUT SECTION .................................................. 1632. MAIN MIX ............................................. 1633. CONTROL ROOM SOURCE MATRIX .......... 1634. CONTROL ROOM/SUBMIX ..................... 16 A WORD ABOUT PRE-FADER SOLO (PFL) 1735. RUDE SOLO LIGHT .................................. 1736. ASSIGN TO MAIN MIX ............................ 1737. METERS MANY DISPLAYS IN ONE! ....... 1738. PRE OR POST (AUX 1) ........................... 1839. AUX 1 MASTER ...................................... 1840. STEREO RETURNS ................................... 1841. RETURN TO AUX 1 ................................. 19 JACK NORMALLING ................................ 19

APPENDIX A: SERVICE INFORMATION .................... 20APPENDIX B: CONNECTIONS.................................. 20APPENDIX C: TECHNICAL INFORMATION ................ 24 SPECIFICATIONS ............................................. 24 BLOCK DIAGRAM ............................................ 25 TRACK SHEET.................................................. 261202VLZ4 LIMITED WARRANTY ............................ 27

IMPORTANT SAFETY INSTRUCTIONS ........................ 2CONTENTS .............................................................. 3FEATURES ............................................................... 4INTRODUCTION ...................................................... 4HOW TO USE THIS MANUAL .................................... 4GETTING STARTED ................................................... 5HOOKUP DIAGRAMS............................................... 6PATCHBAY DESCRIPTION ......................................... 8

1. MIC INS (CHANNELS 14) ........................ 82. LINE INS (CHANNELS 14) ........................ 83. LOW CUT (CHANNELS 14) ....................... 94. GAIN (CHANNELS 14) ............................ 95. STEREO LINE INS ...................................... 96. IMAGINARY CONTROL ............................ 9 EFFECTS: SERIAL OR PARALLEL? ................ 97. STEREO RETURNS ................................... 108. AUX SEND 1&2 ...................................... 109. TAPE IN ................................................. 1010. TAPE OUT .............................................. 1011. 1/4" MAIN OUTS ................................... 1012. PHONES ................................................ 1113. XLR MAIN OUTS ................................... 1114. XLR MAIN OUT LEVEL SWITCH ................ 1115. CONTROL ROOM OUTS ........................... 1116. ALT 34 OUTS ........................................ 1117. CHANNEL INSERT (CHANNELS 14 ) ........ 1118. POWER CONNECTION ............................. 1219. FUSE ...................................................... 1220. VOLTAGE SELECTOR ................................ 1221. POWER SWITCH ..................................... 1222. PHANTOM SWITCH ................................ 12

Please write your serial number here for future reference (i.e., insurance claims, tech support, return authorization, make dad proud, etc.) Purchased at: Date of purchase:

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4 1202VLZ4

1202VLZ4 Features

12-channelmixerfeaturingoursignature high-headroom,low-noisedesign

4boutique-qualityOnyxmicpreamps Ultra-wide60dBgainrange 128.5dBdynamicrange +22dBulineinputhandling Extendedfrequencyresponse Distortionunder0.0007%(20Hz-50kHz)

ImprovedRFrejection,perfectforbroadcastapplications

Phantompowerforcondensermics

12high-headroomlineinputs

3-bandEQ(80Hz,2.5kHz,12kHz)

18dB/oct75Hzlow-cutfilteronmicinputchannels

Auxsend,level,panandPFLsolooneach channel

StereoreturnforconnectingFXprocessor orotherstereosource

ALT3/4stereobusforaddedroutingflexibility

Controlroom/phonessourcematrix

High-resolution12-segmentstereometers

Sealedrotarycontrolresistdustandgrime

Built-Like-A-Tankruggedsteelchassiswithpowder-coatfinish

High-visibility,high-contrastcontrolsdeliverconvenientat-a-glancevisualfeedback

Rack-mountabledesignusinganoptionalrackearkit

Multi-voltagepowersupplyforworldwideuse

IntroductionThe12-channel1202VLZ4deliverstheoutstanding

qualityofourflagshipOnyxpreampsinacompactmixerdesignwiththehigh-headroom/low-noiseperformanceyourprofessionalapplicationdemands.

Fromeveryinputtoeveryoutput,youcancountontheindustry-provenperformanceyouexpectfromaVLZmixer.Plus,itistrulyBuilt-Like-A-Tankwitharidiculouslyruggedsolid-steelchasisplushigh-contrastcontrolsforultimatetactilecontrol.

Andwithfeatureslikeadedicatedcontrolroom section,the1202VLZ4offersatruestepupinflexibilityandperformancethat'sidealforyourprofessional application.

How To Use This Manual

Aftertheintroduction,agettingstartedguidewillhelpyougetthingssetupfast.Thesearefollowedbyhookupdiagramswhichshowsometypicalsetups.

Nextisadetailedtouroftheentiremixer. Thedescriptionsaredividedintosections,just asyourmixerisorganizedintodistinctzones:

Patchbay

ChannelStrip

OutputSection

Throughoutthesesectionsyoullfindillustrationswitheachfeaturenumberedanddescribedinnearbyparagraphs.

Thisiconmarksinformationthatiscriticallyimportantoruniquetothemixer.Foryourowngood,readthemandrememberthem.

Thisiconwillleadyoutosomeexplanations offeaturesandpracticaltips.Theyusuallyhavesomevaluablenuggetsofinformation.

Need help with your mixer? Visit www.720trees.com and click Support to find: FAQs, manuals and other useful information.

Email us at: techmail@loudtechinc.com.

Telephone 1-800-898-3211 to speak with one of our splendid technical support chaps (Monday through Friday, normal business hours, Pacific Time).

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Getting StartedWerealizethatyoumustbereallykeentotryout

themixer.Pleasereadthesafetyinstructionsonpage2,thenhavealookthroughsomeofthefeaturesanddetailsinthismanual.

Setup

Usethemixerinanicecleananddryenvironment,freefromdryerlintanddustbunnies.

Zero the controls

1. Fullyturndownalltheknobstominimum, exceptforthechannelEQandpancontrols,whichshouldbecentered.

2. Makesureallbuttonsareintheoutposition.

Connections

1. MakesuretheACpowerswitchisoffbeforemakinganyconnections.

WARNING:BeforepluggingtheACpowercordintothemixer,makesuretheVOLTAGESELECTORswitchissettothesamevoltageasthelocalACmainssupply(seepage12).

2. PushthelinecordsecurelyintotheIECconnectorontherearpanel,andplugitintoa3-prongACoutlet.ThemixermayacceptanyACvoltagerangingfrom100VACto240VAC.

3. PlugabalancedmicrophoneintooneofthemicXLR(3-pin)connectors.Orconnectany line-levelsignal(keyboard,orguitarpreamp)toalineinputjackusingaTSoraTRS 1/4"plug.

4. Ifyourmicrophonerequiresphantompower,turnonthe48Vphantompowerbutton.

5. Allmonochannelshaveinsertjacksthatcanbeusedtoconnectanexternaleffectsordynamicsprocessorintothesignalchain.

6. Connectthemainoutputsofthemixer(eitherXLRorTRS1/4")tothelinelevelinputsofyouramplifier(withspeakersalreadyattached)ortothelinelevelinputsofpoweredspeakers.

Set the levels

Itsnotevennecessarytohearwhatyouredoingtosetoptimallevels.Butifyoudliketo:Plugheadphonesintothephonesoutputjack,thenturnupthephonesknobjustalittle.

1. Turnonthemixerbypressingthetopedgeofthepowerswitch.

2. Foronechannel,pressthesoloswitchin,andtherudesololightwillturnon.

3. Playsomethingintothatinputatreal-worldlevels.

4. Adjustthatchannel'sgaincontroluntiltherightmainmeterstaysaroundthe0dBLED(markedlevelset)andnevergoeshigherthan+7.

5. Disengagethechannel'ssoloswitch.

6. Repeatsteps2to5fortheremainingchannels.

7. TurnupthechannellevelknobtotheUmark.

8. Slowlyturnupthemainmixknobuntilyouhearthesignalsintheheadphones.

9. Ifneeded,applysomechannelEQwisely.

10.Adjustthechannellevelstogetthebestmix.Keepthegaincontrolsandlevelsfullydownonunusedchannels.

11.Duringtheperformance,ifyounoticeachannelOLLEDturningonduringpeaks,carefullyturndownthatchannel'sgaincontroluntilOLdoesnotturnon.

Things to Remember

Neverlistentoloudmusicforprolonged periods.PleaseseetheSafetyInstructionsonpage2forinformationonhearingprotection.

Alwaysturndownthephoneslevelwhenmakingconnections,pressingsolo,ordoinganythingthatmaycauseloudnessinthe headphones.Thiswillhelpprotectyourhearing.

Alwaysturndownthemainmixleveland controlroom/submixlevelswhenmaking connections tothemixer.Betteryet,turnoffthepower.

Whenshuttingdown,turnoffanypoweramplifiersorpoweredspeakersfirst.Whenpoweringup,turnthemonlast.Thiswill reducethechanceofturn-onorturn-offthumps.

Savetheshippingbox!

6 1202VLZ4

1202VLZ4

Hookup Diagrams

Condensermicrophones

DirectBoxes

MR8mk3studio monitors

Headphones

Headphone amp

Electronic Drum Kit

Stereo Guitar Effects

SynthStereo Compressor

Mono Compressor

Multi Effects Processor

Digital Delay

Laptop

Recording System

This diagram shows microphones connected to the mic inputs of channels 1 and 2, and a vocal compressor connected to the channel 1 insert jack. Bass and electric guitars are attached to channels 3 and 4 via DI boxes with a stereo compressor on the insert. The lead guitar plays through a stereo effects processor plugged into channels 5 and 6. An electronic drum kit is connected to channels 7 and 8, while a synth is connected to the line inputs of channels 9 and 10.

