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Installation.................................................. 2Box contents, positioning & power................ 2Inputs ........................................................... 3Outputs ........................................................ 4Speaker power ratings .................................. 5Speaker impedances ..................................... 5Mono bridge mode....................................... 6
Bridge input & output wiring ........................ 6Operation ................................................... 7Protection systems ........................................ 7Servicing....................................................... 7Front & rear panels ....................................... 8Specifications.............................................. 14Warranty & mono bridge loadings .............. 16
CONTENTS
USER MANUAL for
PROFESSIONAL POWER AMPLIFIERS:
A500 • A700v • A750 • A1000 • A1004 • A1500 • A2000 • A3000 • A4000 A5000 • A5003 • A6000 • Q6 • Q900 • Q1004 • QB1000/600 • Line250 • Line500
2 3
InstallationBox contentsIn addition to your amplifier and this manual, the carton should contain the following items:
• Neutrik® Speakon® plugs, depending on your amplifier model:
• Line250, Line500 no Speakon plugs
• A700v: one Speakon plug
• Q6, Q1004, QB1000/600, Q900: four Speakon plugs
• All other models: two Speakon plugs
• A500 and A700v only. Detachable power cable with IEC connector.
• Warranty card. Please complete this card and return it to Chevin Research. Failure to register may result in delays if you require warranty service. See rear cover for warranty.
Positioning• Your amplifier must have good ventilation. Air is drawn in at the rear panel and is expelled
at the front. It is vital to keep front and rear of unit free from obstruction.
• Your amplifier may be used free-standing or installed in a 19” rack. If installed in a rack, the rear of the chassis should be supported. Rear rack-mount supports are integral on all models except the A500 & A700v.
PowerWiring• EARTHING: All Chevin amplifiers must be earthed.
• A500 & A700v models connect to the mains supply via a supplied detachable power cable.
• All other models have fixed power cables, colour coded to European standards: Green/Yellow = Earth Blue=Neutral Brown= Live
• The A5000, A6000 and Q900 have 2 power cables.
• The live connector in certain 115V models is coloured RED.
• The amplifier must be connected to a 3-pin grounded outlet via a 3-pin connector of sufficient voltage and current rating. If the connector has provision for a fuse, a suitable fuse must be fitted.
Mains supply• The power rating of the supply should be at least twice the total audio output of the system.
• VOLTAGE SELECTION: Your amplifier is factory set to your local supply voltage and should be changed only by an authorised Chevin dealer.
• ELECTRIC SHOCK/FIRE HAZARD: The unit must be connected to an adequately rated grounded outlet. All related cables, connectors and switch gear must be sufficiently rated to avoid risk of overheating and fire.
2 3
Power (continued)Three phase systems• IMPORTANT: The neutral current will not balance on three-phase systems.
• Use individual neutral connections from each phase outlet back to the distribution point.
• Alternatively, ensure the neutral conductor is of sufficient capacity to handle a return current equal to the sum total of the current in the three phases.
Inputs• XLR connectors are used on all amplifier inputs except for Line250 and Line500 models.
• Do not directly connect any channel to more than one signal source, these are not mixing amplifiers.
• All inputs are electronically balanced and can accept signals from balanced and unbalanced sources. Maintain the same phase polarity on all equipment in the signal chain.
Inputs from balanced sourcesUse shielded cable with XLR connectors at both ends (except Line250 and Line500):
• Ground/screen: Connect cable braid to XLR pin 1.
• HOT (+) signal: XLR pin 2
• COLD (–) signal: XLR pin 3
Inputs from unbalanced sourcesUse shielded cable with an XLR connector at the amplifier end (except Line250 and Line500) and either a jack plug, phono plug or XLR connector, as appropriate:
• Ground/screen and COLD (–): At the source end, connect the COLD signal wire and cable braid to the sleeve of jack plug or phono connector, or pin 1 of an XLR connector (if used).
• At the source end of the cable, connect the HOT (+) signal to the tip of the jack plug, the pin of the phono plug or pin 2 of an XLR connector (if used).
• Connect the XLR at the amplifier end as per ‘Inputs from balanced sources’ above.
Inputs to Line250 and Line500 modelsThe Line250 and Line500 models use block connectors at the rear panel. Use connections at the source end as explained above for balanced or unbalanced sources. At the amplifier end, make wire connections rather than using an XLR connector.
Mono bridgingVarious models can have their channels bridged together (except A700v, A5000, A6000, QB1000/600, Line250 or Line500). For details about the necessary wiring, see page 6.
Speakon is a registered trademark of Neutrik AGXLR is a registered trademark of ITT Cannon Ltd.
4 5
OutputsConnections are made to the amplifier load using Neutrik Speakon sockets (except for Line250 and Line500 models). As with input connectors, maintain phase polarity throughout the system.
IMPORTANT: High voltages are present at output terminals during operation and for a period afterwards. Do not connect the amplifier to any other amplifier output or to any equipment other than a speaker system.
Take great care to note the wiring specifications particular to your amplifier model:
A700vOne Speakon socket per channel, wired as follows:
1+ = HOT 2+ = NO CONNECTION1– = COLD (not Ground) 2– = NO CONNECTION
WARNING: The A700v output is permanently connected in bridge mode. Both hot and cold outputs carry high level signal. Further bridging is impossible. No terminal of the speaker socket is connected to ground. Do not connect any part of the speaker system to ground.
