Soundcraft GB8 32 Channel 8 Bus Mixing Console
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 youd 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.
Soundcraft RW5696SM GB8 32 Channel Mixing Console Features:
GB30 mic preamp
4-band GB30 EQ
Individually switched 48V phantom power on every mono input module
4 Full-feature Stereo channels
8 Aux sends (all switchable between pre/post fader operation)
8 Group sends (SWAP with all 8 Auxes)
4 Stereo returns
4 Mute Groups
11x4 Output Matrix
Limiter on Record Output and Alternative Stereo Output
Meter Bridge with accurate VU meters for LEFT, RIGHT and CENTER 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
Dimensions (H x W x D): 9.3" x 56.8" x 25.8"
Weight: 97.4 lbs
32 Mono, 4 Stereo Input Channels
The GB8 series is available in a variety of frame configurations. This model features 32 mono and 4 stereo inputs
8 Subgroup Outputs
The GB8 series feature 8 group outputs for routing to external recorders, monitors, etc.
The matrix output mixer provides added routing flexibility.
8 Auxiliary Sends
8 auxiliary sends provide plenty of routing to external effects, monitors, etc.
All mono inputs provide direct outputs for direct routing to recorders, mixers, etc.
GB30 Microphone Preamplifiers
Soundcraft's GB30 microphone preamplifier's provide an ultra low-noise floor while maintaining high output gain.
The GB8 series features an integrated LED and VU meter bridge for accurate metering of input and output level.
Soundcraft RW5696SM GB8 32 Channel Mixing Console Specifications:
Mic/Line Input to any output, 20Hz - 20kHz <1dB THD + N:
Mic sens. -30dBu, +20dBu at all outputs @1kHz <0.006% Noise:
Measured RMS, 22Hz to 22kHz Bandwidth
Mic E.I.N. @ unity gain,150Ω source impedance -128dBu
Mix Output, 40 inputs routed to mix <-82dBu
Group & Centre Outputs <-83dBu
Aux Outputs (GB2 Groups only) <-80dBu
Matrix Outputs <-89dBu Crosstalk (@1kHz, typical):
Input Channel Mute <-97dB
Input Fader cut-off <-95dB
Pan isolation <-75dB
Mix route isolation <-97dB
Group route isolation <-97dB
Adjacent channel crosstalk <-99dB
Group to Mix <-84dB
Aux Send pots offness (typical) <-84dB
Matrix Send pots offness (typical) <-84dB CMRR:
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 2 x 250mW into 200Ω Input & Output Impedances:
Mic Inputs 2kΩ
Line Inputs and Stereo Returns 10kΩ
Input channels Insert Return 5kΩ with EQ in, otherwise 3kΩ
Mix, Group, Aux, Matrix & Direct outputs 150Ω
Insert sends 75Ω
Recommended Headphone Impedance 100 - 600Ω High pass filter (Mono input):
100Hz, 18dB per octave EQ (Mono input):
HF 13kHz, +/-15dB, 2nd order shelving
Hi-Mid 550Hz-13kHz, +/-15dB, Q=1.5
Lo-Mid 80Hz-1.9kHz, +/-15dB, Q=1.5
LF 80Hz, +/-15dB, 2nd order shelving Metering:
Input channels (GB4/GB8) Single tri-colour 4-segment LED bargraph
Outputs (GB4) 7 tri-colour 12-segment LED bargraphs
Outputs (GB8) 11 tri-colour 12-segment LED bargraphs + Meterpod with 3 VU meters (L/R/C)
Outputs (GB2) 2 tri-coloured 12-segment LED bargraphs (indicates monitor source level)
AC mains supply (internal PSU) 85V-270V AC,
50/60Hz universal input
Power consumption Less than 150W
Temperature range -10ºC to +30ºC
Relative humidity 0% to 80%