GB8 Professional Mixing Console - 48-Channel


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Augmenting the already highly successful GB4 console range is the new GB8 8-bus console. The GB4 has found many friends including the Cavern Club in Liverpool, and in use at the Bedford venue in South London.

Available in frame sizes from 24 to 48 channels, each with four full-function stereo channels and four stereo returns, the GB8 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 GB8 to be used on FOH or monitor duties, with fader control of group or aux outputs. Additional features over the GB4 include a 1 kHz oscillator and a meter bridge with three led meters that very closely emulate the ballistics of VU meters.

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

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

Although largely conventional in layout, the GB8 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.

Both the GB4 and GB8 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.


Soundcraft GB8 Specs
• Total # Of Inputs 48 Total
• Mic/Line Inputs 48 Line: 1/4" TRS Phone
• 48 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 8 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 bargraph
• Outputs: 11 tricolor 12-segment LED bargraphs, + Meterpod 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 99.2 lb. (45 kg)
• Weight 74.37 x 9.23 x 25.83" (1889 x 235 x 656 mm) (WxHxD)
• Packaging Info
• Package Weight 131.5 lb.
• Box Dimensions (LxWxH) 81.5 x 30.5 x 11.5"
More Information
Weight 128.700000
Length 81.5
Width 30
Height 12
Manufacturer Soundcraft by Harman
Manufacturer Model Number RW5709SM
Manufacturer Part Number RW5709SM
UPC 688705008981
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