Allen&Heath GR8A - Manual (Page 5)

GR8A U SER G UIDE 5
Specifications
Connections
Input x8............................................ Balanced XLR pin 2 hot
Speaker x8 ......2 pin Phoenix type pluggable screw terminal
Headphones ........................................ TRS tip left, ring right
Monitor........ Unbalanced TRS tip signal, ring, sleeve ground
Remote standby ........................................ 9 pin D connector
Battery backup......................... 4 pin Phoenix type pluggable
AC mains input ....................................................... 3 pin IEC
Input source selection
Independent........................................One input per channel
Common mono .................................Input1 to 1-4 and/or 5-8
Common stereo................ Input1/2 to 1/2,3/4 and/or 5/6, 7/8
Input sensitivity for max power ...............................+4dBu
Input impedance ................................................> 20k ohms
Input signal meters........................3 colour led per channel
Source ........................................................Post level control
Green..................................................... 140mW into 4 ohms
Amber ......................................................... 10W into 4 ohms
Red .......................................................Approaching clipping
RMS output power per channel
Unbridged ............................................ 60 Watts into 4 ohms
Unbridged ............................................ 40 Watts into 8 ohms
Bridged .............................................. 120 Watts into 8 ohms
Peak transient power
Unbridged ................................................. 130W into 4 ohms
Bridged ..................................................... 250W into 8 ohms
Slew rate................................................................... 10V/uS
Frequency response ................... 20Hz to 20kHz +0/-0.5dB
Total Harmonic Distortion
6W into 8 ohms @ 1kHz.............................................. 0.03%
Signal to noise ratio
Relative to 60W into 4 ohms ......................................-100dB
Stand by ................................. Separate control per channel
Control .........................Switch common +15V to channel pin
Attenuation ...................................................................-80dB
Inter-channel Crosstalk............relative to 60W into 4 ohms
@ 1kHz......................................................................< -70dB
@ 10kHz....................................................................< -60dB Protection
Outputs..................................Short circuit, thermal, overload
Power up ........................................... 2 second auto standby
Temperature.......... Sensing fan – stop, medium, high speed
Temperature indicator.............. 3 colour – green, amber, red
AC power requirement
Moulded plug to IEC lead supplied (country dependent)
Internally wired for country... 100, 110, 120, 220 or 240V.AC
Operating frequency ............................................... 47-63 Hz
Quiescent ................................................................ 50 Watts
Maximum............................................................... 500 Watts
Mains fuse................................................T6.3A 250V 20mm
Battery backup requirement
24V battery x2......................................................... 10A max
Dimensions
19” rack mount ....................................... 482 x 380 x 88 (2U)
Desk mount .................................................... 440 x 380 x 92
Weight
Unpacked ...........................................................12kg (26lbs)
Packed ..................................................................13kg (29lb