A500 • A750 • A1000 • A1004 • A1500 • A2000 • A3000 • A4000 • A5003 • Q900Two parallel-connected Speakon sockets (A500: one socket) per channel, wired as follows:
1+ = HOT 2+ = NO CONNECTION1– = GROUND 2– = GROUND
A5000 • A6000Two parallel-connected Speakon sockets per channel, wired as follows:
1+ = HOT 2+ = NO CONNECTION1– = COLD (not Ground) 2– = COLD (not Ground)
WARNING: The A5000 / A6000 outputs are permanently connected in bridge mode. Both hot and cold outputs carry high level signal. Further bridging is impossible. Do not connect any part of the A5000 or A6000 outputs to ground. Take care when using loudspeaker controllers or processors.
Q6 • Q1004One Speakon socket per channel, parallel connected in channel pairs: A & B, C & D.Each socket in the pair carries the output of both channels, wired as follows:
Channel A & B sockets: 1+ = HOT A 2+ = HOT B
1– = GROUND 2– = GROUND
Channel C & D sockets: 1+ = HOT C 2+ = HOT D
1– = GROUND 2– = GROUND
QB1000/600One Speakon socket per channel, parallel connected in pairs: A & B, C & D.Each socket in the pair carries the output of both channels, wired as follows:
Channel A & B sockets: 1+ = HOT B 1000W 2+ = HOT A 600W
1– = GROUND 2– = GROUND
Channel C & D sockets: 1+ = HOT C 1000W 2+ = HOT D 600W
1– = GROUND 2– = GROUND
Line250 • Line500Connect load to output connector blocks using the 0v terminal and either the 70v or 100v HOT terminals, as appropriate to the system.
4 5
Speaker power ratingsSuggested speaker ratings per amplifier channel, in watts.
Model 16Ω 8Ω 4Ω 2Ω
A500 115 230 460 – A700v 450 900 – – A750 160 300 600 – A1000 • Q6 230 450 900 – A1004 • Q1004 400 750 1500 – A1500 500 1000 1900 – QB1000/600 A&D 230 450 900 –
B&C 400 750 1500 – A2000 230 500 1000 1800 A3000 350 650 1300 2300 A4000 450 800 1500 3000 A5000 • A5003 500 1000 2000 3600 A6000 800 1200 2600 4500 Q900 350 650 1300 2300
Speaker impedancesCorrect loadings for all models are shown here. Multiple speakers are connected in parallel.
A700vWARNING: Do not use a system with a total impedance less than 8Ω.
The A700v can be used to drive a 70 volt distribution system (maximum loading 600W) or a 100 volt line system at a reduced output. Note: Do not connect a transformer between the A700v output and distribution system. Where line transformers are used to match speakers to the distribution system, adjust to suit the characteristics of the speaker.
A500 • A750 • A1000 • A1004 • A1500 • Q6 • Q1004 • QB1000/600 (per channel)WARNING: Do not use a system with a total impedance per channel less than 4Ω.
4 or less OR 2 or less OR 1 speaker speakers of 16Ω speakers of 8Ω of 4Ω
A2000 • A3000 • A4000 • A5000 • A5003 • A6000 • Q900 (per channel)WARNING: Do not use a system with a total impedance per channel less than 2Ω.
8 or less OR 4 or less OR 2 or less OR 1 speaker speakers of 16Ω speakers of 8Ω speakers of 4Ω of 2Ω
Note: The A5000 and A6000 models both incorporate an adjustable output limiting control, concealed behind the front panel. Consult an authorised Chevin dealer to enable this feature.
6 7
Mono bridge modeWARNING: You cannot bridge the A700v, A5000, A6000, QB1000/600, Line250 or Line500.
InputsA500
1 Make a lead from the source with two XLR plugs at the amplifier end.
2 HOT output from the source goes to pin 2 of Channel A XLR and pin 3 of Channel B XLR.
3 COLD output from the source goes to pin 3 of Channel A XLR and pin 2 of Channel B XLR.
4 The cable screen goes to pin 1 of both XLR plugs.
Q6 • Q1004
1 Make two leads, one for each source channel. Each lead needs 2 XLR plugs at the amplifier end.
2 In each lead, HOT output from the source goes to pin 2 of the first XLR & pin 3 of the second XLR.
3 In each lead, COLD output from the source goes to pin 3 of first XLR & pin 2 of second XLR.
4 The cable screen goes to pin 1 of both XLR plugs.
5 In each lead, first XLR goes to INPUT A (INPUT C) and second XLR goes to INPUT B (INPUT D).
A750 • A1000 • A1004 • A1500 • A2000 • A3000 • A4000 • A5003 • Q900
1 Bring the input signal into channel A as usual.
2 Make a lead with an inline XLR socket to go to the Channel A LINK connector and an XLR plug to go to the Channel B INPUT socket.
3 Connect socket pin 2 to plug pin 3 and similarly, socket pin 3 to plug pin 2.
Q900: Make a second lead as above for channels C & D.
OutputsA500 • A750 • A1000 • A1004 • A1500 • A2000 • A3000 • A4000 • A5003 • Q900
1 Split the speaker cable by separating the two conductors for a distance of 20cm along cable.
2 Connect the red conductor to terminal 1+ of the Channel A Speakon connector.
3 Connect the black connector to terminal 1+ of the Channel B Speakon connector.
Do not make connections to any other terminals. Q900: Repeat the above for channels C & D.