The audio outputs from a laptop computer are connected to the RCA tape inputs. This allows you to playback your recordings made using the DAW of your choice. The Alt 3-4 outputs are used to feed the inputs to your computer's sound card. By pressing a mute/alt 3-4 switch, it is easy to set up a channel to record onto your computer.

A headphone amplifier is connected to the headphones output, and feeds four pairs of headphones while a pair of MR8mk3 powered studio monitors are connected to the control room outputs.

You can use this setup to record overdub style:

1. For the track being recorded, route it to the alt 3-4 output, which feeds the computer input.

2. Monitor just the previously-recorded tracks through the tape input, which will feed the control room/phones.

3. Since only the currently-recorded track is feeding the computer (through alt 3-4), you will hear the previous tracks you are overdubbing to, but they will not be recorded to each new track.

4. The control room/phones is fed by a mixture of alt 3-4 (currently recorded track) and tape in (output of your DAW playing back previously-recorded tracks).

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Condensermicrophones

DirectBoxes

DLM12S subwoofers

Headphones

Electronic Drum Kit

Stereo Guitar Effects

SynthStereo Compressor

Mono Compressor

Multi Effects Processor

Mono Power Amplifier

StereoEQ

Mono EQ

DLM8 Stage Monitors

iPodTMDocking Station

DLM8 loudspeakers

Live Stereo PA System

This diagram shows microphones connected to the mic inputs of channels 1 and 2, and a vocal compressor connected to the channel 1 insert jack. Bass and electric guitars are attached to channels 3 and 4 via DI boxes with a stereo compressor on the insert. The lead guitar plays through a stereo effects processor plugged into channels 5 and 6. An electronic drum kit is connected to channels 7 and 8, while a synth is connected to the line inputs of channels 9 and 10. An iPodTM docking station is connected to the tape RCA inputs, so you can play pre-recorded music during the breaks.

A multi-effects processor is connected to aux send 1, with the aux send set to post-level. Effects are added to the main mix via the stereo return inputs, and adjusted with the stereo return level control.

To use the aux send for stage monitors instead of an effects processor, set the aux to pre-level so the monitor volume level can be adjusted independently from the main loudspeakers. This setup may easily be configured to become a mono PA setup: (A) Stereo sources should feed the left mono side of the channel input only, (B) pan each channel hard left, (C) connect the mono PA system to the left main out.

The main mix output connects to a stereo graphic EQ before connecting to a pair of DLM12S powered subwoofers which are connected to a pair of DLM8 powered loudspeakers to please your audience.

8 1202VLZ4

1202VLZ4 Patchbay Description

1

234

5

Attheriskofstatingtheobvious,thisiswhereyouplugeverythingin:microphones,line-levelinstrumentsandeffects,headphones,andtheultimatedestinationforyoursound:PAsystem,DAW,etc.

SeeAppendixBforfurtherdetailsanddrawingsoftheconnectorsyoucanusewiththe1202VLZ4.Alsoseethechannelstripdescriptiononpage13fordetailsofthesignalroutingfromtheXLRandlineinputs.

1. Mic Ins (Channels 14)ThisisafemaleXLRconnectorthatacceptsa

balancedmicorlinelevelinputfromalmostanytype ofsource.TheseOnyxmicpreampsfeaturehigher fidelityandheadroomrivalinganystandalonemic preamponthemarkettoday.Thesecircuitsareexcellentatrejectinghumandnoise.

TheXLRinputsarewiredasfollows: Pin1=Shieldorground Pin2=Positive(+orhot) Pin3=Negative(orcold)

Professionalribbon,dynamic,andcondensermicsallsoundexcellentthroughtheseinputs.Themic/lineinputswillhandleanykindoflevelyoucantossatthem,withoutoverloading.

Microphone-levelsignalsarepassedthroughthemixer'ssplendidmicrophonepreamplifierstobecomeline-levelsignals.

Noteveryinstrumentismadetoconnectdirectly toamixer.GuitarscommonlyneedaDirectInjection(DI)boxtoconnecttothemixer'smicinputs.Theseboxesconvertunbalancedline-levelsignalsfromyourguitar,intobalancedmic-leveloutputs,andprovidesignalandimpedancematching.Theyalsoletyousendyourgiftedguitarrenditionsoverlongcablesoraudiosnakes,withminimuminterferenceandhigh-frequencysignalloss.AskyourdealerorguitarmakerabouttheirrecommendationsforagoodDIbox.

Phantom PowerMostmodernprofessionalcondensermicsare

equippedforphantompower,whichletsthemixersendlow-currentDCvoltagetothemicselectronicsthroughthesamewiresthatcarryaudio.(Semi-procondensermicsoftenhavebatteriestoaccomplishthesamething.)Phantomowesitsnametoanabilitytobeunseenbydynamicmics(ShureSM57/SM58,forinstance),whichdontneedexternalpowerandarentaffectedbyitanyway.

The1202VLZ4sphantompowerisgloballycontrolledbythephantom[22]switchontherearpanel.(Thismeansthephantompowerforchannels1-4isturnedonandofftogether.)

Neverplugsingle-ended(unbalanced)microphonesorinstrumentsintothemic[1]inputjacksifthephantompowerison.

Donotpluginstrumentoutputsintothemicinputjackswithphantompoweron,unlessyouknowforcertainitissafetodoso.

2. Line Ins (Channels 14)Thesefourline-inputssharecircuitry(butnot

phantompower)withthemicpreamps,andcanbedrivenbybalancedorunbalancedsourcesatalmost anylevel.

Toconnectbalancedlinestotheseinputs,usea14"Tip-Ring-Sleeve(TRS)plug,wiredasfollows: Tip=Positive(+orhot) Ring=Negative(orcold) Sleeve=Shieldorground

Toconnectunbalancedlinestotheseinputs,usea14"mono(TS)phoneplug,wiredasfollows: Tip=Positive(+orhot) Sleeve=Shieldorground

Thelineininputs14areagoodplacetoconnectolderinstrumentsthatneedmoregain.Youcancorrectweaklevelsbyadjustingthecorrespondingchannelsgain control.

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5. Stereo Line Ins (Channels 56, 78, 910 And 1112)Thesefullybalancedinputsaredesignedforstereo

ormono,balancedorunbalancedsignals,from10dBVto+4dBu.Theycanbeusedwithjustaboutany professionalorsemi-proinstrument,effectorCDplayer.

Inthestereoaudioworld,anodd-numbered channelusuallyreceivestheleftsignal.Forexample,youwouldfeedthe1202VLZ4slineinputs5-6astereosignalbyinsertingthedevicesleftoutputpluginto thechannel5jack,anditsrightoutputplugintothechannel6jack.

Whenconnectingamonodevice(justonecord),alwaysusetheleft(mono)input(jacks5,7,9or11)andplugnothingintotherightinput(jacks6,8,10or12)thiswaythesignalwillappearonbothsides.Thistrickiscalledjacknormalling.

6. Imaginary Control Thiscontrolispurelyafigmentofourimagination.It

willcomeinhandyafterlonghoursofmixing,whenyoureallywouldlikeanicecupoftea,avacationinHawaii,oratriptotheouterreachesoftheSolarSystem.Thisisthecontrolforyou.Bethankfulyouboughta1202VLZ4.Weloveyou,man!

Effects: Serial Or Parallel?Thenexttwosectionstossthetermsserialand

parallelaroundlikehackysacks.Hereswhatwemeanbythem:

Serialmeansthattheentiresignalisroutedthroughtheeffectsdevice.Examples:compressor/limiters,graphicequalizers.Line-levelsourcescanbepatchedthroughaserialeffectsdevicebeforeorafterthemixer,orpreferablythroughtheinsertjackslocatedontherearpanel(channelinsert[17]send/return).

Parallelmeansthataportionofthesignalinthemixeristappedofftothedevice(auxsend),processedandreturnedtothemixer(stereoreturn)tobemixedwiththeoriginaldrysignal.Thisway,multiple channelscanallmakeuseofthesameeffectsdevice.Examples:reverb,digitaldelay.

Dry Signal ProcessedSignal

InsertSend

InsertReturn

Dry Signal(s) Dry Signal(s)

AuxSend

AuxReturn

Wet Signal

Channel PathMix

Stage

OutputSection

ProcessedSignal

Signal Processor(e.g., Compressor)

Signal Processor(e.g., Reverb)

Dry Signal ProcessedSignal

InsertSend

InsertReturn

Dry Signal(s) Dry Signal(s)

AuxSend

AuxReturn

Wet Signal

Channel PathMix

Stage

OutputSection

ProcessedSignal

Signal Processor(e.g., Compressor)

Signal Processor(e.g., Reverb)

3. Low Cut (Channels 14)Eachlowcutswitch,oftenreferredtoasahighpass

filter(alldependsonhowyoulookatit),cutsbass frequenciesbelow75Hzatarateof18dBperoctave.

Werecommendthatyouuselow-cutonevery microphoneapplicationexceptkickdrum,bassguitar,orbassysynthpatches.Theseaside,thereisntmuchdowntherethatyouwanttohear,andfilteringitoutmakesthelowstuffyoudowantmuchmorecrispandtasty.Notonlythat,butlow-cutcanhelpreducethe possibilityoffeedbackinlivesituations,andithelps toconserveamplifierpower.

Anotherwaytoconsiderlow-cutsfunction isthatitactuallyaddsflexibilityduringliveperformances.Withtheadditionoflow-cut,

youcansafelyuselowequalizationonvocals. Manytimes,bassshelvingEQcanreallybenefit voices.Troubleis,addinglowEQalsoboostsstagerumble,michandlingclunksandbreathpops. Applyinglow-cutremovesallthoseproblems,so youcanaddlowEQwithoutblowingyoursubwoofers.

HereswhatthecombinationoflowEQandlow-cutlookslikeintermsoffrequencycurves:

4. Gain (Channels 14) Ifyouhaventalready,pleasereadthelevel-setting

procedureonpage5.

