Yamaha HS80M Service Manual page 19

A B
I
HS80M OVERALL CIRCUIT DIAGRAM 1/2 (INPUT)
1
INPUT
INPUT1
XLR
2
INPUT2
PHONE
3
OP AMP
4
HIGH TRIM
5
OP AMP
6
LOW BOOST
7
C D E
OP AMP
LOW CUT
OP AMP
LEVEL
OP AMP
LOW CUT
OP AMP
STEP FILTER
LOW CUT
FLAT / 80 / 100Hz
12dB / oct
F G
OP AMP
MID EQ
2kHz +2 / 0 / -2dB
OP AMP
OP AMP
STEP FILTER
HIGH CUT
OP AMP
OP AMP
MY: Mylar Capacitor
Note: See parts list for details of circuit board component parts.
H I
OP AMP
ROOM CONTROL
0 / -2 / -4dB
to AMP, TRANS, AC INLET to AMP, TRANS, AC INLET
CN602 (to Page 3 D6) CN602 (to Page 1 xx)
J
HS80M/HS50M
1
2
3
4
5
6
7
3