Q6 • Q1004
1 Connect the red conductor of the speaker cable to terminal 1+ of channel A (C) Speakon conn.
2 Connect the black conductor of the speaker cable to terminal 2+ of channel B (D) Speakon conn.
WARNING: Do not make connections to terminals 1– or 2–.
OperationSet the gain controls of both channels in the same position (preferably at maximum), and control the gain from elsewhere in the system. This ensures the load is shared equally between channels.
Loading and power outputPlease see the rear page for mono bridge loading and power output values.
6 7
Operation & ServicingSwitching on1 Turn the gain controls to the minimum positions.
2 Connect the unit to a mains supply of sufficient power and click the front panel switch(es) to the ON position. Depending on the internal temperature, the fans may run.
• The green Power indicators will illuminate.
• The red Clip indicators will illuminate if overdriving is imminent.
WARNING: Keep sound levels down. High levels of sound can damage hearing.
Switching off• Turn the gain control(s) to the minimum position(s). Click the front panel switch(es) to the
OFF position and disconnect from the mains supply.
WARNING: High voltages are present at output terminals for a period after switching off.
Protection systems• Mains power supply failure: When power is restored, the amp will AutoMute for five seconds.
Do not increase gain settings during this period. Note: A500, A700v, Line250 and Line500 do not AutoMute.
• Shorted output: The unit can operate indefinitely into a shorted output. Normal operation will resume upon removal of the short circuit.
• Low load impedance: Protection is immediate.
• Clipping: The affected channel’s red Clip indicator will illuminate shortly before clipping. A further increase in signal level will activate the SoftClip circuit.
• RF, DC or very low frequency signal at output: A self resetting circuit will activate to protect the load.
• Cooling systems: The internal fans react to both high signal level and temperature inside the unit. If the ambient temperature is high, fan speed will increase even in the absence of a signal.
ServicingWARNING: All servicing and internal maintenance must be referred to an authorised Chevin dealer. Chevin Research accepts no responsibility or liability relating to injury or damages suffered as a result of misuse or unauthorised tampering with amplifiers.
• Do not remove any covers or touch any internal parts. Do not allow any objects (e.g. screwdrivers, cable ends, etc.) to enter the unit.
• If the unit of any other electrical equipment in the system becomes wet during operation, disconnect the power source immediately. Do not touch the amplifier. Consult a qualified engineer.
• If there are any signs of mechanical damage, disconnect the power source and consult a qualified engineer.
8 9
CHANNEL BCHANNEL ALINEAR AMPLIFIER
POWER
CLIP
SIGNAL
POWERA500
Power switchChannel A gain
control
Channel Bgain
control
Power, Clip and Signal indicators
GAINLINEAR AMPLIFIER
POWER
CLIP
SIGNAL
POWERA700v
Power switchGaincontrol
Power, Clip and Signal indicators
CHANNEL A CHANNEL CCHANNEL B CHANNEL D
POWER
ATTENUATION dB ATTENUATION dB
POWER POWER
CLIP CLIP
SIGNAL SIGNAL
INF INF
20 20
10 10
6 6
3 3
1 1
0 0ATTENUATION dB ATTENUATION dB
INF INF
20 20
10 10
6 6
3 3
1 1
0 0
Q1004
600W 1000W
CHANNEL A
1000
QB
600
CHANNEL B
POWER
ATTENUATION dB
POWER
CLIP
SIGNAL
INF
20
10
6
3
1
0ATTENUATION dB
INF
20
10
6
3
1
0
1000W 600W
CHANNEL C CHANNEL D
ATTENUATION dB
POWER
CLIP
SIGNAL
INF
20
10
6
3
1
0ATTENUATION dB
INF
20
10
6
3
1
0
Power switch
Channel A gain
control
Power, Clip and Signal indicators
Channel B gain
control
Channel C gain
control
Power, Clip and Signal indicators
Channel D gain
control
Power switch
600W (Channel A) gain control
Power, Clip and Signal indicators
1000W (Channel B) gain control
Power, Clip and Signal indicators
1000W (Channel C) gain control
600W (Channel D) gain control
Q1004
QB
10
