TECHNICAL SPECIFICATIONS FOR INTERIOR WORKS FOR AUDITORIUM ...engineeringprojects.com/Tender/UploadFiles/1516_Technical-specification-_582_.pdf · The design eliminates late reflection

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TECHNICAL SPECIFICATIONS

FOR

INTERIOR WORKS

FOR

AUDITORIUM

FOR NEW CDRI CAMPUS PROJECT, LUCKNOW (U.P.)

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TECHNICAL SPECIFICATIONS FOR ACOUSTICAL INTERIOR WORKS, SOUND REINFORCEMENT AND AUDIO-VISUAL SYSTEM AND STAGE LIGHTING SYSTEM FOR AUDITORIUM.

A) TECHNICAL SPECIFICATION FOR ACOUSTICAL INTERIORS :

1. General

1.1. The work under the contract shall be carried out in accordance with the schedule of items of work, the particular specifications drawings forming part of this tender document, and the general conditions and other provisions of the tender.

1.2. The system shall be designed in accordance with the appropriate IS, BS, DIN or

IEC recommendations. 2. Functional Requirements To provide an acoustical treatment that will fulfill the following design criteria:

a) Provide the desired reverberation time as given below. b) Provide sound isolation of over 40dB. c) Provide a background noise level following the NC35 curve. The main source of

background noise is the HVAC system and leaking of noise from outside.

For this, the contractor shall follow the design provided to a dot, and will not have the freedom or flexibility to substitute specified items for sub-standard equivalents.

3. Proposed Design Acoustics

The design provides to achieve the following acoustical parameters in the auditorium:

To achieve a background noise level of NC35 noise criteria, with the HVAC units on. Lower background noise level helps provide a clearer sound during a performance at a lower sound level from source.

Accurate control of the RT, or reverberation time for all frequencies of sound, that is, the time taken for the source sound to die down by 60dB.

The design eliminates late reflection of sound and keeps the auditorium free from flutter echoes, so that there is a smooth decay of sound.

On the other hand, the design encourages early reflection of sound, where the reflected sound reaches the listener in less than 40 milliseconds, thereby enhancing the original and making it sound fuller and richer.

The design provides for a target RT60 level of 1.2-1.5 seconds, when the auditorium is 2/3 full.

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4. Design Guidelines While offering specific treatment in acoustics, the following act as guidelines:

4.1. All paneling on side and rear walls above a height of 2.1m above floor level designed to provide a high NRC of 0.85 or higher

4.2. Reflective paneling on side walls up to a 2.1m height to create desired early

reflection of sound. 4.3. Acoustical treatment on side walls of stage area and stage ceiling, to prevent

formation of undesirable echo from stage monitor speakers, and in the case of direct sound from musicians on stage.

4.4. All fabric being used as cladding material to have a fire-retardant coating. The

certification of the same to be provided by Contractor. 4.5. All minimum air-gaps of paneling/ ceiling from abutting walls/ roof to be provided

strictly as per specifications and drawings.

5. Scope of work 5.1. The contract is for the supply of all necessary materials and labour for the

execution of said jobs and the installation and commissioning of the acoustical treatments.

The contract shall include the following:

5.2. All necessary materials and the installation and commissioning of the acoustical treatment as specified complete.

6. Contractor's Responsibility

6.1. It is the intention of the specifications to specify the principal performance and requirements for the acoustical treatment system.

6.2. It shall be entirely the responsibility of the tenderer to provide an acoustical

system which shall meet all the specified requirements; and to select different components which are adequate in terms of desired Noise Rating and other requisite acoustical properties, as given in the technical specifications.

6.3. The contractor shall, whenever called upon to do so, submit for the approval of

the Engineer data of the technical properties of the various materials being used. If required to do so by the Engineer, he shall provide laboratory test reports of the Acoustical properties of any material being used.

7. Completeness of Contract

All special fittings and fixtures needed for appropriate fabrication of the acoustical panels and ceiling etc. not specifically mentioned but that are usual for the fabrications shall be included in the supply without any extra cost to the contract.

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8. Departure from Specifications

The work shall be carried out according to specifications. Any deviation from these specifications either on account of manufacturing practices or for any other reason including the measures for additional efficiency and/or safety of the equipment shall be clearly stated in a covering letter explaining in detail each and every departure the contractor proposes to make from the tender giving reasons thereof. Unless specifically mentioned it will be assumed that the tenderer agrees to supply all equipment and complete the work exactly as specified therein and as shown in the drawings in its entirety. All deviations shall be subject to the approval of the engineer.

9. Descriptive Literature

The tenderer shall supply a complete list with quantities of major items of materials together with detailed descriptive literature including photographs and performance characteristics pertaining to the materials being used.

10. Inside Temperatures and Humidity All acoustical treatment should be capable of performing satisfactorily in an ambient

temperature of 45 deg C and 80% humidity. 11. Standards The materials used in the equipment shall conform to and be supplied in accordance with

the latest revision of relevant IS, BS, DIN or IEC standards or equivalent current at the time of tender. All the work shall also conform to the requirements of local codes and regulations. Tenderer should justify the particular standard chosen with reference to the operating context.

12. Auditoriums Chairs Seat Rest Assembly The seat rest assembly is 1.5cm thk marine plywood insitu moulded with moulded polyurethane foam & upholstered with fabric.

Seat Size 530mm. (W) x600mm (D) x 950mm (H)

Back Rest Assembly The back rest assembly is made up of a M.S fabricated frame insitu moulded with polyurethane foam. The back foam is designed with contoured lumbar support for extra comfort. Back Size: 46.5cm (W) x 62.5 cm (D)x 9.5 cm (T) Avg. Polyurethane Foam

The polyurethane foam for seat and back is moulded with density = 45+/-2Kgs/cu.m. and hardness= 20 +/-2 on Hampden machine at 25% compression.

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Armrest The armrest is made up of integral polyurethane foam and reinforced with M.S insert. The armrest is available with Cup holder. Sliding Mechanism The Sliding Mechanism is fabricated from M.S sheets forming linkages providing a synchronous motion for seat & back. The sliding stroke for the seat is 100mm. The mechanism houses the seat & back. Side Panel/Aisle Panel The chair rests on the ground on two side panels frames made of 2.5mm thk CR Steel. Each Side panel is fitted with two upholstered practical board of 9mm thk. The side panel frame is grouted to the floor using foundation expansion bolts through base plate. Powder Coating All steel components are epoxy polyester powder coated.

