SoundCraft GB4 manual

1 GB4 User Guide GB4 User GB4 User GB4 User GB4 User GB4 User Guide Guide Guide Guide Guide[...]

2 GB4 User Guide © Harman International Industries Ltd. 2004, 2005 All rights reserved Parts of the design of this product may be protected by worldwide patents. Part No. ZM0302-02 Soundcraft is a trading division of Harman International Industries Ltd. Information in this manual is subject to change without notice and does not represent a commitm[...]

3 GB4 User Guide Contents Contents Contents Contents Contents Introduction 5 K e y F eatures 6 W arranty 7 Installation 9 SAFETY SYMBOL GUIDE 9 IMPORT ANT SAFETY W ARNINGS 10 Mains Installation 12 WORKING SAFEL Y WITH SOUND 14 Setting Up & T roub leshooting 14 Optional Exter nal P o wer Supply 16 A udio Connector Pinouts 17 Dimensions 18 Bloc k[...]

4 GB4 User Guide NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipmentis operated in a commercial environment. This equipment generates, uses and can radiat[...]

5 GB4 User Guide Intr Intr Intr Intr Intr oduction oduction oduction oduction oduction[...]

6 GB4 User Guide K ey Features Thank you for buying the GB4 mixing console. its main features are: Individually switched 48V phantom power on every mono input module. 8 Aux sends. 4 Group sends (paired). 4 Mute Groups. 7+4 Output Matrix. Limiter on record output. New GB30 mic pre-amp. 4-band GB30 EQ. Integral power supply , with an external power s[...]

7 GB4 User Guide W arranty 1 Soundcraft is a trading division of Harman International Industries Ltd. End User means the person who first puts the equipment into regular operation. Dealer means the person other than Soundcraft (if any) from whom the End User purchased the Equipment, provided such a person is authorised for this purpose by Soundcraf[...]

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9 GB4 User Guide Installa Installa Installa Installa Installa tion tion tion tion tion For your o wn safety and to a void in v alidation of the warranty please read this section carefully . SAFETY SYMBOL GUIDE For your own safety and to avoid invalidation of the warranty all text marked with these symbols should be read carefully . W ARNINGS The li[...]

10 GB4 User Guide IMPOR T ANT SAFETY W ARNINGS THIS UNIT MUST BE EARTHED Under no cir cumstances should the mains ear th be disconnected fr om the mains lead. The wires in the mains lead are coloured in accordance with the following code: Earth: Green and Y ellow (Green/Y ellow - US) Neutral: Blue (White - US) Live: Brown (Black - US) As the colour[...]

11 GB4 User Guide W ARNINGS • Read these instructions. • Keep these instructions. • Heed all warnings. • Follow all instructions. • This unit contains no user serviceable parts. Refer all servicing to a qualified service engineer , through the appropriate Soundcraft dealer . • Clean the apparatus only with a dry cloth. • Do not instal[...]

12 GB4 User Guide General Precautions Avoid storing or using the mixing console in conditions of excessive heat or cold, or in positions where it is likely to be subject to vibration, dust or moisture. Do not use any liquids to clean the fascia of the unit: a soft dry cloth is ideal. Avoid using the console close to strong sources of electromagneti[...]

13 GB4 User Guide Initial Wiring Considerations For optimum performance, it is essential for the earthing system to be clean and noise free, as all signals are referenced to this earth. A central point should be decided on for the main earth point system, and all earths should be 'star fed' from this poin t. It is common electrical practi[...]

14 GB4 User Guide P oints to Remember In all cases, use good quality twin screened audio cable. Check for instability at the output. Always connect both conductors at both ends, and ensure that the screen is only connected at one end. Do not disconnect the mains earth from each piece of equipment. This is needed to provide both safety and screen re[...]

15 GB4 User Guide Setting Up & T roubleshooting Initial set-up Once you have connected up your system (see the sections on connection and wiring earlier in this manual for guidance) you are ready to set initial positions for the controls on your mixer . Set up individual input channel as follows: Connect your sources (microphone, keyboard etc.)[...]

