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Soundcraft GB8-32


32 Channel Audio Mixing Console, 8 Group Sends, 8 Aux Sends

Product Code 30567

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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 16 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 1kHz 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 pcb's, 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.

(GB8-40 Shown in picture)

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Dual purpose console.
Individually switched 48V phantom power on every mono input module.
4 STE channels per frame size.
8 Aux sends (all switchable between pre/post fader operation).
8 Group sends (paired).
4 Stereo returns.
4 Mute Groups.
11x4 Output Matrix.
Limiter on Record Output and Alternative Stereo Output.
GB30 mic pre-amp.
4-band GB30 EQ.
Meter Bridge with accurate VU meters for LEFT, RIGHT and CENTRE Outputs.
Integral power supply, with an external power supply link option.
All metal TRS jacks and Neutrik XLRs.
Direct outputs on all mono input channels.


Noise: Measured RMS, 22Hz to 22kHz Bandwidth
Mic E.I.N. @ unity gain,150W source impedance -128dBu
Mix Output, 40 inputs routed to mix <-82dBu
Group Outputs <-83dBu
Aux Outputs <-80dBu
Matrix Outputs <-89dBu
Crosstalk (@1kHz, typical)
Input Channel Mute <-97dB
Input Fader cut-off <-95dB
Pan isolation <-77dB
Mix route isolation <-97dB
Group route isolation <-97dB
Adjacent channel crosstalk <-99dB
Group to Mix <-89dB
Aux Send pots offness (typical) <-84dB
Matrix Send pots offness (typical) <-84dB
Frequency Response
Mic/Line Input to any output, 20Hz - 20kHz <1dB
Mic sens. -30dBu, +20dBu at all outputs @1kHz <0.006%
Typical @ 1kHz 80dB
Input & Output Max Levels
Mono & Stereo Mic Inputs +15dBu
Mono & Stereo Line Inputs +30dBu
Stereo Returns & Insert Returns +20dBu
Any output +20dBu
Nominal Operating Level 0dBu
Headphone Power 2x250mW into 200§Ù
Input & Output Impedances
Mic Inputs 2k§Ù
Line Inputs and Stereo Returns 10k§Ù
Mix, Group, Aux, Matrix & Direct outputs 150§Ù
Insert Sends 75§Ù
Insert Returns 5k§Ù
Recommended Headphone Impedance 50 - 600§Ù

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