00
/600
A500 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
A700v SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
Q1004 • QB1000/600 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANELS
8 9
Mains inputFuseChannel BInput
connector
Channel BOutput
connector
SN:
FUSEINPUT
INPUT
OUTPUT
OUTPUT
CHANNEL ACONNECTOR WIRING
INPUT2 HOT 3 COLD 1 GND
OUTPUT1+HOT 1-COLD
MINIMUM LOAD 4 OHMS
CHANNEL BCONNECTOR WIRING
INPUT2 HOT 3 COLD 1 GND
OUTPUT1+HOT 1-COLD
MINIMUM LOAD 4 OHMS
FUSE RATING110-120V = 16A220-240V = 7APLEASE SEE
MANUAL
MADE IN ENGLAND BYCHEVIN RESEARCH LTD
OTLEY LS21 3LP
LINEAR AUDIO POWERAMPLIFIER MODEL: A500
DANGER OFELECTRIC SHOCK
WHEN COVERS REMOVED
Channel AInput
connector
Channel AOutput
connector
Mains inputFuseInput connector
Output connector
SN:
FUSEINPUT
OUTPUT
CONNECTOR WIRINGINPUT
2 HOT 3 COLD 1 GNDOUTPUT
1+HOT 1-COLDMINIMUM LOAD 4 OHMS
FUSE RATING110-120V = 16A220-240V = 7APLEASE SEE
MANUAL
MADE IN ENGLAND BYCHEVIN RESEARCH LTD
OTLEY LS21 3LP
LINEAR AUDIO POWERAMPLIFIER MODEL: A700v
DANGER OFELECTRIC SHOCK
WHEN COVERS REMOVED
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING CONNECTOR WIRING
DANGER OF ELECTRIC SHOCKWHEN COVERS REMOVED
LINEAR AUDIOPOWER AMPLIFIERMODEL: QB1004
SN
INPUT D INPUT C INPUT B INPUT A
OUTPUTS OUTPUTSOUTPUTS OUTPUTS
CHANNEL C+D CHANNEL A+BMADE IN ENGLAND BY
CHEVIN RESEARCH LTDOTLEY LS21 3LP
FUSE RATING220-240V = 40A
PLEASE SEE MANUAL
LOAD 4 OHMS MINIMUM
CH.D:1+ HOT 1- COLDCH.C:2+ HOT 2- COLD
CH.A:1+ HOT 1- COLDCH.B:2+ HOT 2- COLD
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING CONNECTOR WIRING
DANGER OF ELECTRIC SHOCKWHEN COVERS REMOVED
LINEAR AUDIOPOWER AMPLIFIERMODEL: QB1000/600
SN
INPUT D INPUT C INPUT B INPUT A
OUTPUT C/D OUTPUT A/BOUTPUT C/D OUTPUT A/B
CHANNEL C+D CHANNEL A+BMADE IN ENGLAND BY
CHEVIN RESEARCH LTDOTLEY LS21 3LP
FUSE RATING220-240V = 20A110-120V = 40A
PLEASE SEE MANUAL
LOAD 4 OHMS MINIMUM
CH.D:2+ HOT 2- COLD (600W)CH.C:1+ HOT 1- COLD (1000W)
CH.D:2+ HOT 2- COLD (600W)CH.C:1+ HOT 1- COLD (1000W)
CH.A:2+ HOT 2- COLD (600W)CH.B:1+ HOT 1- COLD (1000W)
CH.A:2+ HOT 2- COLD (600W)CH.B:1+ HOT 1- COLD (1000W)
FuseChannel C & Dinput XLR sockets
Vari speedcooling fan
Channel C & Doutput Speakon
sockets (1 per ch)
Channel A & Binput XLR sockets
Channel A & Boutput Speakon
sockets (1 per ch)
Vari speedcooling fan
FuseChannel C & Dinput XLR sockets
Vari speedcooling fan
Channel C & Ddual output
Speakon sockets
Channel A & Binput XLR sockets
Channel A & Bdual output
Speakon sockets
Vari speedcooling fan
Q1004
QB
10
00
/600
A500 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
Q1004 • QB1000/600 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANELS
A700v SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
10 11
A5000 • A6000 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
A750 • A1000 • A1004 • A1500 • A2000 • A3000 SEE PAGE 6 • FRONT PANEL
A4000 • A5003 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
CHANNEL A CHANNEL B POWERLINEAR AMPLIFIERAxxxxATTENUATION dB ATTENUATION dB
POWER
CLIP
SIGNAL
INF INF
20 20
10 10
6 6
3 3
1 1
0 0
CHANNEL A CHANNEL B
POWER
LINEAR AMPLIFIERAxxxxATTENUATION dB
POWER
CLIP
SIGNAL
INF
20
10
6
3
1
0ATTENUATION dB
INF
20
10
6
3
1
0
CHANNEL A
CHANNEL B
POWER
POWER
LINEARPOWER
AMPLIFIER
A6000
POWER ON
POWER ON
LIMITER
LIMITER
RMSOUTPUTVOLTS
RMSOUTPUTVOLTS
12
12
24
24
36
36
48
48
60
60
72
72
84
84
Power switchChannel B gain
control
Power, Clip and Signal indicators
Channel A gain
control
Power switchChannel B gain
control
Power, Clip and Signal indicators
Channel A gain
control
Channel A and B Power switches
Channel B gain
control
Power, Signal & Limiter indicators
Channel A gain
control
The Limiter indicator lights when amp is being driven into clip and shows SoftClip system is active. If clip threshold is exceeded, the intensity of this LED gives an indication of the degree of overdrive.
Model shown is A6000. Signal indicator values are different for A5000.
