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Block diagram
Terminal board
J1001
INPUT
(LOW-LEVEL)
L/MONO
J1002
INPUT
(HIGH-LEVEL)
OUTPUT
(SPEAKER-OUT)
2-1
Switch board
ON -- CANCEL
IN PUT L / H AMP
& H.P FIL TER
IC101
1/2
IN PUT L / H AMP
IC101
2/2
IC104
AUTO POWER ON
LED CONT.
PHASE SW
VOLUME
NORMAL-- REVERSE
CN151
W1001
L.P FILTER /
PHASE /
A.H.B
IC102
IC103
1/2
FREQUENCY
VOLUME
VARIABLE-- FIX
CUT OFF
FILTER SW
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AMP
IC103
2/2