Sound Acoustic Door Fabricating and fixing on site 75mm thick acoustic sound reducing doors made with 2nd class Teak Wood framework, infill in 96 kg/ cum density resin bonded glass wool with 6mm commercial water proof ply and 4mm thick veneer on both sides . Cost includes teak second Chowkhat (section size : 5" x 3") and melamine polish over veneer ply. The doors to be provided with required fittings and fixtures Anechoic barrier designed to achieve SHIELDING EFFECTIVENESS 25-35 dB. It prevents the noise and absorb the sound through the gate barriers

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B) TECHNICAL SPECIFICATION FOR SOUND REINFORCEMENT AND AUDIO-VISUAL SYSTEM

1. General


1.2. The system shall be designed in accordance with the appropriate BS, DIN or

IEC recommendations. 2. Functional Requirements 2.1 To provide a high quality sound reinforcement system in the auditorium, for the

reinforcement of ‘live’ programs on stage, which will include but not be restricted to seminars, conferences, theatrical productions, choreography, dance and musical shows, and possible screening of documentaries and other AV media..

2.2 To provide playback of pre-recorded material from cassette/ CD, and recording of ‘live’ stage programs.

3. Proposed Design 3.1. The sound reinforcement system In the hall is required to serve the requirements

for theatre, speech and music sound reinforcement. The specifications call for several microphones, a mixing console, signal conditioning and processing, power amplifiers and loudspeakers suitable for speech and music reinforcement chosen for adequate coverage of the seating areas.

3.2. Several microphone points to be provided in wall and floor boxes for microphones as indicated in the drawings.

3.3. All microphone points to be wired to jack strips (patch bays). Microphone points will be assigned in a completely flexible manner to the input of the console by appropriate patching. Selected jack points to be normalled through as required by the Owner/ engineer.

3.4. A 24 channel mixing console will be used. The various outputs from the console will be used simultaneously to feed various circuits for the main high level loudspeaker assemblies, monitoring, foldback, recording feed, etc.

3.5. The sound is provided through specific throw line array loudspeakers aiming the throw at each portion of the auditorium. The line array modules designed for, shall be 3-way, to handle and reproduce the high, mid and low frequency sound seamlessly.

3.6. To reproduce the ultra-low frequencies in recorded music and DVD projection sound, sub-woofers have been provided.

3.7. Several power amplifiers drive the complement of the main, sub-woofer, fold-back and green-room loudspeakers.

3.8. All equipment will be housed in 19” DIN equipment racks and line level inputs and outputs of all the equipment would be brought on to jack strips for patching, testing and maintenance purposes.

3.9. A stage monitoring/ fold back speaker chain has been provided with the distribution of outlets as shown in drawing.

3.10. All microphone and loudspeaker cabling will run in steel conduits. Cables will be as specified.

3.11. The contractor would be responsible for the installation, testing and commissioning of the entire system.

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4. Design Guidelines While offering specific equipment, the following shall be borne in mind:

4.1. The equipment and system shall be of modular design to facilitate both expansion and service, and shall be completely solid state. The equipment shall be of simple and sturdy design, chosen with long term reliability in mind and corresponding parts shall be made interchangeable wherever possible having flexibility of design.

4.2. The outgoing program from the control room shall be controlled by the operator. The main control consoles shall therefore incorporate comprehensive visual and aural monitoring facilities, and shall be user friendly.

4.3. Input/ output connection for all components are required to be brought onto two rows jack fields(pre-wired) for ease of maintenance. Permanently connected equipment will be ‘normalled’ through the jack and patch cords with plugs provided for special inter-connection wherever necessary.

4.4. All terminations at any point of the system will be soldered on terminal strips. 4.5. All microphone wiring and line level wiring upto and including the mixing console

would be screened and PVC jacketed cable consisting of balanced two wire plus shield. All wiring to be balanced with respect to ground.

4.6. The entire sound reinforcement system shall be capable of being monitored on the computer using single window OEM software on the PC.

5. Performance

A professional sound reinforcement system has been proposed.. The performance of the system after installation must meet the following specifications. 5.1. Maximum program (continuous average) level in the listening areas 102dB ±

3dB SPL. 5.2. The frequency response of the system should confirm to recommended house

curve for theatre from 50Hz to 12kHz. The loudspeakers should be aimed and aligned for a better than +3dB uniformity of coverage, front to back and side to side, in the range of 250Hz to 6kHz.

5.3. The system to be equalized in 1/3 octaves using a real time analyzer so as to give maximum acoustic gain. The system response must also be equalized to confirm to recommended house curve.

5.4. Hum, noise or distortion at maximum gain settings should not exceed 35dB SPL in the listening areas.

6. Scope work 6.1. The contract is for the supply of all necessary materials and new equipment,

detailed design and preparation of all necessary drawings, and the testing, installation, and commissioning of the sound and projection systems along with the wiring of the equipment in the conduits.


6.2. All necessary materials & equipment, hardware & software and the installation, testing and commissioning of the equipment as specified complete with all necessary electric wiring to connect the sources of power supply to the equipment.

6.3. Spares as listed plus any additional spares recommended by the manufacturers

for five years operation.

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7. Contractor's Responsibility

7.1. It is the intention of the specifications to specify the principal performance and requirements for the sound and projection systems.

7.2. The tenderer shall fulfill the performance design criteria of providing high quality

sound reinforcement system catering to speech and music, providing an average continuous peak SPL of 102± 3dB throughout the premises of the Auditorium, with a minimum RaSTI/ STI level of 0.6, as a clarity of speech index.

7.3. In addition to submitting his drawings for approval, the contractor shall, whenever

called upon to do so, submit for the approval of the Engineer his calculations justifying his various proposals together with such explanations, substantiations, and other data that may be necessary. If required to do so by the Engineer, he shall amend the basis of his calculations and shall resubmit them together with fresh proposals based on the revised calculations.

7.4. The tenderer shall be required to submit basic system drawings with control

philosophy and system description alongwith there offer. 7.5 The Contractor shall submit the sound system design along with EASE

mappings to authenticate the performance of the system provided. 7.6 Integration of the complete system shall be the responsibility of the tenderer.

Tender shall supply all required compatible items to make system complete for successful integration & operation.


All special fixtures, control devices, hardware, software, system accessories etc. not specifically mentioned but that are usual for the safety and efficiency of the audio and video equipment shall be included in the supply without any extra cost to the contract.