10 11
A5000 • A6000 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
A750 • A1000 • A1004 • A1500 • A2000 • A3000 SEE PAGES 3, 4 & 5 • REAR PANEL
A4000 • A5003 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
INPUT INPUT
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING1+ HOT 1- COLD
CONNECTOR WIRING1+ HOT 1- COLD
FUSE RATINGSEE LEGEND ON AMPLIFIER
PLEASE SEE MANUAL SNDANGER OF ELECTRIC SHOCKWHEN COVERS REMOVED
LINEAR AUDIOPOWER AMPLIFIERMODEL: Axxxx
LINK LINKOUTPUTS OUTPUTSOUTPUTS OUTPUTS
FUSECHANNEL B CHANNEL A
MADE IN ENGLAND BY
OTLEY LS21 3LPCHEVIN RESEARCH LTD
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING1+ HOT 1- COLD
CONNECTOR WIRING1+ HOT 1- COLD
DANGER OF ELECTRIC SHOCKWHEN COVERS REMOVED
LINEAR AUDIOPOWER AMPLIFIERMODEL: Axxxx
SN
LINK LINKINPUT INPUT
OUTPUT OUTPUTOUTPUT OUTPUT
CHANNEL B CHANNEL AMADE IN ENGLAND BY
CHEVIN RESEARCH LTDOTLEY LS21 3LP
FUSE RATING220-240V = 30A (40A)
PLEASE SEE MANUAL
LOAD 2 OHMS MINIMUM
INPUT
INPUT
LINK
LINK
OUTPUTS
OUTPUTS
OUTPUTS
OUTPUTS
FUSE
FUSE
CHANNEL A INPUT
CHANNEL B INPUT
CHANNEL A OUTPUT
CHANNEL B OUTPUT
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING1+ HOT 1- COLD
CONNECTOR WIRING1+ HOT 1- COLD
LOAD 2 OHMS MINIMUM
LOAD 2 OHMS MINIMUM SN
FUSE RATINGSEE LEGEND ON AMPLIFIER
FUSE RATINGSEE LEGEND ON AMPLIFIER
PLEASE SEE MANUAL
PLEASE SEE MANUAL
LINEAR AUDIOPOWER AMPLIFIERMODEL: Axxxx
MADE IN ENGLAND BY
OTLEY LS21 3LPCHEVIN RESEARCH LTD
MADE IN ENGLAND BY
OTLEY LS21 3LPCHEVIN RESEARCH LTD
WARNINGTHE 2 CHANNELS OF THIS AMPLIFIER
MUST NOT BE BRIDGED
OF ELECTRIC SHOCKWHEN COVERS REMOVED
DANGER
FuseChannel B input and link
connectors
Channel B dual output connectors
Vari speedcooling fan
Vari speedcooling fan
Channel A input and link
connectors
Channel A dual output connectors
FuseChannel B input and link
connectors
Channel B dual output connectors
Vari speedcooling fan
Vari speedcooling fan
Channel A input and link
connectors
Channel A dual output connectors
FusesChannel A input and link
connectors
Channel A dual output connectors
Vari speedcooling fans
Vari speedcooling fans
Channel B dual output connectors
Channel B input and link
connectors
12 13
Line250 • Line500 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
Q6 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
Q900 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
CHANNEL CCHANNEL A CHANNEL DCHANNEL B Q-6 POWERATTENUATION dBATTENUATION dB ATTENUATION dBATTENUATION dB
POWERPOWER
CLIPCLIP
SIGNALSIGNAL
INFINF INFINF
2020 2020
1010 1010
66 66
33 33
11 11
00 00
POWER
POWER
Q900
CHANNEL B
CHANNEL D
CHANNEL A
CHANNEL C
POWER
POWER
CLIP
CLIP
SIGNAL
SIGNAL
line amplifier
CHANNEL A CHANNEL BATTENUATION dB ATTENUATION dB
SIGNALCLIP
POWER
CLIPSIGNAL
INF INF
20 20
10 106 6
3 3
1 1
0 0
Line
Power switch
Channel A gain
control
Power, Clip and Signal indicators
Channel B gain
control
Channel C gain
control
Power, Clip and Signal indicators
Channel D gain
control
Channel A gain
control
Power, Clip and Signal indicators
Channel D gain
control
Channel A/B and C/D Power
switches
Channel B gain
control
Channel C gain
control
Power switchChannel B gain
control
Power, Clip and Signal indicators
Channel A gain
control
12 13
Line250 • Line500 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
Q6 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
Q900 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
INPUT D INPUT A
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRINGCH.C: 1+ HOT 1- COLDCH.D: 2+ HOT 2- COLD
CONNECTOR WIRINGCH.A: 1+ HOT 1- COLDCH.B: 2+ HOT 2- COLDFUSE RATING
SEE LEGEND ON AMPLIFIER
PLEASE SEE MANUAL SNDANGER OF ELECTRIC SHOCKWHEN COVERS REMOVED
LINEAR AUDIOPOWER AMPLIFIERMODEL: Q6
INPUT C INPUT BOUTPUTS OUTPUTSOUTPUTS OUTPUTS
