Yamaha GF12/12 Owner's Manual page 8

8
Front and rear panel
GAIN
+10
4
PEAK
HIGH
–15
MID
–15
LOW
–15
1
0
2
0
3
0
6
4
0
5
0
6
0
BAL
L
ODD
A
B
1
2
–34
3
80
+15
5
+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
Stereo input channels
Here are the two stereo input channels provided
by the GF24/12, GF16/12, and GF12/12. The
INPUT 21/22 and 23/24 {13/14 and 15/16 on the
GF16, and 9/10 and 11/12 on the GF12/12} jacks
( 6 and 0 of the connector section) are pairs of
connectors that let you control a stereo signal
using one input channel. If a cable is connected
only to the INPUT A 21L or 23L jack {13L or 15L
on the GF16/12, or 9L or 11L on the GF12/12},
the source will be controlled as a monaural sig-
nal.
1
A/B switch
This switch selects input jacks. When the switch
is in the upward position (
the INPUT A jack is selected (page 18, 6 of the
connector section). When the switch is in the
downward section (
INPUT B jack is selected (0 of the connector
section).
2
GAIN control
This adjusts the input sensitivity. The range of
levels that can be accommodated is +10 dB to
–34 dB.
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
LOW 100 Hz
The response is flat when the knob is in the " "
position.
) the input signal of
), the input signal of the
Type
shelving
peaking
shelving