Gainadjuststheinputsensitivityofthemicandlineinputsconnectedtochannels1through4.Thisallowssignalsfromtheoutsideworldtobeadjustedtooptimalinternaloperatinglevels.

IfthesignaloriginatesthroughtheXLRjack,therewillbe0dBofgainwiththeknobfullydown,rampingto60dBofgainfullyup.

Throughthe14"input,thereis20dBofattenuationfullydownand40dBofgainfullyup,withaU(unitygain)markat10:00.This20dBofattenuationcanbeveryhandywhenyouareinsertingaveryhotsignal,orwhenyouwanttoaddalotofEQgain,orboth.Withoutthisvirtualpad,thisscenariomightleadtochannelclipping.

Low Cut with Low EQ20Hz 100Hz 1kHz 10kHz 20kHz

15

10

5

0

+5

+10

+15

20Hz 100Hz 1kHz 10kHz 20kHz15

10

5

0

+5

+10

+15

Low Cut

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7. Stereo ReturnsThisiswheretoconnecttheoutputsofparallel

effectsdevices(orextraaudiosources).These balancedinputsaresimilartothestereolinein[2] inputs(withoutEQ,auxsends,pan,mute,andsolo).Thecircuitswillhandlestereoormono,balancedorunbalancedsignals,eitherinstrumentlevel,10dBV or+4dBu.Theycanbeusedwithjustaboutanypro orsemiproeffectsdeviceonthemarket.Thesignalscomingintotheseinputscanbeadjustedusingthestereoreturn[40]knobsbeforepassingontothe mainmixbus,seepage19.

Onedevice:ifyouhavejustoneparalleleffectsdevice(twocords),usestereoreturn1andleavestereoreturn2unplugged.thatway,theunusedstereoreturn2levelcontrolcanbeusedtofeedstereoreturn1toyourstagemonitors,viathereturntoaux1[41]switch.

Monodevice:ifyouhaveaneffectsdevicewithamonooutput(onecord),plugthatintostereoreturn1,l/mono,andleavestereoreturn1,right,unplugged. Thiswaythesignalwillbesenttobothsides,magicallyappearinginthecenterasamonosignal.Thiswontworkwithstereoreturn2youllneedaY-cord.

8. Aux Send 1&2Theauxsend[31]knobstapaportionofeach

channel'ssignaltoprovideanoutputheretofeed externalparalleleffectsprocessorsorstagemonitoring.Seetheauxsenddetailsonpage15.

These14"jacksarebalancedoutputscapable ofdelivering22dBuintoa600ohmbalancedor unbalancedload.

9. Tape InTheseRCAjacksaredesignedtoworkwithsemipro

aswellasprorecorders.Tocompensatefortypicallylowlevels,signalscominginherewillbeautomaticallyboostedby6dB.

Connectyourtaperecordersoutputshere,usingstandardhi-fi(RCA)cables.

Usethesejacksforconvenienttapeplaybackofyourmixes.Youllbeabletoreviewamixandthenrewindandtryanotherpasswithoutrepatchingordisturbingthemixerlevels.Youcanalsousethesejackswith aportableCDplayertofeedmusictoaPAsystembetweensets.

WARNING:Engagingboththetapeandassigntomainmixbuttonsinthecontrolroomsource[33]matrixcancreateafeedback

pathbetweentapeinputandtapeoutput.Makesureyourtapedeckisnotinrecord,record-pause,orinputmonitormode,whenyouengagetheseswitches,ormakesurethecontrolroom/submix[34]levelknob isfullycounterclockwise(off).

10. Tape OutTheseunbalancedRCAconnectionstapthemain

mixoutputtomakesimultaneousrecordingandPAworkmoreconvenient.Connectthesetoyourrecordersinputs.(Seealsomainmix[32]onpage16.)

Monoout:Ifyouwanttofeedamonosignaltoyourtapedeckorotherdevice,simplyuseanRCAY-cordtocombinetheseoutputs.Donotattemptthiswithanyotheroutputsonthe1202VLZ4.

11. 1/4" Main OutsThe1/4"TRSoutputconnectorsprovidebalancedor

unbalancedline-levelsignals.Connectthesetothenextdeviceinthesignalchainlikeanexternalprocessor(compressor/limiter),ordirectlytotheinputsofthemainamplifier.ThesearethesamesignalthatappearsattheXLRmainoutputs[13],but6dBlowerwhentheXLRisusedbalanced.

Toconnectbalancedlinestotheseinputs,usea14"Tip-Ring-Sleeve(TRS)plug,wiredasfollows: Tip=Positive(+orhot) Ring=Negative(orcold) Sleeve=Shieldorground

Toconnectunbalancedlinestotheseinputs,usea14"mono(TS)phoneplug,wiredasfollows: Tip=Positive(+orhot) Sleeve=Shieldorground

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Thesebalancedoutputsarecapableofdelivering22dBuintoa600ohmbalancedorunbalancedload.

16. Alt 34 OutsThese14"outputsarethesumofanychannelsthat

havethemute/alt3-4[25]switchpressedin(seepage13forthetenderdetails).

Thesebalancedoutputsarecapableofdelivering 22dBuintoabalancedorunbalancedload.

17. Channel Insert (Channels 14)Theserear-paneljacksarewhereyouconnectserial

effectssuchascompressors,equalizers,de-essers, orfilters.Sincemostpeopledonthavemorethana fewofthesegadgets,weveincludedinsertsforjust thefirstfourchannels.Ifyouwanttousethiskindofprocessingonchannels5through12,simplypatchthroughtheprocessorbeforeyoupluginto the1202VLZ4.

Thechannelinsertpointsareafterthegain[4] andlowcut[3]controls,butbeforethechannels EQ[27]andlevel[23]controls.Thesend(tip)islow-impedance(120ohms),capableofdrivinganyline-leveldevice.Thereturn(ring)ishigh-impedance(over2.5kohms)andcanbedrivenbyalmostanydevice.

SeeAppendixBfordetailsanddrawingsaboutinsertcables,andadiagramshowingthreewaystousethejacks.

Besidesbeingusedforinsertingexternaldevices,thesejackscanalsobeusedaschanneldirectoutputs;post-gain,post-lowcut,andpreEQ.Infact,ourOnyxmicpreampshavebecomesofamous,thatpeoplebuythesemixersjusttohavefouroftheseintheirarsenal.

tip

This plug connects to one of the mixers Channel Insert jacks. ring

tipring

sleeveSEND to processor

RETURN from processor

(TRS plug)

12. Headphones OutThisstereojackwilldriveanystandardheadphone

toveryloudlevels.Tolearnhowsignalsarerouted totheseoutputs,seesourcematrix[33]onpage16. Ifyourewiringyourowncableforthephonesoutput,followstandardconventions:

Tip=Leftchannel Ring = Right channel Sleeve=Commonground

WARNING:Whenwesaytheheadphone ampisloud,werenotkidding.Itcancausepermanenteardamage.Evenintermediate

levelsmaybepainfullyloudwithsomeearphones. BE CAREFUL! Alwaysturnthectlroom/submix[34]knoballthewaydownbeforeconnectingheadphones.Keepitdownuntilyouveputthephoneson.Thenturnitupslowly.Why?Engineerswhofrytheirearsfindthemselveswithshortcareers.

13. XLR Main Outs Usethesetosendthemainmixoutintotheline-level

balancedinputsofyouramplifierorpoweredspeakers.

Theselow-impedanceoutputsarefullybalancedandcapableofdriving+4dBulineswithupto28dBofheadroom.Thisoutputis6dBhotterthanotheroutputs.

14. XLR Main Out Level SwitchEngagingthisswitchreducesthelevelofthe

balancedXLRmainoutputsby40dB,soyoucan feedthemicrophoneinputof,say,anothermixer. (YoucansafelyconnecttheXLRoutputsintoan inputthatprovides48Vphantompower.)

15. Control Room OutsThese14"outputsareprovidedsoyoucanlisten

tosomethingotherthanthemainmix.Thesource isselectedusingthesourcematrix[33]switches (seepage16).Youcanchoosetolistentothemainmix,thealt3-4stereobus(seemute/alt3-4onpage13), soloedchannels,orthetapeinput.Thevolumeis adjustablewiththecontrolroom/submix[34]knob.

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1202VLZ4

18. Power ConnectionJustincaseyoulosethecordprovidedwiththe

1202VLZ4,itspowerjackacceptsastandard3-prongIECcordlikethosefoundonmostprofessional recorders,musicalinstruments,andcomputers.

WARNING:BeforepluggingtheACpowercordintothe1202VLZ4,makesurethat thevoltageselector[20]slideswitchis

settothesamevoltageasthelocalACmainssupply.

WARNING:Disconnectingtheplugsgroundpincanbedangerous.Dontdoit.

19. FuseThe1202VLZ4isfusedforyour(anditsown)

protection.Ifyoususpectablownfuse,disconnect theACmainspowercord,pullthefusedrawerout(locatedjustbelowthecordreceptacle)andreplacethefusewitha500mA(0.5amps)SLOBLO5x20mm,availableatelectronicsstoresoryourdealer.Usea 250mAfuseifthelocalvoltageis220-240VAC.

Iftwofusesblowinarow,somethingisverywrong.Pleasecallourtoll-freenumber1-800-898-3211fromwithintheU.S.(orthedistributorinyourcountry)andfindoutwhattodo.

20. Voltage SelectorWARNING:BeforepluggingtheACpowercordintothe1202VLZ4,makesurethatthevoltageselector[20]slideswitchissettothe

samevoltageasthelocalACmainssupply.Onlyslidethevoltageswitchwiththepowercordunplugged.

Useaflatheadedscrewdrivertoslidetheswitch ifneeded.Theswitchallowsyoutousethemixer indifferentcountriesandvoltages,meetinteresting peoplefromothercultures,andentertainthemwithyouruniqueblendofRockabillyFunkadeliaThrashMetal.

