Allen&Heath GR2 PL-12 USER GUIDE 1 - Manual (Page 13)

GR2 User Guide 13
Channel trim settings
Use a small flat bladed screwdriver to set or adjust.
Pad
Switches in a 30dB attenuator pad for the mic input. Use with hot mic or line level sources.
Gain Adjust from +10 to +60dB gain (-20 to +30dB with pad in). Accepts mic or line signals.
Turn up until the channel LED meter starts to flash red for loud signals, then back off a little.
Music trim Set the switch to match a high +4dBu or low -10dBV level source (switch pressed in).
Equaliser (EQ) settings Use a small flat bladed screwdriver to adjust.
Note
Start with the EQ set at mid position (flat response, 0dB gain).
Try to make only small adjustments if needed. Cut rather than boost where possible.
Mic HPF
12dB/octave high pass filter to reduce low frequency mic popping and handling noise.
Use FREQ to sweep the cut off frequency from 20Hz (off) to 400Hz.
Start between mid position and 200Hz for typical vocal microphones. Mid position = 100Hz.
Mic MF
Peak/dip equaliser with +/-12dB gain (boost/cut).
Swept frequency range from 180Hz to 5kHz. Mid position = 1kHz.
Use MF to notch out resonant or feedback frequencies, or to improve microphone tone.
Mic HF
Shelving high frequency (treble) equaliser with +/-12dB boost/cut around 12kHz.
Use this to brighten up the sound, or to filter out high frequency noise or ringing.
Zone 1 LF
Shelving low frequency (bass) equaliser with +/-12dB boost/cut around 100Hz.
Use as necessary to tune the response of the stereo zone speakers.
Zone 1 HF
Shelving high frequency (treble) equaliser with +/-12dB boost/cut around 10kHz.
Use as necessary to tune the response of the stereo zone speakers.
Aux 100Hz
12dB/octave low pass (high cut) filter with 100Hz turning point frequency.
Switch this in when using the aux output to feed a sub bass speaker without a crossover.
20Hz
mic HPF
400Hz
mic MF
180Hz 5kHz
zone 1 EQ
LF HF
aux SUB FILTER
100Hz
mic HF
AUDIO ZONE MIXER
GR2
ALLEN&HEATH priority mute
mic 3 mic 2 mic 1 mic 6 mic 5 mic 4 music 4 mics zone 1 zone 2 alarm music 3 music 2 music 1
mute > mono < source > < source
page Z2 56 34 2 Z1
mic1=page
1
mic priority
mic enable phantom pwr ! A B C D +4
pad pad
-10
+4
-10
+4
-10
pad pad pad
gain trim
mic 1 level trim
music 1 music 2 music 3
mic 2 mic 3 mic 4 mic 5
long release mic56=music4
Z1 enable Z2 enable Z1 source
Z2 level
Z2 source
Z1 level
music
LF
follow Z1
follow Z2
mic mix page mix mics
zone 1 EQ
sel one
remote enable zone source music select E F G H I J K L
music 1 priority
M N O P Q R S T
2 1 2 1
power on on
mic
on gain trim gain trim gain trim gain trim gain trim on on
mix all
Z1=music+mics
Z2
on HPF HF
mic EQ
MF FREQ
20 400 - + on + - + - + -
HF
U V W X
aux source
100Hz
aux output
sub filter
mic mic music
pad
mic 6
2 1 2 1 2 1
50 200
180 5k
300 2k
+4
pad pad
-10
+4
-10
+4
-10
pad pad pad
gain trim
mic 1 level trim
music 1 music 2 music 3
mic 2 mic 3 mic 4 mic 5
gain trim gain trim gain trim gain trim gain trim
pad
mic 6
LF
zone 1 EQ
HPF HF
mic EQ
MF FREQ
20 400 - + +
50 200
- 180 5k
300 2k
+ - + -
HF
100Hz
aux output
sub filter