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MIXING AMPLIFIER
13
PA-60/120/240
Block Diagram
Block Diagram
8 / 4 OHM -
8 / 4 OHM +
SPEA KER TE RMIA NL
SP1
SP2
SP3
SP4
SP5
COM
COM
-
+
+
-
-
+
SPEAKER ZONE CONTROL CIRCUIT
KEY IN
SP REALY
MASTER
VOLUME
SPEA KER Z ONE I NDI CA TOR
INPUT 6 LEVEL
AMP
0dBu
TEL IN BUFF
TEL IN LEVEL
INPUT S IGN AL DI SPLAY
INPUT 3INPUT 2INPUT 1
INPUT 6INPUT 5INPUT 4
SIG SIGSIG
SIG SIG
SIGNAL DETECTION
TEL IN
INPUT 5 LEVEL
INPUT 4 LEVEL
INPUT 3 LEVEL
INPUT 2 LEVEL
INPUT 1 LEVEL
SIGNAL DETECTION
INPUT 1-2, EXT IN
GAMIX
EXT I N
0dBU
TONE CONTROL
SIG
CHIME
(100Hz, 10kHz)
MIX
BUFF
LPF
HPF
MUTE
MUTE
GA
SIREN
CHIME, SIREN
PRESE T 1
PRESE T 2
PRESE T 3
PRESE T 4
PRESE T 5
PRESET IN
CHIME SWITCH
SIREN SWITCH
MUTE CONTROL
-3-6 0-9-12-16-20
PROT
LEVEL ME TER
LED DRI VER
INPUT 6
-10dBu
-50/-10dBu
INPUT 3
-50/-10dBu
INPUT 2
-50/-10dBu
-50/-10dBu
AMP
MIC/LIN E
-50/-10dBu
INPUT 1
Vph
PHANTOM POWER
AMP
MIC/LIN E
PHANTOM POWER
Vph
AMP
MIC/LIN E
Vph
PHANTOM POWER
AMP
MIC/LIN E
INPUT 4
INPUT 5
MIC/LIN E
MIX
AMP
+
-
TEMP SENS
PROTECTI ON CI RC UIT
MIX
0dBU
MIX OUT
CHIME
SIREN
+5V
+S2
FUSE
CIRCUIT
RECTIFIER
P/T
PWR
POW ER SWITC H
AC I N
B-
B+
-15V
+15V
OPT
CLASS D AMPLIFIER
CLASS D AMPLIFIER
SP ALL
SP 5
SP 4
SP 3
SP 2
SP 1
Vth
EXT CHIME
EXT MUTE
CONTACT INPUT
CONTACT INPUT
PA-240
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