FUSECHANNEL C+D CHANNEL A+B
MADE IN ENGLAND BY
OTLEY LS21 3LPCHEVIN RESEARCH LTD
INPUT
INPUT
INPUT
INPUT
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING2 HOT 3 COLD 1 GND
CONNECTOR WIRING1+ HOT 1- COLD
CONNECTOR WIRING1+ HOT 1- COLD
CONNECTOR WIRING1+ HOT 1- COLD
CONNECTOR WIRING1+ HOT 1- COLD
FUSE RATINGSEE LEGEND ON AMPLIFIER
FUSE RATINGSEE LEGEND ON AMPLIFIER
PLEASE SEE MANUAL
PLEASE SEE MANUAL
SN
SN
DANGER OF ELECTRIC SHOCKWHEN COVERS REMOVED
DANGER OF ELECTRIC SHOCKWHEN COVERS REMOVED
LINEAR AUDIOPOWER AMPLIFIERMODEL: Q900
LINK
LINK
LINK
LINK
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
FUSE
FUSE
CHANNEL B
CHANNEL D
CHANNEL A
CHANNEL C
MADE IN ENGLAND BY
OTLEY LS21 3LPCHEVIN RESEARCH LTD
DANGER OF ELECTRIC SHOCKWHEN COVERS REMOVED
LINE AMPLIFIERMODEL: LINE 500/250 SN
0v
1 1
0v
OUTPUT OUTPUT
INPUT INPUT1 GND2 HOT3 COLD
1 GND2 HOT3 COLD
70v
2 2
70v100v
3 3
100v
CHANNEL B CHANNEL A
MADE IN ENGLAND BYCHEVIN RESEARCH LTDOTLEYLS21 3LP
FUSE
FUSE RATINGLINE
220 - 240v110 - 120v
50020A16A
25010A7A
FuseChannel C & D input connectors
Channel C+D dual output connectors
Vari speedcooling fan
Vari speedcooling fan
Channel A & B input connectors
Channel A+B dual output connectors
FusesChannel B input & link connectors
Vari speedcooling fans
Vari speedcooling fans
Channel D input & link connectors
Channel B & channel D dual output connectors
Channel A & channel C dual output connectors
Channel C input & link connectors
Channel A input & link connectors
FuseChannel B output connector block
Channel B input connector block
Vari speedcooling fan
Vari speedcooling fan
Channel A output connector block
Channel A input connector block
14 15
Gen
eral
spe
cifi
cati
ons
A50
0 A
700v
A
750
A
1000
A
1004
A
1500
Q
6 Q
1004
Q
B100
0/60
0RM
S po
wer
out
put
into
4Ω
(per
chan
.) 35
0W
n/a
425W
60
0W
1000
W
1250
W
600W
10
00W
2x
1000
W/2
x600
Win
to 8
Ω (p
er ch
an.)
200W
60
0W
250W
35
0W
600W
65
0W
350W
60
0W
2x60
0W/2
x350
WN
o. o
f cha
nnel
s 2
1 2
2 2
2 4
4 4
Pow
er b
andw
idth
+0d
B, -3
dB
2Hz -
40k
Hz
2Hz -
40k
Hz
2Hz -
80k
Hz
2Hz -
80k
Hz
2Hz -
80k
Hz
2Hz -
80k
Hz
2Hz -
80k
Hz
2Hz -
80k
Hz
2Hz -
80k
HzSl
ew ra
te in
exc
ess o
f 40
V/µS
40
V/µS
75
V/µS
75
V/µS
75
V/µS
60
V/µS
75
V/µS
75
V/µS
75
V/µS
Gai
n x3
7.5
x70
x40
x50
x65
x70
x50
x65
x65
/ x50
Tota
l har
mon
ic d
isto
rtio
nty
pica
l @ 1
dB b
elow
clip
0.
06%
0.
06%
0.
04%
0.
04%
0.
04%
0.
04%
0.
04%
0.
04%
0.
04%
20kH
z @ 1
dB b
elow
clip
0.
08%
0.
08%
0.
07%
0.
07%
0.
07%
0.
07%
0.
07%
0.
07%
0.
07%
Sign
al to
noi
se ra
tiotyp
. ref.
full o
utpu
t, un
weig
hted
-1
20dB
-1
20dB
12
5dB
-125
dB
-125
dB
-125
dB
-125
dB
-125
dB
-125
dBW
orst
case
10H
z - 3
0kHz
-9
5dB
-95d
B -9
5dB
-95d
B -9
5dB
-95d
B -9
5dB
-95d
B -9
5dB
Cros
stal
kty
pica
l -1
15dB
n/
a -1
15dB
-1
15dB
-1
15dB
-1
15dB
-1
15dB
-1
15dB
-1
15dB
wor
st ca
se 1
0Hz -
30k
Hz
-95d
B n/
a -9
5dB
-95d
B -9
5dB
-95d
B -9
5dB
-95d
B -9
5dB
Dam
ping
fact
or
400
400
400
400
400
400
400
400
400
Inpu
t im
peda
nce
elec
troni
cally
bal
ance
d 10
kΩ
10kΩ
10
kΩ
10kΩ
10
kΩ
10kΩ
10
kΩ
10kΩ
10
kΩ
Com
mon
mod
e re
ject
ion
(typ
.) -7
0dB
-70d
B -7
0dB
-70d
B -7
0dB
-70d
B -7
0dB
-70d
B -7
0dB
Inpu
t sen
sitiv
ityre
f. ful
l out
put i
nto
4Ω
1V R
MS
1V R
MS
1V R
MS
1V R
MS
1V R
MS
1V R
MS
1V R
MS
1V R
MS
1V R
MS
Prot
ectio
ncli
ppin
g so
ft so
ft so
ft so
ft so
ft so
ft so
ft so
ft so
ftlo
ad b
elow
2.4
Ω
dyna
mic
linea
r dy
nam
ic lin
ear
dyna
mic
linea
r dy
nam
ic lin
ear
dyna
mic
linea
r dy
nam
ic lin
ear
dyna
mic
linea
r dy
nam
ic lin
ear
dyna
mic
linea
rsh
orte
d ou
tput
, DC
or R
F at o
utpu
t im
med
iate
imm
ediat
e im
med
iate
imm
ediat
e im
med
iate
imm
ediat
e im
med
iate
imm
ediat
e im
med
iate
Pow
er c
onsu
mpt
ion
1.2k
VA
1.2k
VA
1.5k
VA
2kVA
3.
