Channel Controls - Yamaha GF12/12 Owner's Manual

6
Front and rear panel

Channel controls

GAIN
+10
–16
4
PEAK
HIGH
–15
MID
250
–15
LOW
–15
1
0
2
0
3
0
6
4
0
5
0
6
0
PAN
L
ODD
26dB
1
2
–34
–60
3
80
+15
5
5K
+15
+15
AUX
PRE
10
10
PRE
10
10
7
PRE
10
10
8
R
EVEN
9
ON
10
0
1–2
5
3–4
0
A
5 ST
10
15
20
30
40
B
PFL
C
—Owner's Manual
Mono input channels
Here are the 20 {12, 8} mono input channels of
the GF24/12 {GF16/12, GF12/12}. The input
channel section processes the signal from the
input jacks of the connector section, and sends
the result to the GROUP buses, AUX buses, and
the ST bus.
1
Pad switch
This attenuates the input signal by 26 dB. The
pad is on when this switch is pressed in.
2
GAIN control
This adjusts the input sensitivity. The range of
levels that can be accommodated is –16 dB to
–60 dB when the pad switch ( 1 ) is off, and
+10 dB to –34 dB when the pad switch is on.
3
High pass filter switch
This is an on/off switch for the high pass filter
that cuts the frequency range below 80 Hz at a
slope of 12 dB/octave. The high pass filter is on
when the switch is pressed in.
4
PEAK indicator
This is an indicator that detects post-EQ clipping.
It will light 3 dB before clipping, indicating that
the signal is near the clipping level. If this LED
lights, lower the GAIN control ( 2 ).
5
EQ controls (HIGH/MID/LOW)
This is a three-band equalizer that boosts/cuts
each frequency band over a 15 dB range. The
center frequency and equalizer type for each
band is shown below.
Center
Band
frequency
HIGH 10 kHz
MID 250 Hz–5 kHz
LOW 100 Hz
The response is flat when the knob is in the " "
position.
6
AUX controls (1–6)
These knobs adjust the level at which the input
channel signal is sent to the AUX buses 1–6. AUX
controls 1 and 2 are fixed at pre-fader, and AUX
controls 3–6 can be switched between pre/post
fader using the PRE switch (7). When a knob is
in the "√" position, the level is "nominal".
Type
shelving
peaking
shelving