21. Power SwitchPressthetopofthisrockerswitchinwardstoturnon

themixer.ThepowerLEDonthetopsurfaceofthemix-erwillglowwithhappiness,oratleastitwillifyouhavethemixerpluggedintoasuitableliveACmainssupply.

Pressthebottomofthisswitchtoputthemixerintostandbymode.Itwillnotfunction,butthecircuitsare stilllive.ToremoveACpower,eitherturnofftheACmainssupply,orunplugthepowercordfromthemixerandtheACmainssupply.

Asageneralguide,youshouldturnthemixeronfirst,beforethepoweramplifierorpoweredspeakers,andturnitofflast.Thiswillreducethepossibilitiesofanyturn-on,orturn-offthumpsinyourspeakers.

22. Phantom SwitchThisglobalrockerswitchcontrolsthephantompower

supplyforcondensermicrophonespluggedintochannelmic[1]inputs(seepage8).

Pressthetopoftheswitchinwardstoengage phantompowertothefourmicinputs.Pressthe bottomoftheswitchtoturnitoff.

Whenturnedon(oroff),thephantompower circuitrytakesafewmomentsforvoltagetoramp up(ordown).Thisisperfectlynormal.Justlikeme. Oh,andmyimaginaryfriendLazlowhohelpsmewriteallthemanuals.SayhellotothenicefolksLazlo.

1819

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Channel Strip Descriptioncheckoutwhataparticularchannelisuptoanytimeduringasession.Youcansoloasmanychannelsat atimeasyoulike.

Soloisalsothekeyplayerinthelevel-setting procedureonpage5.

Soloedchannelsaresenttothesourcemix,whichultimatelyfeedsyourcontrolroom,phonesandmeterdisplay.Wheneversoloisengaged,allsourceselections(mainmix,alt3-4andtape)aredefeated,toallowthesoloedsignaltodojustthatsolo!

WARNING: Pre-fadersolotapsthe channelsignalbeforethelevelknob. Ifyouhaveachannelslevelknobsetbelow

U(unitygain),solowontknowthatandwillsend aunitygainsignaltothecontrolroom,phonesandmeterdisplay.Thatmayresultinastartlinglevelboostattheseoutputs.

25. Mute/Alt 34Thedual-purposemute/alt34busisoursignature.

WhenGregwasdesigningourfirstproduct,hehadtoincludeamuteswitchforeachchannel.Muteswitchesdojustwhattheysoundliketheydo.Theyturnoffthesignalbyroutingitintooblivion.Gee,whatawaste,Gregreasoned.Whynothavethemutebuttonroutethesignalsomewhereelseusefullikeaseparatestereobus?Somute/alt34reallyservestwofunctionsmuting(oftenusedduringamixdownorliveshow),andsignalrouting(formultitrackandlivework)whereitactsasanextrastereobus.

Tousethisasamuteswitch,allyouhavetodois notusethealt34[16]outputs.Then,wheneveryoupressthisswitch,youwillassignachanneltothese unusedoutputs,disconnectingitfromthemainmix,andeffectivelymutingthechannel.

Tousethisasanalt34switch,allyouhavetodoisconnectthealt34outputstowhateverdestinationyoudesire.Herearetwopopularexamples:

Whendoingmultitrackrecording,usethealt34outputstofeedyourmultitrack.Withmostdecks,youcan"mult"thealt34[16]outputs,usingY-cordsormults,tofeedmultipletracks.So,takealtoutputLandsendittotracks1,3,5and7,andaltoutputRandsendittotracks2,4,6and8.Now,tracksthatareinrecordorinputmodeswillhearthealt34signals,andtracksinplaybackorsafemodeswillignorethem.

Whendoinglivesoundormixdown,itsoftenhandytocontrolthelevelofseveralchannelswithoneknob.Thatscalledsubgrouping.Simplyassignthesechannelstothealt34mix,engagealt34inthesource[33]matrix,andthesignalswillappearatthecontrolroom

Theeightchannelstripslookalike,andfunction identically.Theonlydifferenceisthatthefourontheleftareforindividualmicsormonoinstrumentsandhavemoregainavailable,whilethenextfourareforeitherstereoormonoline-levelsources.(Eachofthestereochannelstripsisactuallytwocompletecircuits.Thecontrolsarelinkedtogethertopreservestereo.)Wellstartatthebottomandworkourwayup

U Like Unity GainVLZ4mixershaveaUsymbolonalmosteverylevel

control.ThisUstandsforunitygain,meaningnochangeinsignallevel.Onceyouhaveadjustedtheinputsignaltoline-level,youcanseteverycontrolatUandyoursignalswilltravelthroughthemixeratoptimal levels.Whatsmore,allthelabelsonourlevelcontrolsaremeasuredindecibels(dB),soyoullknowwhatyouredoinglevel-wiseifyouchoosetochangea controlssettings.

Youwonthavetocheckit hereandcheckitthere,asyouwouldwithsomeothermixers.Infact,somedontevenhaveanyreferencetoactualdBlevels atall!Youweresmartyou'reusinga1202VLZ4.

23. LevelThisadjuststhechannels

levelfromoff,tounitygain atthedetent,onupto12dB ofadditionalgain.

Thelevelknobisthe equivalentofachannelfader, sosometimeswelapseandsaythewordfader.

Channels1through4usemonocontrols,andchannels5through12usestereocontrols,andsotheymayfeelslightlydifferent.Notaproblem.

24. Pre-Fader SoloThislovableswitchallows

youtohearsignalsthrough yourheadphonesorcontrol roomwithouthavingtoroutethemtothemainmixoralt3-4mix.Youdontevenhavetohavethechannelslevel[23]knob

turnedup.Folksusesoloinliveworktopreview channelsbeforetheyareletintothemix,ortojust

23

24

25

14 1202VLZ4

1202VLZ4 [15]andphones[12]outputs.Ifyouwantthealt34

signalstogobackintothemainmix,engagetheassigntomainmix[36]switch,andthecontrolroom/submix[34]levelcontrolbecomestheoneknobtocontrolthelevelsofallthechannelsassignedtoalt34.

Anotherwaytodothesamethingisassignthe channelstothealt34mix,thenpatchoutofthe alt34output[16]backintoanunusedstereochannellineinput[2].Ifthatsyourchoice,donteverengagethemute/alt34switchonthatstereochannel,oryoullhaveeverydogintheneighborhoodhowlingatyourfeedbackloop.

Anotherbenefitofthealt34featureisthatitcanactasaSIP(Solo-In-Place):justengageachannel'smute/alt34switchandthealt34switchinthesourcematrixandyoullgetthatchannel,allbyitself,inthecontrolroomandphones.

Mute/alt34isoneofthosecontrolsthatcan bewildernewcomers,sotakeyourtimeandplay aroundwithit.Onceyouvegotitdown,youll probablythinkofahundredusesforit!

26. PanPanadjuststheamountof

channelsignalsenttotheleftversustherightoutputs.Onmonochannels(ch.14or512withconnectionstotheLinputonly)thesecontrolsactaspanpots.Onstereochannels(512)withstereoconnectionstoLandRinputs,thepanknobworkslikethebalancecontrolonyourhomestereo.

Pandeterminesthefateof themainmixandalt34mix.Withthepanknobhardleft, thesignalwillfeedeithermainoutL(bus1)oraltoutputL (bus3),dependingonthe positionofthealt34switch.Withtheknobhardright,thesignalfeedsmainoutR(bus2)oraltoutputR(bus4).

26

27

29

28

30

31

Constant Loudness ! ! !The1202VLZ4spancontrolsemployadesigncalled

ConstantLoudness.Ithasnothingtodowithlivingnexttoanall-nightdisco.Asyouturnthepan[26]knobfromlefttoright(therebycausingthesoundtomovefromthelefttothecentertotheright),thesoundwillappeartoremainatthesamevolume(orloudness).

Ifyouhaveachannelpannedhardleft(orright)andreading0dB,itmustdipdownabout4dBontheleft(orright)whenpannedcenter.Todootherwise(thewayBrandXcompactmixersdo)wouldmakethesoundappearmuchlouderwhenpannedcenter.

3-Band EQThe1202VLZ4has3-bandequalizationatcarefully

selectedpointslowshelvingat80Hz,midpeakingat2.5kHz,andhishelvingat12kHz.Shelvingmeansthatthecircuitryboostsorcutsallfrequenciespastthespecifiedfrequency.Forexample,rotatingthelowEQknob15dBtotherightboostsbassstartingat80Hzandcontinuingdowntothelowestnoteyouneverheard.Peakingmeansthatcertainfrequenciesformahillaroundthecenterfrequency2.5kHzinthecaseofthemidEQ.

27. Low EQThiscontrolgivesyou

upto15dBboostorcutbelow80Hz.Thecircuitisflat(noboostorcut)atthecenterdetentposition.Thisfrequencyrepresentsthepunchinbassdrums,bassguitar,fatsynthpatches,andsomereallyseriousmalesingers.

Usedinconjunctionwiththelowcut[3]switch,youcanboostthelowEQwithoutinjectingatonofsubsonicdebrisintothemix.

28. Mid EQShortformidrange,

thisknobprovides15dB ofboostorcut,centered at2.5kHz,alsoflatatthecenterdetent.MidrangeEQisoftenthoughtofasthemostdynamic,becausethefrequenciesthatdefineanyparticularsoundarealmostalwaysfoundinthisrange.YoucancreatemanyinterestingandusefulEQchangesbyturningthisknobdownaswellasup.

20Hz 100Hz 1kHz 10kHz 20kHz15

10

5

0

+5

+10

+15

20Hz 100Hz 1kHz 10kHz 20kHz15

10

5

0

+5

+10

+15

Low EQ with Low Cut

Low EQ

20Hz 100Hz 1kHz 10kHz 20kHz15

10

5

0

+5

+10

+15

Mid EQ

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29. Hi EQThiscontrolgivesyouup

to15dBboostorcutabove12kHz,anditisalsoflat at the detent. Use it to addsizzletocymbals, andanoverallsenseoftransparency,oredgetokeyboards,vocals,guitarandbaconfrying.Turnitdownalittletoreducesibilance,ortohidetapehiss.