3kVA
4k
VA
4kVA
6.
6kVA
5.
2kVA
50/6
0Hz A
C in
vol
ts
220-
240V
22
0-24
0V
220-
240V
22
0-24
0V
220-
240V
22
0-24
0V
220-
240V
22
0-24
0V
220-
240V
inte
rnal
ly se
lect
able
for
100-
120V
10
0-12
0V
100-
120V
10
0-12
0V
100-
120V
10
0-12
0V
100-
120V
n/
a 10
0-12
0VD
imen
sion
s/w
eigh
tra
ck u
nits
1U
1U
2U
2U
2U
2U
2U
3U
3U
heig
ht x
wid
th x
dep
th (i
nche
s) 1.
75x1
9x8.
5 1.
75x1
9x8.
5 3.
5x19
x15
3.5x
19x1
5 3.
5x19
x15
3.5x
19x1
5 3.
5x19
x15
5.25
x19x
15
5.25
x19x
15he
ight
x w
idth
x d
epth
(mm
) 44
x483
x215
44
x483
x215
88
x483
x381
88
x483
x381
88
x483
x381
88
x483
x381
88
x483
x381
13
2x48
3x38
1 13
2x48
3x38
1gr
oss w
eigh
t 5.
2kg/
11.5
lbs
5.1k
g/11
.2lb
s 10
kg/2
2lbs
10
kg/2
2lbs
13
.3kg
/29l
bs
14kg
/31l
bs
14kg
/30.
9lbs
16
kg/3
4lbs
20
kg/4
4lbs
net w
eigh
t 4.
7kg/
9lbs
4k
g/8.
8lbs
8.
4kg/
18.5
lbs
8.5k
g/19
lbs
11.7
kg/2
6lbs
12
.4kg
/27l
bs
12.3
kg/2
7lbs
14
kg/2
9.6l
bs
18kg
/40.
5lbs
14 15
Gen
eral
spe
cifi
cati
ons
Q90
0 A
2000
A
3000
A
4000
A
5000
A
5003
A
6000
Li
ne25
0 Li
ne50
0RM
S po
wer
out
put (
10Hz
-20k
Hz)
into
2Ω
(per
chan
.) 16
00W
12
00W
16
00W
20
00W
25
00W
25
00W
30
00W
Lin
e op
erat
ion:
Lin
e op
erat
ion:
into
4Ω
(per
chan
.) 90
0W
650W
90
0W
1000
W
1500
W
1500
W
2000
W
70V
10
0V
70V
10
0Vin
to 8
Ω (p
er ch
an.)
500W
35
0W
500W
60
0W
900W
90
0W
1200
W
175W
25
0W
350W
50
0WN
o. o
f cha
nnel
s 4
2 2
2 2
2 2
2 2
Pow
er b
andw
idth
+0d
B, -3
dB
2Hz -
80k
Hz
2Hz -
80k
Hz
2Hz -
80k
Hz
2Hz -
80k
Hz
2Hz -
50k
Hz
2Hz -
80k
Hz
2Hz -
50k
Hz
30Hz
- 16
kHz
30Hz
- 16
kHz
Slew
rate
in e
xces
s of
50V/
µS
75V/
µS
50V/
µS
65V/
µS
50V/
µS
65V/
µS
50V/
µS
40V/
µS
40V/
µSG
ain
x60
x50
x60
x65
x70
x70
x90
n/a
n/a
Tota
l har
mon
ic d
isto
rtio
nty
pica
l @ 1
dB b
elow
clip
0.
04%
0.
04%
0.
04%
0.
04%
0.
04%
0.
04%
0.
04%
0.
04%
0.
04%
20kH
z @ 1
dB b
elow
clip
0.
07%
0.
07%
0.
07%
0.
07%
0.
07%
0.
07%
0.
07%
n/
a n/
aSi
gnal
to n
oise
ratio
typ. r
ef. fu
ll out
put,
unw
eight
ed
-125
dB
-125
dB
-125
dB
-125
dB
-125
dB
-125
dB
-125
dB
-120
dB
-120
dBW
orst
case
10H
z - 3
0kHz
-9
5dB
-95d
B -9
5dB
-95d
B -9
5dB
-95d
B -9
5dB
-95d
B -9
5dB
Cros
stal
kty
pica
l -1
15dB
-1
15dB
-1
15dB
-1
15dB
-1
15dB
-1
15dB
-1
15dB
-1
15dB
-1
15dB
wor
st ca
se 1
0Hz -
30k
Hz
-95d
B -9
5dB
-95d
B -9
5dB
-95d
B -9
5dB
-95d
B -9
5dB
-95d
BD
ampi
ng fa
ctor
40
0 40
0 40
0 40
0 40
0 40
0 40
0 n/
a n/
aIn
put i
mpe
d. e
lect
roni
cally
bal
ance
d 10
kΩ
10kΩ
10
kΩ
10kΩ
10
kΩ
10kΩ
10
kΩ
10kΩ
10
kΩ
Com
mon
mod
e re
ject
ion
(typ
.) -7
0dB
-70d
B -7
0dB
-70d
B -7
0dB
-70d
B -7
0dB
-70d
B -7
0dB
Inpu
t sen
sitiv
ityre
f. ful
l out
put i
nto
4Ω
1V R
MS
1V R
MS
1V R
MS
1V R
MS
1V R
MS
1V R
MS
1V R
MS
1V R
MS
1V R
MS
Prot
ectio
ncli
ppin
g so
ft so
ft so
ft so
ft so
ft so
ft so
ft so
ft so
ftlo
ad b
elow
1.2
Ω
dyna
mic
linea
r dy
nam
ic lin
ear
dyna
mic
linea
r dy
nam
ic lin
ear
dyna
mic
linea
r dy
nam
ic lin
ear
dyna
mic
linea
r n/
a n/
ash
orte
d ou
tput
, DC
or R
F at o
utpu
t im
med
iate
imm
ediat
e im
med
iate
imm
ediat
e im
med
iate
imm
ediat
e im
med
iate
imm
ediat
e im
med
iate
Pow
er c
onsu
mpt
ion
5.3k
VA p
er p
air
3.9k
VA
5.3k
VA
6.6k
VA
4kVA
per
chan
. 8k
VA
5.3k
VA p
er ch
an.