The work shall be carried out according to specifications. Any deviation from these specifications either on account of manufacturing practices or for any other reason including the measures for additional efficiency and/or safety of the equipment under clause 3.0 above shall be clearly stated in a covering letter explaining in detail each and every departure the contractor proposes to make from the tender giving reasons thereof. Unless specifically mentioned it will be assumed that the tenderer agrees to supply all equipment and complete the work exactly as specified therein and as shown in the drawings in its entirety. All deviations shall be subject to the approval of the engineer.

10. Installation of Equipment

The layout and installation of the equipment shall be planned and carried out conforming to the best engineering and international practices. The successful tenderer shall furnish drawings showing complete layout of the equipment as also layout showing the location of the consoles etc. The installation of the various equipment and wiring of these units shall be such that these are easily accessible for maintenance and routine check-up.

11. Wiring of the Entire System

11.1. The wiring of the entire system shall be neat and conforming to good engineering practices. The successful tenderer shall furnish wiring layout

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scheme (conforming to layout of conduits already laid) including specifications for wires and cables he proposes to use for -

11.1.1. Audio wiring. 11.1.2. Wiring for loudspeakers 11.1.3. Power supply to the technical equipment. 11.1.4. Earthing system.


The tenderer shall supply a complete list with quantities of major items of equipment together with detailed descriptive literature including photographs and performance characteristics pertaining to the equipment offered.

13. Training/Technical Data

The successful tenderer shall be required to impart training in the use and maintenance of equipment as also furnish the following data:

13.1 Overall audio-video system design offered including jack/patch points. 13.2. Detailed shop drawings and wiring installation scheme for all equipment and

entire system. 13.3. Detailed circuit diagrams of individual equipment 13.4. Factory test reports. 13.5. Manuals and instructions for installation, operation and maintenance of all

equipment and the sound and projection system. Minimum of four sets of such manuals and instructions are required for each equipment, to be furnished in bound volumes.

13.6. A final drawing showing layout of the equipment with a soft copy of the same 13.7 Real time sound simulation mapping on EASE software.

14. Inside Temperatures and Humidity All equipment should be capable of performing satisfactorily in an ambient temperature of

45 deg C and 80% humidity. 15. Standards The materials used in the equipment shall conform to and be supplied in accordance with

the latest revision of relevant IS, BS, DIN or IEC standards or equivalent current at the time of tender. All the work shall also conform to the requirements of local codes and regulations. Tenderer should justify the particular standard chosen with reference to the operating context.

16. Name Plates Instruction plates, name plates and labels shall be provided before commissioning of all

equipment requiring indication of operation and should be such size as to be readable at operational levels. The language of all such plates shall be in English. Plastic or screen printed labels shall not be acceptable.

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17. AUDIO AND VIDEO EQUIPMENTS: A) Projector

Panel size

21.6 mm (0.85") diagonal, 16:9 aspect ratio

Display method

DLP™ chip x 3 (R, G, B), DLP™ projection system

DLP chip:

Pixels

1,049,088 (1,366 x 768) x 3, total of 3,147,264 pixels

Lamp: 355 W UHM lamp x 2 (dual lamp system) Brightness: 9,600 lumens (dual lamp, high mode) Contrast ratio: 10,000:1 (full on/full off) Resolution: 1,366 x 768 pixels Lens: Optional powered zoom/focus lenses

Screen size: 1.78-15.24 m (70-600 inches)*(16:9 aspect ratio) Optical axis shift: Vertical: ±70% (±60% with the ET-D75LE6) from center of screen, powered, Horizontal: ±30% (±20% with the ET-D75LE6) from center of screen, powered

HDMI 19-pin x 1

HDMI IN

Deep Colour, compatible with HDCP, 480p, 576p, 720/60p, 720/50p, 1080/60i, 1080/50i, 1080/24p, 1080/24sF, 1080/25p, 1080/30p, 1080/60p, 1080/50p (non-interlaced signals only), VGA (640 x 480)-WUXGA*3 (1,920 x 1,200), dot clock: 25 - 162 MHz DVI-D 24-pin x 1

Terminals

DVI-D IN

DVI 1.0 compliant, compatible with HDCP, compatible with single link only, 480p, 576p, 720/60p, 720/50p, 1080/60i, 1080/50i, 1080/24p, 1080/24sF, 1080/25p,

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1080/30p, 1080/60p, 1080/50p, VGA (640 x 480)-WUXGA*3 (1,920 x 1,200), compatible with non-interlaced signals only, dot clock: 25 -162 MHz

RGB 1 IN

BNC x 5 (RGB/YPBPR/YCBCR x 1)

RGB 2 IN

D-Sub HD 15-pin (female) x 1 (RGB/YPBPR/YCBCR x 1)

VIDEO IN BNC x 1 (composite video)

S-VIDEO IN Mini DIN 4-pin x 1 (S-Video)

SERIAL IN

D-sub 9-pin (female) x 1 (for external control, RS-232C compliant)

SERIAL OUT

D-sub 9-pin (male) x 1 (for link control, RS-232C compliant)

REMOTE 1 IN M3 jack x 1 (for wired remote control)

REMOTE 1 OUT M3 jack x 1 (for link control)

REMOTE 2 IN

D-sub 9-pin (female) x 1 (for external control, contact control)

LAN

RJ-45 x 1 (for network connection, 10Base-T/100Base-TX, compliant

Vertical: ±40° Keystone correction range

horizontal: ±15°

Installation Ceiling/floor, front/rear

B) Lens for Projector

Able to produce image of 400" Diagonal from a distance of 24m-46m for 16:9 Aspect Ratio

C) Motorised Screen

Plenum rated case (UL approved "Suitable for Use in Environmental Air Space") 16:9 Aspect ratio. Motorised operation. Tab Tensioned. 3 position Switch

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M1300 Surface Black Borders: Image area framed with black on all four sides. 12" black drop at top of viewing surface (standard). Screen Diagonal: 324"/823 cm Image Area: 406 x 721 cm D) Scalar Input Video Signal

2 composite video 2 S-video 1 component video (interlaced, progressive, or HDTV) 2 RGBHV, RGBS, RGsB

Number/signal type

1 DVI-D digital video (single link) 1 Vp-p for Y of component video and S-video, and for composite video 0.7 Vp-p for RGB and for R-Y and B-Y of component video

