SoundCraft GB4 User Manual

GB4 UserGB4 User

GB4 User

GB4 UserGB4 User GuideGuide

Guide

GuideGuide

1GB4 User Guide

IMPORTANT

Please read this manual carefully before using

your mixer for the first time.

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 commitment on the part of the vendor. Soundcraft shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained in this manual.

No part of this manual may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, electrical, mechanical, optical, chemical, including photocopying and recording, for any purpose without the express written permission of Soundcraft.

Harman International Industries Limited Cranborne House Cranborne Road POTTERS BAR Hertfordshire EN6 3JN UK Tel: +44 (0)1707 665000 Fax: +44 (0)1707 660742

http://www.soundcraft.com

2 GB4 User Guide

ContentsContents

Contents

ContentsContents

Introduction 5

Key Features 6 Warranty 7

Installation 9

SAFETY SYMBOL GUIDE 9 IMPORTANT SAFETY WARNINGS 10 Mains Installation 12 WORKING SAFELY WITH SOUND 14 Setting Up & Troubleshooting 14 Optional External Power Supply 16 Audio Connector Pinouts 17 Dimensions 18

Block Diagrams 19

Mono Input 20 Stereo Input 21 Talkback and Stereo Returns 22 Group/Aux/Matrix Outputs 23 Master Section 24

Using The Console 25

Mono Input 26 Stereo Input 28 Master Section 31 Rear Connector Panel 33

Specifications 35

Mark-up Sheets 37

3GB4 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 radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

This Class A digital apparatus meets the requirements of the Canadian Interference-Causing Equipment Regulations.

Cet appareil numérique de la Classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

4 GB4 User Guide

IntrIntr

Intr

IntrIntr

oductionoduction

oduction

oductionoduction

5GB4 User Guide

Key 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 supply link option.

All metal TRS jacks and Neutrik XLRs.

Direct outputs on all mono input channels.

6 GB4 User Guide

Warranty

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 Soundcraft or its accredited Distributor. Equipment means the equipment supplied with this manual.

2 If within the period of twelve months from the date of delivery of the Equipment to

the End User it shall prove defective by reason only of faulty materials and/or workmanship to such an extent that the effectiveness and/or usability thereof is materially affected the Equipment or the defective component should be returned to the Dealer or to Soundcraft and subject to the following conditions the Dealer or Soundcraft will repair or replace the defective components. Any components replaced will become the property of Soundcraft.

3 Any Equipment or component returned will be at the risk of the End User whilst in

transit (both to and from the Dealer or Soundcraft) and postage must be prepaid.

4 This warranty shall only be available if:

a) the Equipment has been properly installed in accordance with instructions contained in Soundcraft's manual; and b) the End User has notified Soundcraft or the Dealer within 14 days of the defect appearing; and c) no persons other than authorised representatives of Soundcraft or the Dealer have effected any replacement of parts maintenance adjustments or repairs to the Equipment; and d) the End User has used the Equipment only for such purposes as Soundcraft recommends, with only such operating supplies as meet Soundcraft's specifications and otherwise in all respects in accordance Soundcraft's recommendations.

5 Defects arising as a result of the following are not covered by this Warranty: faulty or

negligent handling, chemical or electro-chemical or electrical influences, accidental damage, Acts of God, neglect, deficiency in electrical power, air-conditioning or humidity control.

6. The benefit of this Warranty may not be assigned by the End User.

7. End Users who are consumers should note their rights under this Warranty are in addition to and do not affect any other rights to which they may be entitled against the seller of the Equipment.

7GB4 User Guide

8 GB4 User Guide

InstallaInstalla

Installa

InstallaInstalla

tiontion

tion

tiontion

For your own safety and to avoid

invalidation 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.

WARNINGS

The lightning flash with arrThe lightning flash with arr

The lightning flash with arr

The lightning flash with arrThe lightning flash with arr

intended to alerintended to aler

intended to aler

intended to alerintended to aler

insulated “dangerinsulated “danger

insulated “danger

insulated “dangerinsulated “danger

enclosurenclosur

enclosur

enclosurenclosur

constitute a risk of electric shock to persons.constitute a risk of electric shock to persons.

constitute a risk of electric shock to persons.

constitute a risk of electric shock to persons.constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangleThe exclamation point within an equilateral triangle

The exclamation point within an equilateral triangle

The exclamation point within an equilateral triangleThe exclamation point within an equilateral triangle

is intended to aleris intended to aler

is intended to aler

is intended to aleris intended to aler

imporimpor

impor

imporimpor

instructions in the literaturinstructions in the literatur

instructions in the literatur

instructions in the literaturinstructions in the literatur

Contain imporContain impor

Contain impor

Contain imporContain impor

Contain impor

Contain imporContain impor

e that may be of sufe that may be of suf

e that may be of suf

e that may be of sufe that may be of suf

tant operating and maintenance (servicing)tant operating and maintenance (servicing)

tant operating and maintenance (servicing)

tant operating and maintenance (servicing)tant operating and maintenance (servicing)

the operation of your equipment.the operation of your equipment.

the operation of your equipment.

the operation of your equipment.the operation of your equipment.

HEADPHONES SAFETY WARNING

headphone outputs and monitoring levels.headphone outputs and monitoring levels.

headphone outputs and monitoring levels.

headphone outputs and monitoring levels.headphone outputs and monitoring levels.

t the user to the prt the user to the pr

t the user to the pr

t the user to the prt the user to the pr

ous voltage” within the prous voltage” within the pr

ous voltage” within the pr

ous voltage” within the prous voltage” within the pr

CAUTIONS

t the user to the prt the user to the pr

t the user to the pr

t the user to the prt the user to the pr

appliance.appliance.

appliance.

appliance.appliance.