Moderation During EQWithEQ,youcanalsoscrewthingsuproyally.

Wevedesignedalotofboostandcutintoeach equalizercircuit,becauseweknoweveryonewill occasionallyneedthat.ButifyoumaxtheEQson everychannel,youllgetmixmush.Equalizesubtly andusetheleftsidesoftheknobs(cut),aswellas theright(boost).Veryfewgold-record-albumengineerseverusemorethanabout3dBofEQ.Ifyouneedmorethanthat,theresusuallyabetterwaytogetit,suchasplacingamicdifferently(orusingadifferentkindofmicentirely).

30. Aux 2 Send 31. Aux 1 SendTheseknobsallowyoutotapaportionofeach

channelsignalouttoanothersourceforparallel effectsprocessingorstagemonitoring.Auxsend levelsarecontrolledbytheseknobsandbythe aux1master[39].

Thesearemorethanjusteffectsandmonitorsends.Theycanbeusedtogenerateseparatemixesfor recordingormix-minusesforbroadcast.Byusing aux1inthepremode,thesemixlevelscanbeobtainedindependentlyofthechannelslevelcontrol.

Aux1inpostmodeandaux2arepost-lowcut, post-EQandpost-level.Thatis,thesendsobeythe settingsofthesecontrols.Aux1inpremodefollows theEQandlowcutsettingsonly.Panandlevelhave noeffectonthepresend(seediagrambelow).

20Hz 100Hz 1kHz 10kHz 20kHz15

10

5

0

+5

+10

+15

High EQ

GAIN INSERTLO CUT EQ

LEVEL PAN MAIN / ALT

AUX 2 KNOB

"POST" SIGNAL

"PRE" SIGNAL

AUX 1 KNOB

"POST" SIGNAL OBEYSMUTE STATUS

INPUT

AUX SEND 1 PRE/POST SWITCH(IN MASTER SECTION)

TO AUX SEND 2 LEVEL

TO AUX SEND 1 LEVEL

Eachauxsendlevelrangesfromoffthroughunity(thecenterdetentposition)onupto15dBofextragain(whenturnedfullyclockwise).Chancesareyoullneverneedthisextragain,butitsnicetoknowitsthereifyoudo.

Channel512auxknobscontrolthemonosumofthechannelsstereosignalsforeachauxsend.Forinstance,channel5(L)and6(R)mixtogethertofeedthat channelsauxsendknobs.

Werecommendgoingintoastereoreverbinmonoandreturninginstereo.Wehavefoundthatonmoststereoreverbsthesecondinputjusttiesupanextraauxsendandaddsnothingtothesound.Thereareexceptions,sofeelfreetotryitbothways.Ifyoureffectsdeviceistruestereoallthewaythrough,useaux1tofeeditsleftinputandaux2tofeedtherightinput.

Stillwithus?Goodforyou.Herecomethetrickyparts,theoutputormastersectionwherethemixingisreallydone.Wehaveevenstarteditonanewpage:

Pre vs. Post

Signal Flow Diagram

16 1202VLZ4

1202VLZ4 Output Section

32

33

34

3536

37

33. Control Room Source MatrixTypically,theengineersendsthemainmixtoan

audience(iflive)oramixdowndeck(ifrecording).Butwhatiftheengineerinthecontrolroomneedstohearsomethingotherthanthemainmix?Withthe1202VLZ4,theengineerhasseveralchoicesofwhattolistento.Thisisoneofthosetrickyparts,sobraceyourself.

Viathesesourceswitches,youcanchoosetolisten toanycombinationofmainmix,alt3-4andtape. Bynow,youprobablyknowwhatthemainmixis. Alt3-4isthatadditionalstereomixbus.Tapeisthestereosignalcominginfromthetapeinput[9]jacks.

Selectionsmadeinthesourcematrixdeliverstereosignalstothecontrolroom,phonesandmeterdisplay.Withnoswitchesengaged,therewillbenosignalattheseoutputsandnometerindication.

Theexceptionisthesolofunction.Regardlessofthesourceselection,engagingachannelssolo[24]switchwillreplacethatselectionwiththesolosignal,alsosenttothecontrolroom,phonesandrightmeter(theleftmeterbecomesinactive).Thisiswhatmakesthelevel-settingproceduresoeasytodo.

WARNING:Engagingboththetapeand assigntomainmix[36]buttonscancreateafeedbackpathbetweentapeinput[9]and

tapeoutput[10].Makesureyourtapedeckisnotinrecord,record-pause,orinput-monitormodewhenyouengagetheseswitches,ormakesurethecontrolroom/submix[34]levelknobisfullycounterclockwise(off).

Nowyouknowhowtoselectthesignalstosendtotheengineerscontrolroomorphones.Fromthere,thesesignalsallpassthroughthesamelevelcontrol:

34. Control Room/SubmixThisknobcontrolsthelevelsofboththestereo

controlroom[15]andphones[12]outputs.Thecontrolrangeisfromoffthroughunitygainatthedetent,with10dBofextragain(whenturnedfullyclockwise).

Whenmainmixisyourcontrolroomsourceselection,thosesignalswillnowpassthroughtwolevelcontrolsonthewaytoyourcontrolroomampandphonesthemainmix[32]knobandthiscontrolroom/submixknob.Thisway,youcansendanicehealthyleveltothemainoutput(mainmixknobatU),andaquietleveltothecontrolroomorphones(controlroom/submixknobwhereveryoulikeit).

Whenalt3-4ortapeisselected,orsolo[24]is engaged,thecontrolroom/submixknobwillbetheonlyonecontrollingtheselevels(channelcontrols notwithstanding).

32. Main MixThisknobcontrolsthelevelsofsignalssenttothe

mainoutputs:XLR[13]and14"[11]andRCAtapeoutput[10].Allchannelsandstereoreturns[7]thatarenotmutedorturnedfullydownwillwindupinthemainmix.

Fullycounterclockwiseisoff,thecenterdetent isunitygain,andfullyclockwiseprovides12dBof additionalgain.Thisadditionalgainwilltypicallyneverbeneeded,butonceagain,itsnicetoknowitsthere.ThisistheknobtoturndownattheendofthesongwhenyouwantTheGreatFade-Out.

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Whateveryourselection,youcanalsousethecontrolroom[15]outputsforotherapplications.Itssoundqualityisjustasimpeccableasthemainouts[11and13].Itcanbeusedasadditionalmainmixoutput,whichmaysoundsillysincetherearealreadythree,butthisonehasitsownlevelcontrol.However,shouldyoudosomethinglikethis,besurethatyoudonotengageasoloswitch,asthatwillinterruptyoursourceselection.

A Word About Pre-Fader Solo (PFL) Engagingachannelssolo[24]switchwillcause

thisdramaticturnofevents:Anyexistingcontrolroomsourceselectionswillbereplacedbythesolosignal,appearinginthecontrolroom,headphones,andintherightmeter.Theaudiblesololevelsarethencontrolledbythecontrolroom/submix[34]knob.Thesololevelsappearingontherightmeterdisplayarenotcontrolledbyanythingyouwouldntwantthat.Youwanttoseetheactualchannellevelonthemeterdisplayregardlessofhowloudyourelistening.

Pre-fadersolomeansthatthechannelsignalis beingtappedbeforethechannelslevel[23]knob (notreallyafaderinthiscase,butwewereafraid youdlaughifwecalleditpre-knobsolo).Itdoes, however,obeygain[4],lowcut[3]andEQ[27] settings,makingittheperfecttoolforquickinspectionsofsuspectchannels.Thechannelspan[26]andmute/alt3-4[25]settingshavenoeffectonthesolosignal.

Note:Forstereochannels5-12,thesolosignalis themonosumoftheleft(odd-numbered)andright(even-numbered)signalsforthatchannelstrip.

WARNING:Pre-fadersolo[24]taps thechannelsignalbeforethelevelknob. Ifyouhaveachannelslevelknobsetbelow

U(unitygain),solowontknowthat,andwillsend aunitygainsignaltothecontrolroom,phonesandmeterdisplay,thatmayresultinastartlinglevelboostattheseoutputs.

35. Rude Solo LightThisflashingLightEmittingDiodeservestwo

purposestoremindyouthatatleastonechannel isinsolo,andtoletyouknowthatyouremixingon a1202VLZ4.Noothercompanyissoconcernedaboutyourlevelofsoloawareness.Ifyouworkonamixer thathasasolofunctionwithnoindicatorlights,and youhappentoforgetyoureinsolo,youcaneasilybetrickedintothinkingthatsomethingiswrongwithyourmixer.Hencetherudesololight.Itsespeciallyhandy atabout3a.m.whennosoundiscomingoutofyourmonitorsbutyourmultitrackisplayingbacklikemad.

36. Assign To Main MixLetssayyouredoingaliveshow.Intermissionis

nearingandyoullwanttoplayasoothingCDforthecrowdtopreventthemfromeatingthefurniture. Thenyouthink,ButIhavetheCDplayerpluggedintothetapeinputs,andthatnevergetstothemainouts!Oh,butitdoes.Simplyengagethisswitchandyour controlroomsourceselection,aftergoingthrough thecontrolroom/submix[34]knob,willfeedinto themainmix,justasifitwereanotherstereochannel.

Anotherhandyuseforthisswitchistoenablethe alt3-4mixtobecomeasubmixofthemainmix,usingthecontrolroom/submixknobasitslevelcontrol.

Sideeffects:(1)Engagingthisswitchwillalsofeedanysoloedchannelsintothemainmix,whichmaybethelastthingyouwant.(2)Ifyouhavemainmixasyourcontrolroomsourceselectionandthenengage assigntomainmix,themainmixlinestothecontrolroomwillbeinterruptedtopreventfeedback.Thenagain,whywouldanyonewanttoassignthemainmix tothemainmix?