16 GB4 User Guide Me Me Me Me Me t t t t t er er er er er s no s no s no s no s no t sho t sho t sho t sho t sho wing an wing an wing an wing an wing an y signal y signal y signal y signal y signal Has the input gain been set correctly? (see above.) Is the source connected to the appropriate input socket for the level of signal? Do you have somethi[...]

17 GB4 User Guide A udio Connector Pinouts[...]

18 GB4 User Guide Dimensions[...]

19 GB4 User Guide Bloc Bloc Bloc Bloc Bloc k Dia k Dia k Dia k Dia k Dia g g g g g r r r r r ams ams ams ams ams[...]

20 GB4 User Guide Mono Input[...]

21 GB4 User Guide Stereo Input 2 3 1 CHASS CHASS CHASS CHASS +48v LINE MIC +48 0dBu GAIN 10dB 60dB PUSH 2 3 1 LINE MIC 0dBu DETECT PEAK HMID -15dB +15dB HF -15dB -15dB LF +15dB +15dB LMID EQ 0dBu HF LMID HMID LF 0dBu LR MONO -15dB +15dB AUX8_PST AUX8_PRE AUX7_PST AUX7_PRE AUX6_PRE AUX6_PST AUX5_PST AUX5_PRE AUX4 AUX2 AUX3 AUX1 PEAK RECTIFIER READIN[...]

22 GB4 User Guide T alkback and Stereo Returns CHASS CHASS CHASS CHASS CHASS GROUPS AUX 1-2 AUX 3-4 AUX 5-6 AUX 7-8 PUSH 2 3 1 T ALKBACK LEVEL TB MIC STE RET 1 L R RET 1 LEVEL GRP1 BUS GRP2 BUS L MIX BUS R MIX BUS 1-2 L-R R STE RET 2 L R MIX BUS GRP4 BUS LEVEL RET 2 L MIX BUS GRP3 BUS L-R 3-4 OFF +38dB 0dBu 0dBu 8dB GAIN AT TO P T ALKBACK STEREO RE[...]

23 GB4 User Guide Group/A ux/Matrix Outputs[...]

24 GB4 User Guide Master Section[...]

25 GB4 User Guide Using Using Using Using Using T T T T T he Console he Console he Console he Console he Console[...]

26 GB4 User Guide Mono Input MIC GAIN (1) adjusts the sensitivity of both mic (XLR) and Line (1/4” jack) inputs. Both inputs are electronically balanced, and are located on the rear connector panel. The PEAK LED (2), monitors two points in the audio path: pre-insert point and post-EQ. The 48V switch (3) applies 48V phantom power to the input XLR.[...]

27 GB4 User Guide Rear Connectors INSERT (1/4" TRS Jack) Ti p Send Signal Ring Return Signal Sleeve Ground LINE INPUT (1/4" TRS Jack) Ti p Signal Hot Ring Signal Cold Sleeve Ground MIC INPUT (3 pin female XLR) Pin 1 Ground Pin 2 Signal Hot Pin 3 Signal Cold DIRECT OUTPUT (1/4" TRS Jack)“ Ti p Signal Hot Ring Signal Cold Sleeve Chas[...]

28 GB4 User Guide Stereo Input STE MIC GAIN (1) adjusts the sensitivity of both pairs of Mic (XLRs) or Line (1/4" jacks) inputs. Both pairs are electronically balanced, and are located on the rear connector panel. The PEAK LED (2), monitors both left and right signals after the gain control. The 48V switch (3) applies 48V phantom power to the [...]

29 GB4 User Guide Rear Connectors MIC INPUT LEFT and RIGHT (3 pin female XLR) Pin 1 Ground Pin 2 Signal Hot Pin 3 Signal Cold LINE INPUT LEFT and RIGHT (1/4" TRS Jacks) Ti p Signal Hot Ring Signal Cold Sleeve Ground MIC L MIC R L R LINE STE1[...]

