Toa A-1724 - Manual (Page 10)

10
11. BLOCK DIAGRAM
+ + + + + +
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1
AUX 4 –
20 dB/10 k
Ω
AUX 3 –
20 dB/10 k
Ω
MIC 6 –
60 dB/600
Ω
AUX 2 –
20 dB/600
Ω
MIC 5 –
60 dB/600
Ω
AUX 1 –
20 dB/600
Ω
MIC 4 –
60 dB/600
Ω
MIC 3 –
60 dB/600
Ω
MIC 2 –
60 dB/600
Ω
MIC 1 –
60 dB/600
Ω
AUX 5 –
20 dB/10 k
Ω
POWER REMOTE REMOTE VOLUME
+ – H C
(70 V)
240 V 230 V
VCA
Relay 2
Relay 1
Power remote
EB EB EB EB EB EB
PA
ON
POWER switch
Power for control section
Power for audio section Thermal sensor
Fan
240 W only
ZONE 2
ZONE 1
ZONE 1 (100 V) ZONE 2 (100 V)
Zone 2
Z
one 1
POWER
220 – 230 V AC or 240 V AC, 50/60 Hz
A-1712 and A-1724 only
PT
Fuse
Fuse
Output level meter
(Relay 2) (Relay 1)
JP
OT
DIRECT (100 V) 4 – 16
Ω
C C
REC OUT 0 dB LINE OUT, 0 dB/600
Ω
PWR AMP IN, 600
Ω
0 dB
–20 dB
–20 dB –20 dB –20 dB –20 dB –20 dB –20 dB
–20 dB
–20 dB
BASS/TREBLE
MASTER volume
Phantom power ON/OFF
Phantom power
Sensitivity selection
Function switch (DIP switch)
Sensitivity selection
Sensitivity selection