1kVA
1.
6kVA
50/6
0Hz A
C in
vol
ts
220-
240V
22
0-24
0V
220-
240V
22
0-24
0V
220-
240V
22
0-24
0V
220-
240V
22
0-24
0V
220-
240V
inte
rnal
ly se
lect
able
for
100-
120V
10
0-12
0V
100-
120V
n/
a 10
0-12
0V
n/a
100-
120V
10
0-12
0V
100-
120V
Dim
ensi
ons/
wei
ght
rack
uni
ts
4U
2U
2U
3U
4U
3U
4U
3U
3Uhe
ight
x w
idth
x d
epth
(inc
hes)
7x19
x15
3.5x
19x1
5 3.
5x19
x15
5.25
x19x
15
7x19
x15
5.25
x19x
15
7x19
x15
5.25
x19x
15
5.25
x19x
15he
ight
x w
idth
x d
epth
(mm
) 17
8x48
3x38
1 88
x483
x381
88
x483
x381
13
2x48
3x38
1 17
8x48
3x38
1 13
2x48
3x38
1 17
8x48
3x38
1 13
2x48
3x38
1 13
2x48
3x38
1gr
oss w
eigh
t 23
.5kg
/59l
bs
13.3
kg/2
9lbs
14
kg/3
1lbs
16
kg/3
4lbs
23
.5kg
/59l
bs
16kg
/34l
bs
23.5
kg/5
9lbs
18
kg/4
0lbs
22
kg/5
0lbs
net w
eigh
t 21
.5kg
/47.
4lbs
11
.7kg
/26l
bs
12.4
kg/2
7lbs
14
kg/2
9.6l
bs
21.5
kg/4
7.4l
bs
14kg
/29.
6lbs
21
.5kg
/47.
4lbs
16
kg/3
6lbs
20
kg/4
5lbs
WarrantyThis precision engineered CHEVIN product is guaranteed against defects due to faulty materials and workmanship for a period of twenty four (24) months from the date of the original purchase, subject to the following restrictions:
• This warranty is only valid in the country of purchase
• The equipment has not been abused or operated in conjunction with unsuitable or faulty apparatus. The equipment has not been disassembled, modified or tampered with by any person other than our CHEVIN staff or overseas by our own or distributors’ staff.
• The equipment has not suffered damage in transit.
Should service be required, notify the dealer from whom you purchased the equipment to arrange for an authorised CHEVIN agent to confirm the need for attention.
• Do not dispatch the goods without the prior approval of CHEVIN or its authorised agents. If asked to return the goods, pack them carefully (preferably in the original carton) and return pre-paid. Insurance is recommended as goods are returned at owner’s risk.
• Packing insurance and freight on the return journey will be paid for by CHEVIN or its authorised agents only if warranty work proves necessary. If warranty work proves unnecessary, goods will be released upon payment by the owner for charges for non-warranty repair work and return packing, insurance and freight.
• The attached warranty card should be completed and returned to CHEVIN RESEARCH LTD.
• Failure to register by not returning the warranty card in no way limits or invalidates the warranty, but in the event of service being required, delay may result since warranty work cannot begin until the original sale has been verified.
• In case of difficulty, contact CHEVIN RESEARCH LTD. This warranty in no way affects your statutory rights.
This manual is intended for informational purposes only. All details included herein are subject to change without notice. Chevin Research Ltd. shall not be held responsible for any damages, direct or indirect,
arising from or relating to the use of this manual. © Chevin Research Ltd. 2004. All rights reserved.
Mono bridge loading and power outputs (see page 6 for details) Model Minimum load Power output
A500 1 load of 8Ω 650WA750 1 load of 8Ω 850WA1000 1 load of 8Ω 1200WA1004 1 load of 8Ω 2000WA1500 1 load of 8Ω 2500WA2000 1 load of 4Ω 2400WA3000 1 load of 4Ω 3000WA4000 1 load of 4Ω 4000WA5003 1 load of 4Ω 5000WQ900 1 load of 4Ω per channel pair 3000W per channel pairQ6 1 load of 8Ω per channel pair 1200W per channel pairQ1004 1 load of 8Ω per channel pair 2000W per channel pair
Range guide • 1.0c • Dec 2004