Nominal level

0.3 Vp-p for C of S-video

Minimum/maximum levels 0 V to 1.0 Vp-p with no offset

Impedance 75 ohms Horizontal frequency 24 kHz to 100 kHz Vertical frequency 50 Hz to 120 Hz

Resolution range 640 x 480 to 1920 x 1200, 480p, 576p, 720p, 1080i, and 1080p

Return loss <-27 dB @ 5 MHz DC offset (max. allowable) 0.5 V Output Video Signal

Number/signal type Scaled RGBHV, RGBS, RGsB; Y, R-Y, B-Y 1 Vp-p for Y of component video and for G of RGsB

Nominal level 0.7 Vp-p for RGB and for R-Y and B-Y of component video

Minimum/maximum levels 0 V to 1.0 Vp-p Impedance 75 ohms

Vertical frequency

24 Hz, 50 Hz, 59.94 Hz, 60 Hz, or 75 Hz, depending on selected output resolution

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Return loss -21 dB @ 5 MHz

DC offset ±300 mV maximum with input at 0 offset

Video processing Encoder 9 bit digital Decoder 10 bit digital Digital sampling 24 bit, 8 bits per

colour; 13.5 MHz standard (video), 194 MHz standard (RGB)

Colors 16.78 million Audio input Number/signal type 8 stereo, unbalanced Impedance >10k ohms unbalanced,

DC coupled Nominal level +4 dBu (1.23 Vrms), -10

dBV (316 mVrms) Maximum level +10.4 dBu, (unbalanced)

at 1% THD+N Audio output Number/signal type 1 stereo, unbalanced Impedance 50 ohms unbalanced,

100 ohms balanced >+16 dBu, balanced at 1% THD+N

Maximum level (Hi-Z)

>+10 dBu, unbalanced at 1% THD+N >+10 dBu, balanced at 1% THD+N

Maximum level (600 ohm)

>+7 dBu, unbalanced at 1% THD+N

Control/remote — decoder/scaler Serial control port RS-232, female 9-pin D

connector Baud rate and protocol 9600 baud, 8 data bits, 1

stop bit, no parity

E) Professional DVD Player Audio section Analog output: Audio out: -8 dB/1 kØ Digital output*: Digital out (optical): -21 dBm to -15 dBm (660 nm ± 30 nm)

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* Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround (with sampling frequency - 32 kHz, 44.1 kHz, 48 kHz) Video section

Video system: NTSC Horizontal Resolution: 500 lines Signal-to-Noise Ratio: 64 dB Video output level Composite: 1.0 V(p-p)/75Ø S-video-Y: 1.0 V(p-p)/75Ø S-video-C: 0.286 V(p-p)/75Ø Component-Y: 1.0 V(p-p)/75Ø Component-Pb/Pr: 0.7 V(p-p)/75Ø HDMI : HDMI Output (Ver. 1.1): HDMI RS-232C: Serial command: 9-Pin D-SUB

F) Presentation Points Computer video: 15-pin female to five BNC on staggered length pigtails 8-12" Computer audio: 3.5 mm stereo mini jack barrel Available in black or white Signals passed through unprocessed One gang size Metal body

G) Wireless Vocal Receiver: Carrier frequency range: 500 to 530, 570 to 600, 600 to 630, 650 to 680, 680 to 710, 720 to 750, 790 to 820 and 835 to 865 MHz Audio bandwidth: 35 to 20,000 Hz Signal/noise ratio :120 dB(A) THD: <0.3% (at 1 kHz)

Modulation : FM

Audio outputs: balanced XLR and unbalanced TS 1/4" jack, balanced level switchable to -30 or 0 dBm

Body Pack Transmitter: Carrier frequency range: 500 to 530, 570 to 600, 600 to 630, 650 to 680, 680 to 710, 720 to 750, 790 to 820 and 835 to 865 MHz Audio bandwidth : 35-20,000 Hz THD : <0.7% typical at rated deviation/1 kHz

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Signal/noise ratio: 120 dB(A) Modulation : FM Selectable channels : 1200 Max. channels for multichannel operation : > 24 with presets

RF output power: 50 mW max. (ERP) Battery life : 1.5 V AA size dry battery: 6 hours; 1.2 V NiMH, 2100 mAh AA size rechargeable battery: 8 hrs.

H) Wireless Lapel Presenter Set Receiver: Carrier frequency range: 500 to 530, 570 to 600, 600 to 630, 650 to 680, 680 to 710, 720 to 750, 790 to 820 and 835 to 865 MHz Audio bandwidth: 35 to 20,000 Hz Signal/noise ratio :120 dB(A) THD: <0.3% (at 1 kHz) Modulation : FM Audio outputs: balanced XLR and unbalanced TS 1/4" jack, balanced level switchable to -30 or 0 dBm Body Pack Transmitter: Carrier frequency range: 500 to 530, 570 to 600, 600 to 630, 650 to 680, 680 to 710, 720 to 750, 790 to 820 and 835 to 865 MHz Audio bandwidth : 35-20,000 Hz THD : <0.7% typical at rated deviation/1 kHz Signal/noise ratio: 120 dB(A) Modulation : FM Selectable channels : 1200

Max. channels for multichannel operation : > 24 with presets RF output power: 50 mW max. (ERP)

Battery life : 1.5 V AA size dry battery: 6 hours; 1.2 V NiMH, 2100 mAh AA size rechargeable battery: 8 hrs.

I) Lavlier Microphone: Polar Pattern: Cardiod

J) Vocal Microphone Polar pattern : supercardioid Frequency range: 70 Hz to 20 kHz

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Sensitivity : 2.6 mV/Pa (-52 dBV) Max. SPL: 147/156 dB SPL (for 1% / 3% THD) Equivalent noise level: 18 dB-A Impedance: <= 600 ohms Recommended load impedance: >= 2000 ohms Connector: 3-pin XLR

K) Manual Mixer No of inputs/Outputs: 16 Channel mono, Stereo Inputs- 2 Ch, Sub Group- 4(paired sends),Maste4r Outputs- L/R + Mono, EQ- 2fixed, 2Swept, Filters- 100Hz HPF,AUX Sends- 6(4Pre/Post), FX Returns- 2 Frequency response: XLR input to any output : +0/-1dB, 20Hz-20kHz T.H.D. & noise: All measurements at +10dBu output, 30dB gain. XLR input to Direct output: <0.007% @ 1kHz XLR input to Mix output: <0.008% @ 1kHz