37. Meters Many Displays In One!The1202VLZ4speakmeteringsystemismadeup

oftwocolumnsoftwelveLEDs.Deceptivelysimple,consideringthemultitudeofsignalsthatcanbe monitoredbyit.

Ifnothingisselectedinthesourcematrixand nochannelsareinsolo,themeterswilljustsitthereanddonothing.Toputthemtowork,youmustmakeaselectioninthesourcematrix(orengageasoloswitch).

Why?Youwantthemeterdisplaytoreflectwhattheengineerislisteningto,andaswevecovered,the engineerislisteningeithertothecontrolroom[15]outputsorthephones[12]outputs.Theonlydifferenceisthatwhilethelisteninglevelsarecontrolledbythecontrolroom/submix[34]knob,themetersreadthesourcemixbeforethatcontrol,givingyoutherealfactsatalltimes,evenifyourenotlisteningatall.

Thankstothe1202VLZ4swidedynamicrange, youcangetagoodmixwithpeaksflashinganywherebetween20and+10dBonthemeters.Most amplifiersclipatabout+10dB,andsomerecordersarentsoforgivingeither.Forbestreal-worldresults, trytokeepyourpeaksbetween0and+7.

Youmayalreadybeanexpertattheworldof+4(+4dBu=1.23V)and10(10dBV=0.32V)operatinglevels.Basically,whatmakesamixeroneortheotheristherelative0dBVU(or0VU)chosenforthemeters.A+4mixer,witha+4dBusignalpouringoutthebackwillactuallyread0VUonitsmeters.A10mixer,witha10dBVsignaltricklingout,willread0VUonitsmeters.Sowhenis0VUactually0dBu?Rightnow!

18 1202VLZ4

1202VLZ4 Attheriskofcreatinganotherstandard,1202VLZ4

mixersaddresstheneedofbothcrowdsbycallingthingsastheyare0dBu(0.775V)attheoutputshowsas 0dBVUonthemeters.Whatcouldbeeasier?Bytheway,themostwonderfulthingaboutstandardsisthattherearesomanytochoosefrom.

Remember,audiometersarejusttoolstohelpassureyouthatyourlevelsareintheballpark.Youdonthavetostareatthem(unlessyouwantto).

A Word About AuxFirstofall,thereisnoparticularalliancebetween

auxsend1(or2)andstereoreturn1(or2).Theyrejustnumbers.Theyreliketwocompletestrangers.

Sendsareoutputs,returnsareinputs.Thechannelaux[30and31]knobstapthesignaloffthechannelandsendsittotheauxsend[8]outputs.Aux1signalissenttotheaux1master[39]knobbeforegoingtotheauxsend1[8]outputandtheaux2signalgoesdirectlytotheauxsend2[8]output.

38

3941 40

Theseoutputscanbefedtotheinputsofareverborotherdevice.Fromthere,theoutputsofthisexternaldevicearefedbacktothemixersstereoreturn[7]jacks.thenthesesignalsaresentthroughthestereoreturn[40]levelcontrols,andfinallydeliveredtothemainmix.

So,theoriginaldrysignalsgofromthechannelstothemainmixandtheaffectedwetsignalsgofromthestereoreturn[7]tothemainmix,andoncemixedtogether,thedryandwetsignalscombinetocreate aglorioussound.So,armedwiththisknowledge, letsvisittheAuxiliaryWorld:

38. Pre Or Post (Aux 1) Besidesbeingusedtoworkeffectsintoyourmix,aux

sendsserveanothercriticalrolethatofdeliveringcuemixestostagemonitors,somusicianscanhearwhattheyredoing.Onthe1202VLZ4,auxsend1canplayeitherrole,dependingonthepositionofthisswitch.

Withthisswitchup(disengaged),auxsend1will tapachannelpre-fader(level)andpre-mute/alt3-4,meaningthatnomatterhowyoumanipulatethosecontrolsastheyfeedthemainmix,theauxsendwillcontinuetobeltoutthatchannelssignal.Thisisthepreferredmethodforsettingupstagemonitorfeeds. EQsettingswillaffectallauxsends.

Withtheswitchdown,theauxsend1becomes anordinaryeffectssendpost-fader(level)and post-mute/alt3-4.Thisisamustforeffectssends, sinceyouwantthelevelsofyourwetsignalsto followthelevelofthedry.

39. Aux 1 MasterThisknobprovidesoveralllevelcontrolofauxsend1,

justbeforeitsdeliveredtotheauxsend1[8]output.(Auxsend2hasnosuchcontrol.)Thisknobgoesfromoff(turnedfullydown),tounitygainatthecenterdetent,with10dBofextragain(turnedfullyup). Aswithsomeotherlevelcontrols,youmayneverneedtheadditionalgain,butifyoueverdo,youllbegladyouboughta1202VLZ4.

Thisisusuallytheknobyouturnupwhentheleadsingerglaresatyou,pointsathisstagemonitor,andstickshisthumbupintheair.(Itwouldfollowsuitthatifthesingerstuckhisthumbdown,youdturntheknobdownbutthatneverhappens.)

40. Stereo ReturnsThesetwocontrolssettheoveralllevelofeffects

receivedfromstereoreturn[7]inputs1and2.Thesecontrolsaredesignedtohandleawiderangeofsignallevels,fromoff,tounitygainatthedetent,with20dBgainfullyclockwise,tocompensateforlow-leveleffects.

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Typically,theseknobscanjustliveatthecenterdetent,andtheeffectsdevicesoutputcontrolshouldbesetatwhatevertheycallunitygain(checktheirmanual).Ifthatturnsouttobetooloudortooquiet,adjusttheeffectsdevicesoutputs,notthemixer. Thatway,themixersknobsareeasytorelocate at the center detent.

Signalspassingthroughthesecontrolswillproceeddirectlytomainmix,withoneexception(seeparagraphbelow).Thestereoreturnsdonothavemute/alt3-4switches,soifyouwantthesesignalstogettothealt3-4mix,youllhavetopatchtheeffectsdevicesoutputsintooneofthestereochannels,andmute/altthosechannels.

41. Return To Aux 1Ifyouwanttoaddreverbordelaytothestagemonitor

mixesofaux1,thisistheswitchforyou.

Withtheswitchup,stereoreturn1and2behave normallytheydelivertheirsignalsintothemain mix.Withtheswitchdown,stereoreturn1stillbehavesnormally,butstereoreturn2willfeedauxsend1 insteadofthemainmix.

Stillwithus?Good.Sofar,withtheswitchdown,wehavestereoreturn1feedingthemainmixandstereoreturn2feedingauxsend1.Now,supposeyouonlyhaveoneeffectsdevice,andyouwantittofeedboththemainmixandauxsend1.Thatswherejacknormallingcomesin:

Jack NormallingJacknormalling(nottobeconfusedwithJack

Normalling,ChicagoCubsutilityinfielder,1952-61, .267LBA)isafeaturefoundonalmosteverymixer,keyboardandeffectsdevice.Thesejackshavespecialspring-loadedpinsthatconnecttothesignalpins,butwhensomethingispluggedintothejack,thatconnectionisbroken.

Thesenormallingpinscanbeusedinallsortsof ways.Theubiquitousphraseleft(mono)meansthat ifyouplugasignalintotheleftsideandhavenothing intherightside,thatsignalisalsofedtotherightinput,courtesyofjacknormalling.Assoonasyouplugsomethingintherightside,thatnormalledconnectionisbroken.

Howdoesallthisrelatetothereturntoaux1[41]switch?Stereoreturn1sinputsarenormalledtostereoreturn2.Ifyouhaveoneeffectsdevice,plugitintostereoreturn1.Plugnothingintostereoreturn2.Nowthesignalsfeedingthestereoreturn1inputswillalsobesenttothestereoreturn2inputs.

Engagethereturntoaux1switch,andnowthestereoreturn2knobwillbecomeanadditionalauxsend1knobforthesignalatauxreturn1.Saythattentimesfast!Onceagain,auxreturn1willbehavenormally,asalways.

Congratulations!Youvejustreadaboutallthe featuresofyour1202VLZ4.Youreprobablyreadyfor acoldone.Goahead.Therestofthemanualcanwait.

20 1202VLZ4

1202VLZ4 Appendix A: Service Information

Ifyouthinkyour1202VLZ4hasaproblem,pleasecheckoutthefollowingtroubleshootingtipsanddo yourbesttoconfirmtheproblem.VisittheSupport sectionofourwebsite(www.720trees.com)where youwillfindlotsofusefulinformationsuchasFAQs andotherdocumentation.Youmayfindtheanswer totheproblemwithouthavingtosendyourmixeraway.

TroubleshootingBad Channel

Isthemute/alt34switchinthecorrect position?

Isthelevelknobturnedup?

Tryunplugginganyinsertdevices(channels14only).

Trythesamesourcesignalinanotherchannel,setupexactlylikethesuspectchannel.

Bad Output

Istheassociatedlevelknob(ifany)turnedup?

Ifitsoneofthemainouts,tryunpluggingalltheothers.Forexample,ifitsthe14"leftmainout,unplugtheRCAandXLRLeftoutputs.Iftheproblemgoesaway,itsnotthemixer.

Ifitsastereopair,tryswitchingthemaround.Forexample,ifaleftoutputispresumeddead,switchtheleftandrightcords,atthemixerend.Iftheproblemswitchessides,itsnotthemixer.

Noise

Turnthechannellevelandauxreturnknobsdown,onebyone.Ifthesounddisappears,itseitherthatchannelorwhateverispluggedintoit,sounplugwhateverthatis.Ifthenoisedisappears,itsfromyourwhatever.

Power

Unplugthepowercordandcheckthefuse.

RepairForwarrantyservice,refertothewarranty

informationonpage27.

Non-warrantyserviceisavailableatafactory- authorizedservicecenter.Tolocatethenearest servicecenter,visitwww.720trees.com,clickContactTechSupportandselectLocateaServiceCenter orDistributor[3].Servicefora1202VLZ4living outsidetheUnitedStatesmaybeobtainedthrough localdealersordistributors.

