Yamaha gf12-12 User Manual
6
Front and rear panel
—Owner’s Manual
Channel controls
■
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.
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.
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 (
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.
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 (
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
each frequency band over a
±
15 dB range. The
center frequency and equalizer type for each
band is shown below.
band is shown below.
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 (
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”.
PFL
1–2
ON
3–4
ST
10
5
0
5
10
15
20
20
30
40
HIGH
MID
PEAK
–15
+15
GAIN
–16
+10
–60
26dB
–34
80
PAN
R
EVEN
L
ODD
PRE
PRE
1
2
3
4
5
6
0
10
0
10
0
10
0
10
0
10
0
10
–15
+15
LOW
AUX
PRE
–15
+15
250
5K
4
1
A
8
9
B
2
3
5
7
0
6
C
Band
Center
frequency
Type
HIGH
10 kHz
shelving
MID
250 Hz–5 kHz
peaking
LOW
100 Hz
shelving