GL2200
U
SER
G
UIDE
11
M
ONO
I
NPUT
C
HANNEL
The mono input channel is designed using a very high quality analogue signal path
to ensure absolute sonic purity for microphone or line level sources.
48V
s48V to the XLR input for microphones that require phantom power.
IMPORTANT NOTE : Switch off c48V when non-phantom powered
mic, line or unbalanced sources are to be used with the inputs.
φ
reverses the
POLARITY
of the input source to correct the problems often
encountered in microphone placement, or due to incorrectly wired cables (pin 3
hot instead of pin 2). May also helpful in reducing acoustic feedback between
closely positioned loudspeakers and mics in live sound mixing.
PAD (LINE)
selects the line level jack input when pressed or becomes a 30dB pad
for the XLR input when no jack is plugged in. The XLR is normalled through the
unplugged jack contacts. See MIC/LINE description above.
GAIN
matches the level of the input source to the normal operating level of the
console. Adjust this to read an average ‘
0dB
’ on the channel meter (yellow LED).
Use the
PFL
system to listen to the signal and fine tune the gain.
100Hz
18dB/Octave lo-cut filter removes low frequency noise such as microphone
pops, proximity effect, stage noise and transport rumble after the pre-amp stage. It
can also be used to clean up sounds that do not have much bass content, such as
vocals and cymbals. The lo-cut filter is independent of the equaliser.
The 4-band
EQ
lets you adjust the tonal quality of the sound. The
HF
(treble) and
LF
(bass) bands have a shelving response, which means that all frequencies
beyond the corner frequency are affected. Used with the 100Hz lo-cut filter you
can tailor the low frequency response exactly as you require. The centre flat
position is detented for quick resetting.
100 Hz lo-cut filter
HF and LF EQ
1-2
3-4
PEAK
L-R
PFL
0
SIG
+6
ODD
L
6
AUX
AUX
5
AUX
4
AUX
3
2
AUX
1
AUX
EVEN
R
MUTE
EQ IN
1
Ø
100Hz
HF
12kHz
-15
0
+15
500Hz
3kHz
15kHz
-15
0
+15
MF1
250Hz
35Hz
1kHz
-15
+15
0
MF2
-15
+15
0
60Hz
LF
PRE
PAN
C
5
5
OO
O
O
+6
O
O
+6
O
O
+6
O
O
+6
O
O
+6
O
O
+6
0
0
0
0
0
0
48V
PRE
10
20
30
10
0
20
- 10
30
60
40
PAD
GAIN
30
50
0
PAD
-30dB
vs
-60.00
-50.00
-40.00
-30.00
-20.00
-10.00
0.0
10.00
AMPL(dBr)
10
100
1k
10k
20k
FREQ(Hz)
MIC INPUTS
Plug a microphone source into the XLR input. If you
leave the jack input unplugged then the
PAD (LINE)
switch becomes a
30dB pad for the microphone. This lets you use the XLR input for high
output microphones, or for line level sources.
LINE INPUTS
Plug a line level source into either the XLR or the TRS
jack input. If you use the XLR input make sure that you do not plug
anything into the jack input, and that you press the
PAD (LINE)
switch.
If you use the TRS jack input make sure that you press the
PAD (LINE)
switch. The jack input is only selected with this switch pressed.
