Circuit Description; Surround Circuit - Harman Kardon AVR7300 Service Manual

CIRCUIT DESCRIPTION

1.SURROUND CIRCUIT

S/PDIF
INPUT
COAXIAL 1
COAXIAL 2
COAXIAL 3
COAXIAL 4
OPTICAL 1
OPTICAL 2
OPTIACL 3
OPTICAL 4
DIGITAL OUTPUT
COAXIAL
OPTICAL
ANALOG INPUT
ANALOG
FL,FR
C,SL,SR,SW,SBL,SB
FIG 1-1 (Block Diagram of
the Surround Processor circuit)
AVR7300
TONE
AMP
FL
M
a
s
FR
t
e
SL
r
SR
V
o
l
CENTER
u
m
SBL
e
SBR
Pre Output
SW Line
Amplifier
U - COM
External 8M Flash
Memory
FRONT LEFT
FRONT RIGHT
SURROUND LEFT
SURROUND RIGHT
CENTER
BACK SURROUND LEFT
BACK SURROUND RIGHT
Power
Amp
SUB-WOOFER
34
harman/kardon
External 16M SDRAM