Soundcraft GB2R 12+2 Channel Mixer

This 19" rack-mountable mixer is designed specifically for smaller installations in churches and performance venues, or for small portable PA systems. It will also find friends in broadcast where its high quality and feature set will be very appealing.

The GB2R model is available in a 16 channel configuration and this 12+2 channel configuration. This 12+2 model of the GB2R offers 12 mono inputs, two full-feature stereo inputs and 2 group busses. Both models have 6 auxiliary sends.

As with all Soundcraft consoles, emphasis was placed on operational simplicity, clear and intuitive layout and the highest possible audio performance. The Soundcraft GB2R inherits both the GB30 Mic preamplifier and GB30 Equaliser designs from the GB4 and GB8.

For ease of installation, the connector section is contained in a rotatable pod, allowing cable access from the top of the mixer if sat on a table-top, or from the rear when mounted in a 19" rack.

On the stereo inputs on this 12+2 model, connectors are provided for both Mic and Line inputs. With Mic signals routed to the local channel, the Line inputs are available as stereo returns to the main mix bus. Two stereo returns and a 2-track (for example CD replay) input are provided, which means that the GB2R-12+2 model can offer up to 26 inputs to mix in a mixer just 19" (485mm) wide.

Every input has a pre/post switchable direct output for recording or effects sends, while an internal universal voltage PSU avoids external power supply connections.

Soundcraft GB2R 12+2 Features

• 12+2 channel version, with 12 mono inputs and 2 stereo inputs, 1 Stereo Sub Group Output, Mix and Mono Sum Outputs, and 6 Aux Outputs - Total Inputs to Mix: 26 (when Mics used on stereo input)
• 19" rackmountable console
• Rotatable connector pod for top or rear cable entry
• 10 busses
• 2 full feature stereo inputs
• GB30 Mic preamp and precision EQ on inputs
• Switchable +48V phantom power on every mic input
• 100Hz Hi-pass filter
• Direct outputs on every channel
• 100mm faders
• Stereo Mix Output and separate Mono Sum output
• Record output
• Internal Universal switched mode PSU

• GB2R 12+2 channel mixer1
• Power cable1

• Frequency Response (mic/line input to any output, 20Hz - 20kHz)<1 dB
• THD+N (mic sens. -30dBu, +10dBu at all outputs @1kHz)<0.006%
• Noise (measured RMS, 22Hz to 22kHz bandwidth)
  • Mic EIN @ Unity Gain, 150Ω Source Impedance: -128dBu
  • Mix Output, 16 Inputs Routed to Mix: <-86dBu
  • Group & Centre Outputs: <-86dBu
  • Aux Outputs: <-86dBu
• 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
• CMRR (typical @ 1kHz)90dB
• 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: 2x 250mW into 200Ω
• Input & Output Impedances
  • Mic Inputs: 2kΩ
  • Line Inputs & 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: 50-600Ω
• EQ (mono input)
  • High Pass Filter (mono input): 100Hz, 18dB/octave
  • 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: single LEDs, signal present and peak
  • Outputs: 2 tri-color 12-segment LED bargraphs
• Power
  • AC Mains Supply (internal PSU): 90V-240V AC, 50/60Hz universal input
  • Power Consumption: less than 100W
• Operating Conditions
  • Temperature Range: 14°F to 86°F (-10°C to 30°C)
  • Relative Humidity: 0% to 80%
• Dimensions19" x 17.47" x 5.46"