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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.
| Frequency Response: | Mic/Line Input to any output, 20Hz - 20kHz: <1dB |
| Distortion: (THD) | Mic sens. -30dBu, +20dBu at all outputs @1kHz: <0.006% |
| Crosstalk: (@1 kHz, typical) | Input Channel Mute: <-97dB Input Fader cut-off: <-95dB Pan isolation: <-75dB Mix route isolation: <-97dB Group route isolation: <-97dB |
| Output Impedance: | Mix, Group, Aux, Matrix & Direct outputs: 150 ohm |
| Noise: (22 Hz to 22 kHz) | Mic E.I.N. @ unity gain, 150 ohm source impedance: -128dBu Mix Output, 40 inputs routed to mix: <-82dBu |
| Maximum Input Level: | Mic: +15 dBu; Line: +30 dBu |
| Maximum Output Level: | Any output: +20dBu |
| Input Impedance: | Mic: 2k ohm; Line input, stereo returns: 10k ohm |
| High pass filter : (Mono input) | 100Hz, 18dB per octave |