Allen&Heath GS-R24M - Manual (Page 11)

Allen & Heath 11 GS_R24 User Guide
MONO INPUT CHANNEL
Line Input Jack Socket
Standard 1/4” (6.25mm) Jack socket for balanced or unbalanced line
level signals. Wired Tip=Hot(+), Ring=cold (-), Sleeve=Chassis.
Insert Jack Socket
Standard 1/4” (6.25mm) Jack socket for unbalanced insert send and
return signals. Wired Tip=send, Ring=return, Sleeve=Chassis. Nomi-
nal level is 0dBu. The insert point is after the 100Hz filter and before
the EQ.
Gain Control
This adjusts the gain of the input amplifier to match the signal level
of the input. The gain is varied from +6dB to +60dB for signals
plugged in to the xlr socket (Mic Input) and –14dB to +40dB for
signals plugged into the Line input jack.
100Hz Hi-pass Filter
The Hi-pass filter is used for reducing pop noise and
rumble from microphone signals. It is a 2-pole (12dB
per octave) filter with a corner frequency set at just
below 100Hz.
The filter affects signals from both Mic XLR and Line
jack socket.
Line Input Switch
Selects the source for the pre-amp from XLR to Line input jack. The
balanced input signal is padded by 20dB but noise and distortion are
kept to a minimum in order to make it transparent when connecting
external devices.
Microphone Input Socket
Standard 3-Pin XLR socket wired as Pin 1=Chassis, Pin 2=hot (+),
Pin 3=Cold (-).
REAR PANEL CONNECTIONS
Direct Output Jack Socket
Standard 1/4” (6.25mm) Jack socket for Channel output signal.
Wired Tip=Hot(+), Ring=Cold(0V), Sleeve=Chassis. Nominal level is
0dBu. The source for the Direct Output is selectable by option
jumpers internally, factory set to Pre-Fade.
48V Phantom Power Switch
Applies +48V to pins 2 and 3 of the XLR input though 6k8 resistors
for phantom powered condenser microphones.
FRONT PANEL CONTROLS
Polarity (phase) reverse switch
Reverses the polarity of the balanced input signal phases for both
mic XLR and Line jack inputs.
10.00 Hz 100.00 1000.00 10000.00 40000.00
-40.00
-35.00
-30.00
-25.00
-20.00
-15.00
-10.00
-5.00
0.00
dBr
60 40 -14 6
30
40
50
0
20
GAIN
HPF
100Hz
+48V LINE
POL
DIRECT
OUT
INSERT
LINE
MIC
CT
RT
M1