30 GB4 User Guide 3 8 14 15 11 12 13 9 10 1 6 5 7 4 2 17 30 23 35 41 25 21 16 20 34 31 22 37 39 38 40 36 24 32 29 27 28 26 33 19 18[...]

31 GB4 User Guide Master Section GROUPS Note that the group controls are swappable with the aux 1-4 controls by pressing the GRP/AUX SWAP switches (1). If the contols are swapped the aux and group faders swap function (and their respective AFL buttons) and the group insert point becomes an aux insert point. The 12- segment meter swaps function.The [...]

32 GB4 User Guide L, R & C Outputs Each of the 3 main mix busses, Left, Right and Centre, has its own insert point. These are located on the rear connector panel. Each mix bus has its own Fader (16) following the insert point in the signal path. The post-fader signal for each bus is then routed to the following places: • its main output XLR o[...]

33 GB4 User Guide T alkback The talkback mic input is on the rear connector panel. The level of the talkback mic signal is controlled by the LEVEL pot (35). The signal is the fed to all groups, aux 1-2, aux 3-4, aux 5-6 and aux 7-8 using the appropriate buttons (36). Stereo Returns There are two stereo return channels. The connectors are 1/4” jac[...]

34 GB4 User Guide MIX L, R & C INSERT POINTS (1/4” TRS Jacks) Tip Send Signal Ring Return Signal Sleeve Chassis L & R MONITOR OUTPUTS (1/4” TRS Jacks) Tip Signal Hot Ring Signal Cold Sleeve Chassis GROUP 1-4 OUTPUTS (3-pin male XLRs) Pin 1 Chassis Pin 2 Signal Hot Pin 3 Signal Cold GROUP 1-4 INSERT POINTS (1/4” TRS Jacks) Tip Send Sig[...]

35 GB4 User Guide TYPICAL SPECIFICA TYPICAL SPECIFICA TYPICAL SPECIFICA TYPICAL SPECIFICA TYPICAL SPECIFICA TIONS TIONS TIONS TIONS TIONS Noise Measured RMS, 22Hz to 22kHz Bandwidth Mic E.I.N. @ unity gain,150 Ω source impedance -128dBu Mix Output, 40 inputs routed to mix <-82dBu Group Outputs <-83dBu Aux Outputs <-80dBu Matrix Outputs &[...]

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37 GB4 User Guide Mar Mar Mar Mar Mar k-up Sheets k-up Sheets k-up Sheets k-up Sheets k-up Sheets[...]

38 GB4 User Guide EQ EQ HI MID HF LO MID LF 15 12 9 6 3 3 6 9 12 15 - + 0 15 12 9 6 3 3 6 9 12 15 - + 0 550 13k 3k 80 1.9k 450 15 12 9 6 3 3 6 9 12 15 - + 0 15 12 9 6 3 3 6 9 12 15 - + 0 60dB 30 5 100Hz GAIN MIC 48V PK LINE -20 = 10 5 0 5 10 15 20 30 +16 +8 0 -10 M 1 M 2 M 3 M 4 C 1 2 L R 3 4 PFL 6 0 + 6 0 + 6 0 + 6 0 + 6 0 + 6 0 + 6 0 + 6 0 + AUX1[...]

39 GB4 User Guide 60dB 30 5 GAIN MIC STE 48V PK LINE -20 = HF HM LM LF 15 12 9 6 3 3 6 9 12 15 - + 0 15 12 9 6 3 3 6 9 12 15 - + 0 15 12 9 6 3 3 6 9 12 15 - + 0 15 12 9 6 3 3 6 9 12 15 - + 0 EQ 10 5 0 5 10 15 20 30 +16 +8 0 -10 M 1 M 2 M 3 M 4 C 1 2 L R 3 4 PFL L R MONO L 6 0 + 6 0 + 6 0 + 6 0 + 6 0 + 6 0 + 6 0 + 6 0 + AUX1 AUX2 AUX3 AUX4 AUX5 AUX6[...]

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