Festival Subwoofer Unit Block Diagram (80 Us & European) - Harman Kardon FESTIVAL 60 Technical Manual

Component Audio System
A B C
8P DIN
1
connector
1 Center
2 Common
(Control signal)
3 Front L
4 Surround
5 Front R
6 Sub power (Control signal)
7 DC+10V
GND
Analog GND
Power
indicator
D306
AC120V 60Hz or
AC230V 50Hz
Power
ON/OFF
A B C
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Festival SUBWOOFER UNIT BLOCK DIAGRAM (80 US & European)
D E F G
Input Buffer
Bass Volume
All ch MIX amp
VR181
IC109(2/2)
NJM4558DD
IC103(2/2)
IC101 102
NJM4558DD
IC103(1/2)
+/- 15V Reg.
IC301 302
NJM78M15FA
NJM79M15FA
IC106(2/2)
IC106(1/2)
D E F G
Harman Kardon
H I J
LPFfilter
HPFfilter
IC110(1/2)
IC109(1/2)
NJM4558DD NJM4558DD
IC110(2/2)
NJM4558DD
HPFfilter T filter
HPFfilter
Buffer
R129 R131 C125 IC105(2/2)
IC104(2/2)
HPFfilter HPFfilter T filter
Buffer
R130 R132 C126 IC105(1/2)
IC104(1/2)
HPFfilter T filter
HPFfilter
Buffer
R159 R161 C155 IC108(2/2)
IC107(2/2)
HPFfilter HPFfilter T filter
Buffer
R160 R162 C156 IC108(1/2)
IC107(1/2)
J
H I
P R E L I M I N A R Y R E L E A S E
K L M
Power amp
Mute Protector
Power amp
Mute Protector
Power amp
Mute
Power amp
Mute Protector
Power amp
Mute
DC Protector
BLOCK DIAGRAM
FESTIVAL-80-US-EU
SUBWOOFER-UNIT-304-10
K L M
Festival 60/80
O P
Bass Speaker
L ch Speaker
R ch Speakers
Center Speaker
Rear Speakers
O P
1 2 3