Yamaha A-S1000 Owner's Manual page 21

Block diagram
for µ COM
for MC AMP
for EQ AMP
for LINE AMP1
for LINE AMP2
for VOLUME1
for VOLUME2
BALANCE ⇐⇒ UNBALANCE
CONVERTER
MAIN DIRECT
SPEAKER DRIVER SPEAKER DRIVER
COLD (NEGATIVE PHASE) SIDE HOT (POSITIVE PHASE) SIDE
21
En