Mic input: E.I.N. 22Hz-22kHz bandwidth, unweighted : <-128dBu (150Ω source)

Mic gain: Min: 5dB Max: 60dB Bus noise: Mix output, input faders @ -∞, Mix fader 0dB 16 channels routed: <-88dBu Group output, input faders @ -∞, Group fader 0dB 16 channels routed : <-88dBu Aux output, input sends @ -∞, Aux master 0dB 16 channels routed : <-91dBu

Crosstalk @ 1kHz: Input channel muting : >98dB Input fader cutoff : >98dB Input pan pot isolation: >82dB Mix routing isolation: >98dB Group routing isolation : >98dB Adjacent channel isolation: >100dB Group-Mix crosstalk : <-84dB Aux send off: <-94dB CMRR: Mono input, measured at max gain : typically 80dB @ 1kHz Input & output levels: Input channel mic input : +15dBu max Input channel line input : +30dBu max Stereo inputs & insert returns : +20dBu max All outputs : +20dBu max Nominal operating level : 0dBu Headphone power : 2 x 250mW into 200Ω phones

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Input & output impedances: Mic input: 2kΩ Line inputs : >10kΩ Input channel insert return: 5kΩ (with EQ in) Mix, Group, Aux outputs : 150Ω Insert sends : 75Ω Recommended headphone impedance: 50-600Ω High pass filter (Mono input): 100Hz, 18dB per octave Metering: 6 tri-colour 12-segment LED bar-graphs

L) Headphone Type: semi-open, dynamic headphones Sensitivity :112 dB/V Frequency range: 18 to 22,000 Hz Rated impedance : 32 ohms Max. input power: 200 mW Cable: 3 m single-sided (99,9% oxygen-free) Connector: stereo mini plug Adapter: convertible jack plug (1/8" to 1/4")

M) Line Array Speakers Power Rating: 800 W / 1600 W / 3200 W Frequency Range: 57 Hz - 20 kHz (-10 dB) Coverage Pattern : 100 x 15 nominal Crossover Modes : Bi-amp / passive, externally switchable Crossover Frequency : 132 dB SPL peak 1.2 kHz System Maximum SPL : Passive: 130 dB SPL peak , Bi-amp LF: 130 dB SPL peak

System Sensitivity (1w @ 1m ) : Passive: 95 dB SPL Bi-amp LF: 95 dB SPL Bi-amp HF: 114 dB SPL LF Driver:1 x 305 mm (12 in) Differential Drive woofer with neodymium magnet, dual voice-coils, and dual magnetic gaps.

HF Driver : 3 x 38 mm (1.5 in) voice-coil, neodymium compression driver

Nominal Impedance : Passive: 8 ohm Bi-amp LF: 8 ohm Bi-amp HF: 8 ohm

Suspension / Mounting : line array frame kit

N)Subwoofer Power Rating : 800 W / 1600 W / 3200 W Frequency Response : 34 Hz – 220 Hz

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Recommended Crossover Frequencies :80 Hz, 24 dB / octave HPF 80 Hz, 24 dB / octave LPF System Maximum SPL : 130 dB SPL peak System Sensitivity : 95 dB SPL LF Driver : 1 x 457 mm (18 in) Differential Drive woofer Nominal Impedance : 8 ohms

O) Line Array Suspending Frame

Line array Suspending frame supporting upto 6 line array speakers & subwoofers in any combination.

Includes: 1 x center frame 2 x side arms 4 x quick release pins 2 x drop levers 2 x 3/8" shackles

P) Stage Monitors Power Rating : 800 W / 1600 W / 3200W Frequency Range : 60 Hz - 20 kHz Frequency Response : 70 Hz - 20 kHz Coverage Pattern : 50° x 90° nominal Crossover Modes : Passive / Bi-amp Crossover Frequency : 1.1 kHz System Maximum SPL : 127 dB SPL continuous (133 dB SPL peak) System Sensitivity (1w @ 1m) : 98 dB SPL LF Driver : 1 x380 mm (15 in) Differential Drive woofer 8 Ohms HF Driver : 1 x100 mm (4.0 inch) diameter voice coil, 38 mm (1.5 inch) exit, neodymium magnet compression driver 8 Ohms Nominal Impedance : 8 ohms

Q) Surround Speaker Frequency Range (-10 dB): 60 Hz - 19 kHz Frequency Response (±3 dB) 75 Hz - 17 kHz

Power Rating 350 watts continuous pink noise 1400 watts peak

Sensitivity (1W/1m) 99 dB-SPL half-space / wall-mounted

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97 dB-SPL free-field Maximum Peak SPL 130 dB/1m Nominal Impedance 8 ohms

Hor. Coverage Angle (-6 dB) 100° averaged 400 Hz to 12 kHz

Vert. Coverage Angle (-6 dB) 80° averaged 400 Hz to 12 kHz

Directivity Factor (Q) 7 averaged 400 Hz to 12 kHz

Directivity Index (DI) 8.4 dB averaged 400 Hz to 12 kHz

Crossover Frequency 1.4 kHz 250 mm (10 in)

Low Freq Transducer Nominal Diameter 64 mm (2.5 in) voice coil 25 mm (1 in) exit

High Freq Transducer Nominal Diameter 38 mm (1.5 in) voice coil

Downward Firing Angle Nominal 20° when mounted flush on back panel

R) Surround Sound Processor 7.1 Balanced Line Level XLR Outputs (+4dB/- 10dB - switchable) Balanced XLR Auxiliary Audio Input (+4dB/- 10dB - switchable) HDMI Video Switching (ver. 1.1) (2 sources) 192kHz/24 bit Crystal® DAC for all 8 Channels 32 bit Digital Surround Processing Chipsets Set-up menu via Video Outputs (Composite, S-Video, Component) Video Convert Feature (Composite/S-Video to Component)

Dolby Digital EX, Dolby Digital, DTS ES (Discrete 6.1, Matrix 6.1, Neo:6) Decoding Dolby Pro Logic IIx (Movie, Music, Game) Circle Surround II (Movie, Music, Mono) HDCD Decoding RS-232C Terminal for System Control

S) Amplifier-1 Frequency Response (at 1 watt into 4 ohms, 20Hz - 20 kHz) +0/–1 dB Signal to Noise Ratio (below rated 8-ohm power at 1 kHz, A-weighted) 100 dB Damping Factor (8 ohm): 20 Hz to 400 Hz > 500

Input is electronically balanced and employs

Input Stage precision 1% resistors

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11.93A

AC Line Current

At idle: Draws no more than 45 watts.

