Sound LAB G742BA User Manual

SoundLab Mixer Amplifier
G742BA
User Manual
Thank you for buying a professional Soundlab mixer amplifier. This product
incorporates the latest in mixer amplifier technology and should provide the
user with high quality trouble free sound for many years. To help you derive
the most from you Soundlab mixer amplifier please carefully read the
following user manual.
User Manual for G742BA (SC6220)
Important Notes
1. This manual is part of the product and should be kept with the unit at all
times. Please read it carefully before using the product. A copy of this
manual is available on request www.electrovision.co.uk
2. This is a professional product and is not designed for use in a domestic
environment.
Safety Precautions
1. This product must be earthed at all times.
2. Connection to the mains should be by the mains lead supplied. Fixed
installations should only be undertaken by a qualified person.
3. The product and the mains lead should be checked regularly for
damage. Any repair should only be undertaken by a qualified person.
The product and the mains lead should be tested each year by a
qualified person (this is a legal requirement).
4. Do not expose this product to rain, moisture, extremes of temperature,
acids, alkalies or any other corrosive or reactive agents. Failure to do so
may lead to a risk of fire, electrical shock or product failure/damage.
5. Make sure the power supply is switched off before connecting this
product to the mains supply. All volume controls should be set at zero.
6. Do not attempt to open the enclosure. There are no user serviceable
parts inside. All repairs/inspections should be undertaken by a qualified
person.
7.
Disconnect fr
om the mains when not in use.
8. This amplifier can produce high sound pressure levels that can lead to
hearing damage. It is the user
’s responsibility to regulate the sound
level accor
ding to the envir
onment it is used in. In fixed installations the
!

Sound LAB G742BA Specifications

Power

power supply voltage	230 Vac
power supply frequency	50 Hz
power output at 8 Ohm	2 x 135 W RMS
power output at 4 Ohm	2 x 200 W RMS

Audio Specifications

total harmonic distortion	less than 0.5%
frequency response	20 Hz-20 KHz
signal-to-noise ratio	> 80 dB
channel EQ high frequency	12 KHz
channel EQ mid frequency	2.5 KHz
channel EQ low frequency	80 Hz

Inputs and Outputs

microphone input impedance	3K Ohm
mono line in input impedance	47K Ohm
stereo line in input impedance	10K Ohm
line out impedance	>600 Ohm
rev/aux out impedance	>600 Ohm
headphone out impedance	40 Ohm

Weight and Dimensions

weight	11 Kg
dimensions	350 x 328 x 108 mm

Summary

Important Notes and Safety

User Manual and Product Use

Manual is part of the product; professional use only, not domestic.

General Safety Precautions

Essential safety measures for operation, earthing, damage checks, and environmental exposure.

Operating Precautions

Operational Guidelines

Instructions on amplifier use, connections, cleaning, and speaker connection to prevent damage and ensure performance.

Controls and Functions

Input Channel Controls (Mono)

Detailed explanation of microphone/line inputs, gain, EQ, effects, monitor, pan, and level controls for input channels.

Output and Connection Controls

Overview of phantom power, recording outputs, tape input, main outputs, headphones, monitor send, and mix output connections.

Digital Effects and Equalisation

Explanation of LED indicators, graphic EQ, effects selection, repeat, depth, tape input, and monitor send controls for digital processing.

Front Panel Output Faders

Controls for left/right master outputs, mix output level, and headphone output level on the front panel.

Rear Panel Connections and Controls

Details on speaker outputs, fuse protection, mains connection, and power on/off switch located on the rear panel.

XLR Connection Types

Technical specifications for balanced and unbalanced XLR connections, including pin assignments and their functions.

Specifications