Soundcraft GB2 24ch 24+2/4/2

The GB2 is the latest addition to the Soundcraft GB Series, featuring 4 group busses configured as 2 stereo subgroups and an integral 6 x 2 matrix.

Intended for installed-sound and Audio-Visual applications that do not require the functionality provided by the GB4 or GB8, the GB2 is available in frame sizes of 16, 24 and 32 mono inputs, each with 2 stereo inputs as standard. Each input features the high-performance GB30 Mic Pre and GB30 Equaliser designs of the GB4 and GB8, along with 6 Aux buses.

Four Subgroups are provided as two stereo pairs, with a unique facility for adjusting the width of the stereo signal across the stereo mix. The channel pan settings are retained on the group outputs, while the degree of stereo separation to the mix bus is independently adjustable from full stereo through to mono.

The GB2 also features two stereo input channels, with separate mic and line inputs. In normal use, the mic inputs are routed to the local channel and the line inputs act as a stereo return to the mix bus. Selecting the LINE input to the local channel overrides the Mic inputs.

• Technical Specifications

• Frequency Response 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 Input Channel Mute.. <-97dB
• (@1kHz, typical) 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 Mono & Stereo Mic Inputs.. +15dBu
• Max Levels 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 Mic Inputs.. 2kΩ
• Impedances 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
• EQ (Stereo input) HF.. 13kHz, +/-15dB, 2nd order shelving
• Hi-Mid.. 2.5kHz, +/-15dB, Q=0.8
• Lo-Mid.. 450Hz, +/-15dB, Q=0.8
• 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/GB2R).. 2 tri-coloured 12-segment LED bargraphs,
• (indicates monitor source level)
• Power consumption AC mains supply (internal PSU) 85V-270V AC, 50/60Hz universal input
• Power consumption.. Less than 150W
• Operating conditions Temperature range.. -10ºC to +30ºC
• Relative humidity.. 0% to 80%

• Features

• • 16, 24, 32 channel frame sizes
• • 12 busses
• • 2 full feature stereo channels
• • 2 stereo returns (on stereo channels)
• • 6 Aux sends
• • 4 sub groups (paired)
• • 6x2 output matrix
• • GB30 mic preamp and precision equalisation circuitry
• • Direct outputs on every channel
• • Talkback facility
• • 100mm faders
• • Switchable 48V phantom powering on every channel
• • 100Hz high pass filter
• • 12-segment LED metering
• • Record output