Crosstalk (below rated power) 20 Hz to 1 kHz > 70 dB

Input Impedance (nominal) 20 kilohms balanced, 10

kilohms unbalanced Load impedance (note: safe with all types of loads) Dual 2-8 ohms Bridge mono 4-16 ohms Voltage Gain (at 1 kHz) 32.9 dB Sensitivity (at 8 ohm rated output) 1.4V

Operating Temperature

0° C to 40° C at 95% relative humidity (non-

condensing) AC Line Voltage and Frequency Configurations Available (± 10%)

100V, 120V–240V, 50/60 Hz

Ventilation Flow-through ventilation

from front to back

Cooling Heat sinks and

proportional-speed fan Power Output: Stereo, 2 ohms (per ch.): 950W Stereo, 4 ohms (per ch.): 770W Stereo, 8 ohms (per ch.): 460W Bridge-Mono, 4 ohms: 1800W Bridge-Mono, 8 ohms: 1500W

T) Amplifier-2 Power Output: Stereo, 2 ohms (per ch.): 3000W Stereo, 4 ohms (per ch.): 2100W Stereo, 8 ohms (per ch.): 1200W Bridge-Mono, 4 ohms: 6000W Bridge-Mono, 8 ohms: 4200W Sensitivity (volts RMS) for full rated power at 4 ohms: 1.4V Frequency Response (at 1 watt into 4 ohms, 20Hz - 20 kHz): +0/–1 dB

Signal to Noise Ratio (below rated 1 kHz power at 8 ohms), A-weighted: 103 dB Damping Factor (8 ohm): 20 Hz to 400 Hz: > 500 Input Stage : Input is electronically balanced and employs precision 1% resistors.

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Crosstalk (below rated power) 20 Hz to 1 kHz : > 70 dB Maximum Input Signal : +22 dBu typical Ventilation: Flow-through ventilation from front to back Cooling: Heat sinks and proportional-speed fan

U) Graphic Equalizer Filter Type Graphic Number of Channels 2

Inputs 2 x XLR, 2 x 1/4" TRS

phone, barrier strip

Output 2 x XLR, 2 x 1/4" TRS

phone, barrier strip Maximum Input Level +21dBm

Frequency Bands 31 x 2, 20Hz to 20kHz

ISO spacing Bandwidth 1/3 octave

Range (Boost/Cut) +/-6dB or +/-15dB

selectable Maximum Output Level +21dBm Frequency Response 10Hz to 50kHz

>120dB unweighted, noise reduction in

>112dB unweighted, noise reduction out (+/-6dB range)

Dynamic Range


>102dB unweighted, noise reduction in


Noise


Dimensions 3U rack, 7 15/16" deep

Specialties Graphic

equalizer/limiter with Type III noise reduction

V) Speaker Management Inputs Number of Inputs: (2) Line inputs. (1) RTA Mic input Connectors: (2) Female XLR line inputs. XLR RTA Mic input Type: Electronically balanced/RF filtered

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Impedance:>40k ohm Maximum Input Level: +30dBu with input jumpers in +30 position CMRR: >45 dB RTA Mic Phantom Voltage: +15 VDC RTA Mic ETN:<-110 dBu, 22 Hz - 22 kHz, 150 ohm Analog Outputs Number of Outputs: 6 Connectors: Male XLR Type: Electronically balanced, RF filtered Impedance:120ohm Max Output Level: +22dBu A/D Performance Type: dbx Type IV™ Conversion System Dynamic Range line: >114 dB A-weighted, >112 dB unweighted Type IV™ dynamic range: >119 dB, A-weighted, 22kHz BW >117 dB, A-weighted, 22kHz BW Sample Rate: 48kHz D/A Performance Dynamic Range: 112 dB A-unweighted, 110 dB unweighted System Performance Dynamic Range: 110 dB unweighted, >107 dB weighted THD + Noise:0.002% typical at +4 dBu, 1 kHz, 0 dB input gain Frequency Response: 20 Hz - 20 kHz, +/-0.5 dB Inter-channel Crosstalk: >110 dB, 120 dB typical Crosstalk input-output: >100 dB

W) Digital Signal Processor 12 Analog Inputs (with 48v Phantom Power per Channel)

8 Analog Outputs

Configurable Signal Processing Rich Palette of Processing and Logic Objects 48 Channel, Low Latency, Fault Tolerant Digital Audio Bus Clear Front Panel LED Indication Bi-Directional Locate Functionality 12 Control Inputs and 6 Logic Outputs for GPIO

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X) Equipment Rack 42U Equipment Rack 42 U Professional Equipment Rack With Glass window 15 Amp Power Ports Caster Locks Cooling Fans Cable manager DVD Placing PLATEFORM Rack mount channels with Hardware sets

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C) TECHNICAL SPECIFICATION FOR STAGE LIGHTING SYSTEM

1. General


1.2. The system shall be designed in accordance with the appropriate IS, BS, DIN or

IEC recommendations. 2. Functional Requirements To provide a flexible, high quality stage lighting system in the Auditorium. 3. Proposed Design Stage Lighting

3.1. The stage lighting system in the hall is required to light the stage area for theatrical performances.

3.2. A mix of several types of theatre lights has been proposed to provide adequate lighting levels and for colors and effects.

3.3. Lights are suspended with hangers from steel tubular supports Light bars), and side ladder frames as shown in the drawing. The light bar and side ladders are fixed.

3.4. All light bars are provided with an adequate number of 3 pole metal clad power outlets.

3.5. Power outlets (points) from fixed light bars, foot-light points, and skirting level sockets are wired individually to positions on the lighting patch panel.

3.6. Power outlets (points) from side ladders, are individually connected to trailing cables terminated in metal clad plugs. Power outlets are provided on the stage walls wired individually to positions on the patch panel. The trailing cable plugs are plugged into these power outlets on the walls.

3.7. Additional light points, also terminated in the patch panel, have been provided at skirting level. These will serve any additional portable lighting that may be required.

3.8. Any dimmer circuit can be patched to any one light points. Each light point to be protected by a 1OA MCB in the patch panel. All patching to be ‘soft patch’ type, with each light connected to an individual dimmer.