Ifyoudonothaveaccesstoourwebsite,youcan callourTechSupportdepartmentat1-800-898-3211, Monday-Friday,duringnormalbusinesshours,PacificTime,toexplaintheproblem.TechSupportwilltell youwherethenearestfactory-authorizedservice centerislocatedinyourarea.

Appendix B: ConnectionsBalanced XLR Input Connector

The1202VLZ4mixerhasfourfemaleXLR inputs.BesurethecablesarewiredperAES (AudioEngineeringSociety)standards:

Balanced XLR Input Connector

Pin1Shield(Ground) Pin2Positive(+orhot) Pin3Negative(orcold)

2

3 1

SHIELD

COLD

HOT

SHIELD

COLD

HOT

3

2

1

Balanced XLR Input Connector

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Balanced XLR Output Connector

ThemaleXLRconnectorsprovideabalancedline- levelsignalthatrepresentstheendofthemixer,wherethefullymixedstereosignalenterstherealworld. Connectthesetotheleftandrightline-levelinputsofpoweredspeakersortotheleftandrightline-levelinputsofanamplifier(withspeakersalreadyattached).BesurethecablesarewiredperAES(Audio EngineeringSociety)standards:

Balanced XLR Output Connector

Pin1Shield(Ground) Pin2Positive(+orhot) Pin3Negative(orcold)

Balanced 1/4" TRS Connector

TRSstandsforTip-Ring-Sleeve,thethreeconnectionsavailableonastereo1/4"cable.Thisallowsforadirectconnectiontothechannelinputjacks.BesurethecablesarewiredperAES(AudioEngineeringSociety)standards:

Balanced 1/4" TRS Connector

SleeveShield(Ground) TipPositive(+orhot) RingNegative(orcold)

TRSjacksandplugsareusedinseveraldifferent applications:

Balancedmonocircuits.Whenwiredasa balancedconnector,a14"TRSjackorplug isconnectedtiptosignalhigh(hot),ringtosignallow(cold),andsleevetoground(earth).

StereoHeadphones,andrarely,stereo microphonesandstereolineconnections. Whenwiredforstereo,a14"TRSjackorplugisconnectedtiptoleft,ringtorightandsleevetoground(earth).VLZ4mixersdonotdirectly

2

1

SHIELD

COLD

HOT

3

SHIELD

COLDHOT

3

2

1

Balanced XLR Output Connector

SLEEVE

TIPSLEEVE

TIP

RING

RING

TIP

SLEEVERING

Balanced 1/4" TRS Connector

accept1-plug-typestereomicrophones.Theymustbeseparatedintoaleftcordandarightcord,whicharepluggedintothetwomic preamps.

Youcancookupyourownadapterforastereomicrophone.Ytwocablesoutofafemale14"TRSjacktotwomaleXLRplugs,onefortherightsignalandonefortheleft.

Unbalancedsend/returncircuits.Whenwiredasasend/returnYconnector,a14"TRSjackorplugisconnectedtiptosignalsend(outputfrommixer),ringtosignalreturn(inputbackintomixer),andsleevetoground(earth).

Unbalanced 1/4" TS Connector

TSstandsforTip-Sleeve,thetwoconnections availableonamono14"cable.Thisallowsforadirectconectiontothechannelinputjacks.BesurethecablesarewiredperAES(AudioEngineeringSociety) standards:

Unbalanced 1/4" TS Connector

SleeveShield(Ground) TipPositive(+orhot)

TSjacksandplugsareusedinmanydifferentapplications,alwaysunbalanced.Thetipisconnected totheaudiosignalandthesleevetoground(earth).Someexamples:

Unbalancedmicrophones

Electricguitarsandelectronicinstruments

Unbalancedline-levelconnections

Switched 1/4" Phone Jacks

Switchescanbeincorporatedinto14"phonejacks,whichareactivatedbyinsertingtheplug.Theseswitchesmayopenaninsertloopinacircuit,changetheinputroutingofthesignalorserveotherfunctions.The1202VLZ4usesswitchesinthechannelinsertandbusinsertjacks,inputjacksandstereoreturns.Italsousestheseswitchestogroundtheline-levelinputswhennothingispluggedintothem.

Inmostcases,theplugmustbeinsertedfullytoactivatetheswitch.The1202VLZ4takesadvantageofthisinsomecircuits,specifyingcircumstanceswhereyouaretoinserttheplugonlypartially.SeeSpecialConnections,onthenextpage.

SLEEVE

TIP

TIPSLEEVE

TIP

SLEEVE

Unbalanced 1/4" TS Connector

22 1202VLZ4

1202VLZ4 Unbalanced RCA Connector

RCA-typeplugs(alsoknownasphonoplugs) andjacksareoftenusedinhomestereoandvideoequipmentandinmanyotherapplications.RCAplugsareunbalanced.Connectthesignaltothecenterpostandtheground(earth)orshieldtothesurroundingbasket.BesurethecablesarewiredperAES(AudioEngineeringSociety)standards:

Unbalanced RCA Connector

SleeveShield(Ground) TipPositive(+orhot)

Unbalancing a LineInmoststudio,stageandsoundreinforcementsitu-

ations,thereisacombinationofbalancedandunbal-ancedinputsandoutputsonthevariouspiecesofequipment.Thisusuallywillnotbeaprobleminmakingconnections.

Whenconnectingabalancedoutputtoanunbalancedinput,besurethesignalhigh(hot)connectionsarewiredtoeachother,andthatthebalancedsignallow(cold)goestotheground(earth)connectionattheunbalancedinput.Inmostcases,thebalancedground(earth)willalsobeconnectedtotheground(earth)attheunbalancedinput.Ifthereareground-loopproblems,thisconnectionmaybeleftdisconnectedatthebalancedend.

Whenconnectinganunbalancedoutputtoabalancedinput,besurethatthesignalhigh(hot)connectionsarewiredtoeachother.Theunbalancedground(earth)connectionshouldbewiredtothelow(cold)andtheground(earth)connectionsofthebalancedinput.Ifthereareground-loopproblems,tryconnectingtheunbalancedground(earth)connectiononlytotheinputlow(cold)connection,andleavingtheinputground(earth)connectiondiscon-nected.

Insomecases,youwillhavetomakeupspecialadapterstointerconnectyourequipment.Forexample,youmayneedabalancedXLRfemaleconnectedtoanunbalanced14"TSphoneplug.

TIPSLEEVETIPSLEEVE

Unbalanced RCA Connector

TRS Send/Receive Insert Jacks

Single-jackinsertsarethree-conductor,TRS-type14"phone.Theyareunbalanced,buthaveboththemixeroutput(send)andthemixerinput(return)signalsinoneconnector.Seetheillsutrationbelow.

Thesleeveisthecommonground(earth)forbothsignals.Thesendfromthemixertotheexternalunitiscarriedonthetip,andthereturnfromtheunittothemixerisonthering.

Special ConnectionsThebalanced-to-unbalancedconnectionhasbeenan-

ticipatedinthewiringof1202VLZ4jacks.A14"TSpluginsertedintoa14"TRSbalancedinput,forexample,willautomaticallyunbalancetheinputandmakealltherightconnections.Conversely,a14"TRSpluginsertedintoa14"unbalancedinputwillautomaticallytiethering(loworcold)toground(earth).

Using the Send Only on an Insert Jack

IfyouinsertaTS(mono)14"plugonlypartially(tothefirstclick)intoaVLZ4insertjack,theplugwillnotactivatethejackswitchandwillnotopentheinsertloopinthecircuit(therebyallowingthechannelsignaltocontinueonitsmerrywaythroughthemixer).

Thisallowsyoutotapoutthechannelorbussignalwithoutinterruptingnormaloperation.

Ifyoupushthe14"TSplugintothesecondclick,youwillopenthejackswitchandcreateadirectout,whichdoesinterruptthesignalinthatchannel.Seetheillustrationonthenextpage.

Unbalanced 1/4" Insert Connectors

tip

This plug connects to one of the mixers Channel Insert jacks. ring

tipring

sleeveSEND to processor

RETURN from processor

(TRS plug)

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NOTE:Donotoverloadorshort-circuitthesignalyouaretappingfromthemixer.Thatwillaffecttheinternalsignal.

Direct out with no signal interruption to master.Insert only to first click.

Channel Insert jack

Channel Insert jack

Channel Insert jack

Direct out with signal interruption to master.Insert all the way in to the second click.

For use as an effects loop.(Tip = Send TO effect, Ring = Return FROM effect).

MONO PLUG

MONO PLUG

STEREO PLUG

Using the Send Only on an Insert Jack

Y-cord splitter cable

VLZ4 Stereo Inputs and Returns: Mono, Stereo, Whatever

Stereolineinputsandstereoreturnsareafine exampleofourphilosophy(whichwejustmadeup) ofMaximumFlexibilitywithMinimumHeadache. Theinputsandreturnswillautomaticallybemono orstereo,dependinguponhowyouusethejacks. Hereshowitworks:

Amonosignalshouldbepatchedintotheinput orreturnjacklabeledleft(mono).Thesignalwill beroutedtoboththeleftandrightsidesofthereturncircuit,andwillshowupinthecenterofthestereopairofbusesitsassignedto,oritcanbepannedwiththepan[26]control.

Astereosignal,havingtwoplugs,shouldbepatchedintotheleft(mono)andtherightinputorreturnjacks.Ajackswitchintherightjackwilldisablethemonofunction,andthesignalswillshowupinstereo.

Amonosignalconnectedtotherightjackwillshowupintherightbusonly.Youprobablywillonlywanttousethissophisticatedeffectforspecialoccasions.

Mults and Ys

AmultorYconnectorallowsyoutorouteoneoutputtotwoormoreinputsbysimplyprovidingparallel wiringconnections.YoucanmakeYsandmultsfor theoutputsofbothunbalancedandbalancedcircuits.

