GB4 Professional Mixing Console - 40-Channel GB30 Mic Preamps and EQ


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Featuring the GB30 Mic preamps and EQ, the GB4 is designed by Graham Blythe for the company’s 30th anniversary.

The desks carry the high quality hallmark with which Soundcraft is synonymous, with engineering and design as you'd expect from this high-end manufacturer. Careful attention has been given to the mechanical construction, to ensure reliability under strenuous conditions, with all input modules being constructed with individual vertically-mounted PCBs, fitted to the steel chassis front panel with individually-nutted potentiometers.

The GB Series also shares the stylish looks of the MH4, MH3 and LX7ii consoles, continuing a strong family look and feel across the range.

Available in frame sizes from 16 to 40 channels, the GB4 is designed for installations such as churches and performance venues, or for small touring sound systems. The dual-mode topology implemented to such success on the MH3 and MH4 desks allows the GB4 to be used on FOH or monitor duties, with fader control of group or aux outputs.

Although largely conventional in layout, the GB4 does have some unique mechanical features. The rugged steel chassis has a sloping rear connector panel so that it is easier to configure from the front of the desk, while the integral power supply has a link option for an external back-up PSU.

Four mute groups allow several channels to be muted simultaneously, while another unique facility is the limiter on a set of dedicated record outputs that makes it easier to create a stereo recording of the mix.

The console also features an output matrix with seven feeds to four outputs, being fed from the group busses and main L, R and C (mono) outputs.

The GB4 offers a comprehensive set of functions and facilities in a small and cost-effective footprint, and delivers the high performance and reliability you would expect from a Soundcraft product.


• Total # Of Inputs 40 Total
• Mic/Line Inputs 40 Line: 1/4" TRS Phone
• 40 Microphone: 3-pin XLR
• Stereo Line Inputs 4 Stereo: L/R Paired 1/4" Phone Line & 3-pin XLR Microphone
• In-Line Inputs/Returns No
• AUX Sends 8 Aux Sends
• AUX Returns 4 Stereo Returns
• Inserts 1/4" TRS Phone - Mono Inputs, Main Output and Subgroup Outputs
• BUS (Group) Outputs 4 Subgroups: Balanced 3-pin XLR
• 2 Trk Master I/O Mix L/R: Stereo Paired 3-pin XLR Balanced
• ALT I/O ALT Stereo: L/R Stereo Paired 1/4" Output
• Monitor Outputs Monitor: L/R Stereo Paired 1/4" TRS Phone
• EQ Section High Filter: 13 kHz, +/- 15 dB, 2nd order shelving
• Hi-Mid: 550 Hz - 13 kHz, +/- 15 dB, Q=1.5
• Lo-Mid: 80 Hz - 1.9 kHz, +/- 15 dB, Q=1.5
• Low Filter: 80 Hz, +/- 15 dB, 2nd order shelving
• Solo/Mute All Input Channels
• Channel Level Control 100 mm Faders
• Trim/Gain Control Rotary Potentiometers
• Phantom Power +48V Phantom individually switched
• Metering Input Channels: Single tricolor 4-segment LED bar graph
• Outputs: 7 tricolor 12-segment LED bar graphs, + Meter pod with 3 VU meters (L/R/C)
• Frequency Response 20 Hz to 20 kHz <1 dB
• Dynamic Range not specified by manufacturer
• Signal-to-Noise Ratio Measured RMS, 22 Hz to 22 kHz Bandwidth
• -128 dBu Mic E.I.N. @ unity gain, 150 ohms source impedance
• <-82 dBu Mix Output, 40 inputs routed to mix
• <-83 dBu Group & Center Outputs
• <-80 dBu Aux Outputs
• <-89 dBu Matrix Outputs
• Total Harmonic Distortion (THD) <0.006% Mic sens. -30 dBu, +20 dBu at all outputs @ 1 kHz
• Power Supply Internal AC PSU - 85V, 270V AC, 50/60 Hz universal input
• Power Consumption
• Less than 150W
• Dimensions 59.96 x 9.23 x 25.83" (1523 x 235 x 656 mm) (WxHxD)
• Weight 81.6 lb. (37 kg)
• Packaging Info
• Package Weight 103.5 lb.
• Box Dimensions (LxWxH) 65 x 31 x 12"
More Information
Weight 90.400000
Length 55.1
Width 12
Height 21
Manufacturer Soundcraft by Harman
Manufacturer Model Number RW5693SM
Manufacturer Part Number RW5693SM
UPC 688705209456
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