3.9. Each electronic dimmer circuit to have an analogue control signal input. 3.10. Additionally halogen flood lights have been provided for general lighting of the

stage. Additional power outlets have been provided on the light bars for this purpose. These power outlets are directly connected to mains supply via switches provided both backstage and in the control room.

3.11. All the power equipment is located on the stage as shown in the drawing. A lighting controller console has been provided in the control room with a control cable interconnecting the control console with the power equipment.

3.12. The controller has features of memorizing several 'scenes' and 'pages' and has facilities for 'chase', 'audio input' etc.

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4. Design Guidelines While offering specific equipment, the following shall be bome in mind:

4.1. The equipment and system shall be of modular design to facilitate both expansion and service, and shall be completely solid state. The equipment shall be of simple and sturdy design, chosen with long term reliability in mind and corresponding parts shall be made interchangeable wherever possible having flexibility of design.

4.2. Safety is of the utmost importance and all equipment shall be solidly grounded with a separate identifiable earth conductor to an earth bus in the dimmer rack.

4.3. All terminations at any point of the system will be with crimped terminals on

terminal strips. 4.4. All cables will be laid in steel trunking or conduits. The use of flexible conduits

will not be permitted. All cable entries to equipment will be property glanded to relieve any stress from the conductors and to prevent any vemin or insects from entering the equipment. All ventilation openings in equipment shall be backed by fine steel wire mesh.

4.5. All single phase circuits will be 3 wire - Phase, Neutral and Earth. The Earth conductor will be PVC insulated, Green in colour, and at least 1.5 sq mm stranded copper.

5. Performance

A high quality lighting system has been proposed. The performance of the system after installation must meet the following specifications. 5.1. Insulation resistance of lighting circuits not less than 20 Megohm.. 5.2. No audible RFI when tested with a portable AM/FM receiver. 5.3. No interference in audio or video circuits at any dimmer setting. Complete system control to be demonstrated for all functions.

6. Scope work 6.1. The contract is for the supply of all necessary materials and new equipment,

detailed design and preparation of all necessary drawings, and the testing, installation, and commissioning of the stage lighting systems along with the wiring of the equipment in the existing conduits.


6.2. All necessary materials and equipment and the installation, testing and

commissioning of the equipment as specified complete with all necessary electric wiring to connect the sources of power supply to the equipment.

6.3. Spares as listed plus any additional spares recommended by the manufacturers

for five years operation. 7. Contractor's Responsibility

7.1. It is the intention of the specifications to specify the principal performance and requirements for the stage lighting systems.

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7.2. It is not the intention of this part of the specifications to cover in detail type, makes and design of the different equipment components. It shall be entirely the responsibility of the tenderer to design the equipment for the stage lighting systems which shall meet all the specified requirements and to select different components which are adequate in capacity and of the best available quality.

7.3. In addition to submitting his drawings for approval, the contractor shall, whenever

called upon to do so, submit for the approval of the Engineer his calculations justifying his various proposals together with such explanations, substantiations, and other data that may be necessary. If required to do so by the Engineer, he shall amend the basis of his calculations and shall resubmit them together with fresh proposals based on the revised calculations.

7.4. The tenderer shall be required to submit basic system drawings with control

philosophy and system description alongwith there offer. 7.5 Integration of the complete system shall be the responsibility of the tenderer.

Tender shall supply all required compatible items to make system complete for successful integration & operation.


All special fixtures, control devices etc. not specifically mentioned but that are usual for the safety and efficiency of the lighting equipment shall be included in the supply without any extra cost to the contract.


The work shall be carried out according to specifications. Any deviation from these specifications either on account of manufacturing practices or for any other reason including the measures for additional efficiency and/or safety of the equipment shall be clearly stated in a covering letter explaining in detail each and every departure the contractor proposes to make from the tender giving reasons thereof. Unless specifically mentioned it will be assumed that the tenderer agrees to supply all equipment and complete the work exactly as specified therein and as shown in the drawings in its entirety. All deviations shall be subject to the approval of the engineer.

10. Installation of Equipment

The layout and installation of the equipment shall be planned and carried out conforming to the best engineering and international practices. The successful tenderer shall furnish drawings showing complete layout of the equipment as also layout showing the location of the consoles etc. The installation of the various equipment and wiring of these units shall be such that these are easily accessible for maintenance and routine check-up.

11. Wiring of the Entire System

11.1. The wiring of the entire system shall be neat and conforming to good engineering practices. The successful tenderer shall furnish wiring layout scheme (conforming to layout of conduits already laid) including specifications for wires and cables he proposes to use for -

11.1.1. Power wiring for light points, 11.1.2. Power wiring for main incomers

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11.1.3. Control wiring 11.1.4. Earthing system.


The tenderer shall supply a complete list with quantities of major items of equipment together with detailed descriptive literature including photographs and performance characteristics pertaining to the equipment offered.

13. Training/Technical Data

The successful tenderer shall be required to impart training in the use and maintenance of equipment as also furnishes the following data:

13.1 Overall lighting system design offered including jack/patch points. 13.2. Detailed shop drawings and wiring installation scheme for all equipment and

entire system. 13.3. Detailed circuit diagrams of individual equipment 13.4. Factory test reports. 13.5. Manuals and instructions for installation, operation and maintenance of all

equipment and the stage lighting system. Minimum of four sets of such manuals and instructions are required for each equipment, to be furnished in bound volumes.

13.6. A final drawing showing layout of the equipment with a soft copy of the same 14. Inside Temperatures and Humidity All equipment should be capable of performing satisfactorily in an ambient temperature of

45 deg C and 60% humidity. 15. Standards The materials used in the equipment shall conform to and be supplied in accordance with

the latest revision of relevant IS, BS, DIN or IEC standards or equivalent current at the time of tender. All the work shall also conform to the requirements of local codes and regulations. Tenderers should justify the particular standard chosen with reference to the operating context.

16. Name Plates Instruction plates, name plates and labels shall be provided before commissioning of all

equipment requiring indication of operation and should be such size as to be readable at operational levels. The language of all such plates shall be in English. Plastic or screen printed labels shall not be acceptable.