Remember:OnlymultorYoneoutputintoseveralinputs.Ifyouneedtocombineseveraloutputsintooneinput,youmustuseamixer,

notamultoraY.

TIP (SEND)

RING (IN)

TIP (OUT)RING (RETURN)

TO MIXERCHANNEL INSERT

RING (RETURN)

TIP (SEND)

TO PROCESSOR

INPUT

FROM PROCESSOR

OUTPUT

Y-cord insert cable

24 1202VLZ4

1202VLZ4

Appendix C: Technical InformationSpecificationsMain Mix Noise(20 Hz20 kHz bandwidth, 1/4" Main out, channels 14 Trim @ unity gain, channel EQs flat, all channels assigned to Main Mix, channels 1 and 3 Pan left, 2 and 4 Pan right.)

Main Mix knob down, channel Gain knobs down: 100 dBu

Main Mix knob unity, channel Gain knobs down: 86.5 dBu

(90 dB Signal to Noise Ratio, ref +4 dBu)

Main Mix knob @ unity, channel Gain knobs @ unity: 84.5 dBu

Total Harmonic Distortion (THD)(1 kHz @ 30 dB gain, 20 Hz20 kHz bandwidth)

Mic pre @ insert: 0.0007%

Attenuation (Crosstalk)(1 kHz relative to 0 dBu, 20 Hz20 kHz bandwidth, Line in, 14" Main Out, Trim @ unity.)

Main Mix knob down: 75 dBu

Channel Alt / Mute switch engaged: 85 dBu

Channel Gain knob down: 87 dBu

Frequency ResponseMic Input to Main Output (Gain @Unity)

+0, 1 dB, 20 Hz to 50 kHz

+0, 3 dB, 100 kHz

Equivalent Input Noise (EIN)(Mic in to Insert Send out, max gain.)

150 termination: 128.5 dBu 20 Hz20 kHz

Common Mode Rejection Ratio (CMRR)(Mic in to Insert Send out, max gain.)

1 kHz: better than 70 dB

Maximum LevelsMic in: +22 dBu

Tape in: +16 dBu

All other inputs: +22 dBu

Main Mix XLR out: +28 dBu

All other outputs: +22 dBu

ImpedancesMic in: 2.5 k

Channel Insert return: 2.5 k

All other inputs: 10 k or greater

Tape out: 1.1 k

All other outputs: 120

EQHigh Shelving 15 dB @ 12 kHz

Mid Peaking 15 dB @ 2.5 kHz

Low Shelving 15 dB @ 80 Hz

Power Consumption 25 watts

Fuse Rating100-120V: 500 mA slo blo, 5 x 20 mm

220-240V: 250 mA slo blo, 5 x 20 mm

Dimensions (H x W x D) 10.7" x 11.9" x 3.0" (272 mm x 303 mm x 75 mm)

Weight 6.5 lb (3.0 kg)

Microphone StandThebottompanelof

the1202VLZ4hasthreenon-threadedholesthatallowittobefittedwithanoptionalmicrophonestandadapter.Thisallowsyoutosupportthemixeronastandardmicstand,andadjustits height and level to whateversuitsyourstrangely-complexsetofpreferences.

1. Order the Atlas AD-11Bmicstandadapteravailablefrommanyafinemusicstore.(ItismadeanddistributedbyAtlasSound.)

2. UsethreeTrilobularthreadrollingscrews 6-32x1/4"longtosecuretheadapterto thebottomofthe1202VLZ4[seebelow].

Donotusescrewslongerthan1/4",asthesecoulddamagethecircuitboards.Donotusescrewsshorterthan1/4",ortheadapterwillnotbesecurelyfixedtothemixer.

3. DonotordertheAtlasAD-11,asthisisapackof100.Ifyoudo,pleasesendfortheinformativebookletentitled99 things to do with a mic stand adapter.

bottom panel

Holes for mic stand adapter

WEIGHT6.5 lb3.0 kg

19.0 in / 483 mm(optional Rack Mount Kit)

3.0 in75 m

m

11.9 in / 303 mm

10.7 in / 272 mm

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Block Diagram

75H

zH

PF

MID

HI

80

2K5

12K

LO MID

HI

80

2K5

12K

LO

MID

HI

80

2K5

12K

LO

SOL

ORE

LAY

20 10 7 4 2 0 2 4 7 10 20 30

MAIN LMAIN RALT LALT R

AUX SEND 1 PREAUX SEND 1 POSTAUX SEND 2 POST

SOLOLOGIC

PHA

NTOM

POW

ER

MIC

IN

LINE

IN

GA

IN

INS

ERT

LO C

UT

3-BA

ND E

Q

LEVE

LPA

NM

AIN

/ A

LT

AUX

SEN

DS

SOL

O (P

FL)

MON

O CH

ANN

EL(1

OF

4)

21

3

STE

REO

CHA

NNEL

(1 O

F 4)

LINE

IN L

LINE

IN R

3-BA

ND E

Q

LEVE

LPA

N

MA

IN /

ALT

STE

REO

RETU

RN 1

L IN

R IN

STE

REO

RETU

RN 2

L IN

(MON

O)

R IN

GA

IN

GA

IN

RETU

RN T

OA

UX 1

MA

IN M

IXM

AIN

LEVE

L30

dB P

AD

TAPE

OUT

L

LINE

OUT

L

BAL

OUT

L

BAL

OUT

R

LINE

OUT

RA

LT M

IX

ALT

OUT

L

ALT

OUT

R

ALT

TAPE

MA

IN

SOU

RCE

CONT

ROL

ROOM

&PH

ONES

LEV

EL

MET

ERIN

G(0

dBu

= 0

VU)

LEFT

RIG

HT

CONT

ROL

ROOM

OUT

PHON

ES O

UT

AUX

MIX

AUX

1PR

E / P

OST

AUX

SEN

D 2

AUX

SEN

D 1

SOL

O M

IX

AS

SIG

N TO

MA

IN

TAPE

IN+6

dBL R

CONT

ROL

ROOM

&PH

ONES

MIX

2 31

2 31

RUDE

SOL

O LE

D

SOL

O (P

FL)

AUX

2 AUX

1

AUX

1 LE

VEL

TAPE

OUT

R

Since we are always striving to make our products better by incorporating new and improved materials, components, and manufacturing methods, we reserve the right to change these specifications at any time without notice.

The Running Man figure is a registered trademark of LOUD Technologies Inc. All other brand names mentioned are trademarks or registered trademarks of their respective holders, and are hereby acknowledged.

2014 LOUD Technologies Inc. All Rights Reserved.

26 1202VLZ4

1202VLZ4 Track Sheet

SESS

ION

:D

ATE

:#

Cup

s of

Tea

:

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1202VLZ4 Limited Warranty

Please keep your sales receipt in a safe place.

This Limited Product Warranty (Product Warranty) is provided by LOUD Technologies Inc. (LOUD) and is applicable to products purchased in the United States or Canada through a LOUD-authorized reseller or dealer. The Product Warranty will not extend to anyone other than the original purchaser of the product (hereinafter, Customer, you or your).

For products purchased outside the U.S. or Canada, please visit www.720trees.com to find contact information for your local distributor, and information on any warranty coverage provided by the distributor in your local market.

LOUD warrants to Customer that the product will be free from defects in materials and workmanship under normal use during the Warranty Period. If the product fails to conform to the warranty then LOUD or its authorized service representative will at its option, either repair or replace any such nonconforming product, provided that Customer gives notice of the noncompliance within the Warranty Period to the Company at: www.720trees.com or by calling LOUD technical support at 1.800.898.3211 (toll-free in the U.S. and Canada) during normal business hours Pacific Time, excluding weekends or LOUD holidays. Please retain the original dated sales receipt as evidence of the date of purchase. You will need it to obtain any warranty service.

For full terms and conditions, as well as the specific duration of the Warranty for this product, please visit www.720trees.com.

The Product Warranty, together with your invoice or receipt, and the terms and conditions located at www.720trees.com constitutes the entire agreement, and supersedes any and all prior agreements between LOUD and Customer related to the subject matter hereof. No amendment, modification or waiver of any of the provisions of this Product Warranty will be valid unless set forth in a written instrument signed by the party to be bound thereby.

16220 Wood-Red Road NE Woodinville, WA 98072 USAPhone: 425.487.4333Toll-free: 800.898.3211Fax: 425.487.4337 www.720trees.com

Front CoverImportant Safety InstructionsContentsFeaturesIntroductionGetting StartedHookup DiagramsPatchbay Description1. Mic Ins (Channels 1-4)Phantom Power2. Line Ins (Channels 1-4)3. Low Cut (Channels 1-4)4. Gain (Channels 1-4)5. Stereo Line Ins (Channels 5-6, 7-8, 9-10 and 11-12)6. Imaginary ControlEffects: Serial or Parallel?7. Stereo Returns8. Aux Send 1&29. Tape In10. Tape Out11. 1/4" Main Outs12. Headphones Out13. XLR Main Outs14. XLR Main Out Level Switch15. Control Room Outs16. Alt 3-4 Outs17. Channel Insert (Channels 1-4)18. Power Connection19. Fuse20. Voltage Selector21. Power Switch22. Phantom Switch

Channel Strip Description23. Level24. Pre-Fader Solo25. Mute/Alt 3-426. Pan27. Low EQ28. Mid EQ29. Hi EQ30. Aux 2 Send31. Aux 1 Send

Output Section32. Main Mix33. Control Room Source Mix34. Control Room/Submix35. Rude Solo Light36. Assign to Main Mix37. Meters38. Pre or Post (Aux 1)39. Aux 1 Master40 Stereo Returns41. Return to Aux 1Jack Normalling

Appendix A: Service InformationAppendix B: ConnectionsAppendix C: Technical InformationSpecificationsDimensionsBlock DiagramTrack Sheet

Warranty StatementRear Cover