Inter-m PA-60 - Block Diagram

MIXING AMPLIFIER
12
PA-60/120/240
Block Diagram
Block Diagram
PROTECTI ON CIRC UIT
TEMP SENS
-50/-10dBu
INPUT 1
-
+
-50/-10dBu
INPUT 2
+
-
-50/-10dBu
INPUT 3
-
+
INPUT 6
-10dBu
-50/-10dBu
-50/-10dBu
INPUT 4
INPUT 5
SPEAKER ZONE CONTROL CIRCUIT
KEY IN
SP REALY
CLASS D AMPLIFIER
MASTER VOLUME
SPEA KER Z ONE INDICA TOR
SP ALL
SP 5
SP 4
SP 3
SP 2
SP 1
INPUT 6 LEVEL
AMP 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 VE R
SPEA KER TE RMIANL
SP1
SP2
SP3
SP4
SP5
COM
OPT IN
8 / 4 OHM +
COM
8 / 4 OHM -
PA-120
PA-60
AMP
MIC/LIN E Vph
PHANTOM POWER
AMP
MIC/LIN E
PHANTOM POWER
Vph
AMP
MIC/LIN E Vph
PHANTOM POWER
AMP
MIC/LIN E
MIC/LIN E
MIX
AMP
+
-
MIX
0dBU
MIX OUT
OPT
CHIME
SIREN
+15V
-15V
B+
B-
AC I N
PO WE R SWITC H
PWR
P/T
RECTIFIER
CIRCUIT
FUSE
+S2 +5V
Vth
0dBu
TEL IN
EXT MUTE
CONTACT INPUT
EXT CHIME
CONTACT INPUT
P
A-60/120