17. Technical Specification

2000W Planoconvex Spot Light complete with 2000W Halogen Bipin CP-41 lamp, G-38 base socket, spherical anodized reflector, 200 mm dia Planoconvex lens, rear sliding knob, yoke, color frame & suitable clamp

1000W Halogen Planoconvex spot light complete with1000 W Halogen Bipin T-11 lamp, spherical anodised reflector, imported socket, 150mm dia plano-convex lens, bottom sliding knob, yoke, colour frame & suitable clamp

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1000W Halogen Fresnel light consisting of 1000W Halogen Bipin T-11 lamp, 150mm dia imported Fresnel lens, Imported socket, bottom sliding knob, yoke, colour frame & suitable clamp. 1000 W Halogen profile light consisting of 2 nos. 150mm dia PC lenses, imported socket, ellipsoidal anodized aluminum reflector, 1000W halogen BipinT-11 lamp, yoke color frame & suitable clamp

1000W, 240 Volt, PAR Sealed Beam Light with CRC Sheet Metal and aluminum die casting, mat black color, yoke & clamp

1000W Halogen Cyclorama Flood Light with 1000W Halogen tube. Aluminum anodized reflector, 2 nos compressible recessed single contact holders, color frame & suitable clamp 1000 W Halogen light with mash & barndoor consisting of 2nos. single contact compressible holders, yoke, 1000W halogen tube & suitable clamp 50mm dia B class GI pipe to be hung from existing grid or roof structure for side wings, lighting bars. M.S. Pipe Ladders to be provided on sides of the Stage to be fixed on the existing GI pipe or top grid. Made of 50mm x 25mm MS pipe of following Size: - Size: 600 x 2400

- 120W PAR-38 Lamps - 700W Moving Head

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LIST OF INDICATIVE MAKES : The following is the list of products and indicative makes. Bidder is free to propose any other equivalent Make meeting entire Technical Requirements, Specifications along with required details in support of the same. The same would be analyzed and accepted if found suitable after discussion between EPI and bidder. The Makes shall be finalized during Technical evaluation prior to opening of Price-Bids. Bidders are required to offer reputed equipment / component which is strictly meeting technical requirements, enclosed specifications along with NIT and other relevant / latest applicable Standards & Rules. Preferred Vendors: Speaker (Line Array Speaker, Subwoofer,

Line Array Suspending Frame, Stage Monitor,

Surround Speaker) and Accessories

: JBL/Qsc/EV/Martin Audio

Surround Sound Processor : Denon/Harmon Kardon/Lexicon

Headphones : Sennheiser/AKG

Amplifier : Crown/Qsc/EV/Martin Audio

Manual Mixer : Soundcraft/Allen & Heath/Yamaha

Speaker Management system : Qsc/Dbx/Lexicon

Graphic Equalizer : dbx/Lexicon/Qsc/Bosch

Digital Signal Processor : BSS, Biamp, Clearone

Equipment Rack : MiddleAtlanttic/Valrack

Microphone and Accessories : Extron/Kramer/Crestron

Projector : Panasonic/ Christie/Barco

Projection Lens : Panasonic/ Christie/Barco

Motorized Screen : Draper/Dalite/DNP

Scalar : Extron/Kramer/Crestron

Video Data Switcher : Crestron/Extron

DVD Recorder : Denon/Tascam/Sony/Samsung

Presentation Points : Extron/Kramer/Crestron

PVC Conduit : BEC/ AKG/ Polycab

MS Conduit : BEC/ AKG/Polycab

PVC insulated multi-stranded copper

conductor of 1.1 KV grade

: Polycab/ KEI/ Batra Hanelay

Modular type switch and sockets : MK/ Legrand/ Clipsal/ Crabtree

Distribution boards : Schneider Electric/ ABB/ SIEMENS/ Legrands

Telephone wire : Delton/Finolex

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Coaxial TV Antenna cable : Comscope or equivalent

Telephone Tag Block : KRONE or equivalent

Stage Lighting (Spot Light, Halogen Profile

Light, Halogen Fresnel Light, Halogen Light

with mash & barndoor, Planoconvex spot light,

PAR Sealed Beam Light, Cyclorama Flood

Lights, CMY Moving Head, Dimmer Rack,

Control Panel, Cross Connecting panel)

: Modern Stage Service/Nemetschek-

Vectorworks/Leonardo

General Lighting : Philips/Decon/Modern Stage Services

Sound Acoustic Door : DNV/Godrej/NEV

Fans : Crompton/ Bajaj/ Orient

Glass wool : Owens Corning/ UP Twiga/DNV

Gypsum Board : Saint Gobain/ Lafarge / India Gypsum

Metal Frame : Saint Gobain/ Lafarge

Auditorium Chairs : Herman Miller/Godrej/Vitra/Steelcase

Wooden Plank for catwalk : Armstrong & equivalent

Acoustical False Ceiling : Armstrong, Nittobo, Durlum India

Plywood : Duro, Greenply, Century, kitply

Laminates : Decolam, Century, Greenlam

Stainless steel Hardware Fittings : Droma, D-line, Hahhle

Anchor Fastener :Hiliti, Bosch, Fisher

Acoustic Mineral Fibre : USG - Radar, Armstrong, 21st Century

Stainless Steel Pipes : SAIL, Jindal

Synthetic Enamel Paint : Asian, Berger, Nerolac

Note : Items which are not mentioned in above list but required at site, shall

be supplied with prior approval of EPI/CDRI.

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LIST OF DRAWINGS FOR TENDER PURPOSE

S. NO.

DESCRIPTION DRAWING NO.

01 ACOUSTICAL DETAIL PLAN 2011/CDRI/LUCKNOW/AUDI/ACO-01

02 ACOUSTICAL DETAIL PLAN AND SECTION

2011/CDRI/LUCKNOW/AUDI/ACO-02

03 FALSE CEILING WITH GENERAL LIGHTING PLAN AND SECTION


04 STAGE LIGHTING DETAIL 2011/CDRI/LUCKNOW/AUDI/ACO-04

05 STAGE AV POINTS 2011/CDRI/LUCKNOW/AUDI/ACO-05

06 STEP LIGHTING, SEATING PLAN AND ELEVATION


07 AUDITORIUM CATWALK LIGHTING DETAIL

CDRI/LKW/499/ALL/06

08 AUDITORIUM CATWALK DETAIL CDRI/LKW/499/ALL/06

09 GENERAL LIGHTING PLAN EL-01

10 AV POINTS PLAN EL-02

11 STEP LIGHTING PLAN EL-03

Documents

TECHNICAL SPECIFICATIONS FOR INTERIOR WORKS FOR AUDITORIUM ...engineeringprojects.com/Tender/UploadFiles/1516_Technical-specification-_582_.pdf · The design eliminates late reflection