NOTES

tant infortant infor

tant infor

tant infortant infor

tant infor

tant infortant infor

owhead symbol, isowhead symbol, is

owhead symbol, is

owhead symbol, isowhead symbol, is

esence of un-esence of un-

esence of un-

esence of un-esence of un-

oduct’soduct’s

oduct’s

oduct’soduct’s

ficient magnitude toficient magnitude to

ficient magnitude to

ficient magnitude toficient magnitude to

esence ofesence of

esence of

esence ofesence of

e accompanying thee accompanying the

e accompanying the

e accompanying thee accompanying the

mation and useful tips onmation and useful tips on

mation and useful tips on

mation and useful tips onmation and useful tips on

mation and useful tips on

mation and useful tips onmation and useful tips on

9GB4 User Guide

IMPORTANT SAFETY WARNINGS

THIS UNIT MUST BE EARTHED

Under no circumstances should the mains earth be disconnected from the mains

lead.

The wires in the mains lead are coloured in accordance with the following code:

Earth: Green and Yellow (Green/Yellow - US)

Neutral: Blue (White - US)

Live: Brown (Black - US)

As the colours of the wires in the mains lead may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows:

The wire which is coloured Green and Yellow must be connected to the terminal in the plug which is marked with

the letter E or by the earth symbol.

The wire which is coloured Blue must be connected to the terminal in the plug which is marked with the letter N.

The wire which is coloured Brown must be connected to the terminal in the plug which is marked with the letter L.

Ensure that these colour codings are followed carefully in the event of the plug being changed.

To avoid the risk of fire, replace the mains fuse only with the correct value fuse,

as marked on the rear panel.

The internal power supply unit contains no user serviceable parts. Refer all

servicing to a qualified service engineer, through the appropriate Soundcraft

dealer.

10 GB4 User Guide

WARNINGS

• 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 install near any heat sources such as radiators, heat resistors, stoves, or other apparatus

(including amplifiers) that produce heat.

• Do not block any ventilation openings. Ventilation should not be impeded by covering the

ventilation openings with items such as newspapers, table cloths, curtains etc. Install in accordance with the manufacturer’s instructions.

• Do not use this apparatus near water. The apparatus must not be exposed to dripping or

splashing. Objects containing liquid must not be placed on the apparatus.

• The disconnect device is the mains plug; it must remain accessible so as to be readily operable

in use.

• Do not defeat the safety purpose of the polarized or grounding type plug. A polarized plug has

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

• Protect the power cord from being walked on or pinched particularly at plugs, convenience

receptacles and the point where they exit from the apparatus.

• Only use cables and hardware specified by the manufacturer.

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

• Refer all servicing to qualified service personnel. Servicing is required when the apparatus has

been damaged in any way such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally or has been dropped.

• It is recommended that all maintenance and service on the product should be carried out by

Soundcraft or its authorised agents. Soundcraft cannot accept any liability whatsoever for any loss or damage caused by service, maintenance or repair by unauthorised personnel.

• If a trolley is used to carry this apparatus, use caution when moving the trolley / apparatus

combination to avoid injury from tip-over.

• No naked flame sources, such as lighted candles or cigarettes etc., should be placed on the

apparatus.

• Warning: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or

moisture. Do not expose the apparatus to dripping or splashing and do not place objects filled with liquids, such as vases, on the apparatus.

11GB4 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 electromagnetic radiation (e.g. video monitors, high-power electric cabling): this may cause degradation of the audio quality due to induced voltages in connecting leads and chassis.

Caution! In all cases, refer servicing to qualified personnel.

Handling and Transport

The console is supplied in a strong carton. If it is necessary to move it any distance after installation it is recommended that this packing is used to protect it. Be sure to disconnect all cabling before moving. If the console is to be regularly moved we recommend that it is installed in a foam lined flightcase. At all times avoid applying excessive force to any knobs, switches or connectors.

Power Cable

Always use the power supply cable supplied with the mixer: the use of alternative cables may cause damage and voids the warranty.

W a r n i n g ! In the event of an electrical storm, or large mains voltage

fluctuations, immediately switch off the mixer and unplug from the mains.

Signal Levels

It is important to supply the correct input levels to the console, otherwise signal to noise ratio or distortion performance may be degraded; and in extreme cases, damage to the internal) circuitry may result. Likewise, on all balanced inputs avoid sources with large common mode DC, AC or RF voltages, as these will reduce the available signal range on the inputs. Note that OdBu =0.775V RMS.

Refer to the Specifications section for details of input and output levels.

Mains Installation

General Wiring Procedures

To take full advantage of the excellent signal to noise ratio and low distortion of Soundcraft consoles, care must be taken to ensure that incorrect installation and wiring does not degrade the performance of the desk. Hum, buzz, instability and Radio Frequency interference can usually be traced to earth loops and inferior earthing systems. In some areas, especially heavily industrial areas, the incoming mains earth will not be adequate and a separate technical earth for all the audio equipment must be supplied. However, check with your local electricity supply company to ensure that safety regulations are not infringed or negated.

The successful, hum free, installation of a system requires forethought, and the establishment of a set of ground rules, which must be consistently adhered to at all stages of installation.

12 GB4 User Guide

+ 28 hidden pages