Inter-m PAM-324 - Page 18

PUBLIC ADDRESS AMPLIFIER
16
PAM-312/324/336/348
SPEAKER ZONE CONTROL CIRCUIT
KEY IN
SP REALY
MASTER
VOLUME
SPEAKER ZONE INDICATOR
SP ALL
SP 5
SP 4
SP 3
SP 2
SP 1
AMP
TEL IN LEVEL
INPUT 3
EXT IN
0dBV
TONE CONTROL
CHIME
(100Hz, 10kHz)
(+10 ~ -10)
LPF
HPF
MUTE
SIREN
CHIME SWITCH
EM SWITCH
-3-6
0
-12-20
PROT
LEVEL METER
LED DRIVER
(+50 ~ +10)
AMP
MIC/LINE
Vph
PHANTOM POWER
AMP
PHANTOM POWER
Vph
AMP
Vph
PHANTOM POWER
TEMP SENS
PROTECTION CIRCUIT
0dBV
MIX OUT
CHIME
AC IN
PWR
SMPS
-20 ~ 0 dBV
TEL IN
+
-
INPUT 1
-60 ~ -20dBV
-
+
INPUT 2
-60 ~ -20dBV
+
-
INPUT 3
-60 ~ -20dBV
INPUT 5 INPUT 4
-20dBV
-20dBV
-20dBV
INPUT 6 RM-05A
-20dBV
INPUT 6
(+50 ~ +10)
MIC/LINE
(+50 ~ +10)
MIC/LINE
SIGNAL DETECTION
TEL IN
MUTE
MIX
MIX
GAIN
GAIN
GAIN
GAIN
LIMMITER
BUFFER
GAIN
SPEAKER TERMIANL
SP1
COM
SP2 SP3
SP4
SP5
COM
COM
MODULE 1
MODULE 2
+15V
-15V
+24V +80V
-80V
LPF
+
-
GAIN
LOW-Z
HIGH-Z
SELECT
GAIN
CLOCK
DRIVER
HIGH
DRIVER
LOW
MODULATOR
PWM
CLASS D AMPLIFIER
OSCILLATOR
DRIVER
HIGH
DRIVER
LOW
MODULATOR
PWM
FUSE
AMP
GAIN
GAIN
MIX
MUTE
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
GAIN
HPF
BUFFER
COM
COM
VOLUME
INPUT 4
VOLUME
INPUT 5
VOLUME
INPUT 6
VOLUME
INPUT 2
VOLUME
INPUT 1
VOLUME
EM
EM SWITCH
BUFFER
REGULATOR
+17V
-17V
POWER SWITCH
(with PFC)
PAM-348