Kenwood KAC-7251 Service Manual

© 2002-12 PRINTED IN JAPAN
B53-0021-00
(
N
)
3379
POWER AMPLIFIER
KAC-7201/7251
SERVICE MANUAL
Illustration is KAC-7251.
KAC-7251 only
30 30
LINE INPUT SIDE
SPEAKER OUTPUT SIDE
DRESSING PANEL
KAC-7251
(A21-4268-03)
KAC-7201
(A21-4269-03)
HEAT SINK
(F01-1727-01)
FUSE
(F52-0015-05)
ACCESSORY
(W01-1606-05)
DRESSING PLATE
(B03-5024-04)
KAC-7251 only
SCREW SET
(N99-1587-05)
SCREW SET
(N99-1740-05)
KAC-7251 only
MODULAR CABLE
(E30-6240-05)
KAC-7251 only
CONNECTING CORD ASSY
(E30-6145-05)
KNOB
(K23-1076-03)
KAC-7251 only
CONTROL ASSY
KAC-7251 only
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299

Kenwood KAC-7251 Specifications

Audio Output

rated power output (4Ω 20Hz~20kHz)	150W x 2 (0.08% THD)
power output (4Ω DIN45324, +B=14.4V)	150W x 2
power output (2Ω 1kHz)	230W x 2 (0.8% THD)
bridged power output	460W x 1 (0.8% THD)
max power output	800W x 1

Filters

low-pass filter	50~200Hz (18dB/oct.)
high-pass filter	150Hz (12dB/oct.)
bass boost circuit (KAC-7251)	OFF/+6/+9/+12dB
bass boost circuit (KAC-7201)	OFF/+12dB

Performance Metrics

frequency response (0dB, -3dB)	5Hz~50kHz
signal to noise ratio	100dB
sensitivity (max.)	0.2V (Rated Output)
sensitivity (min.)	5.0V (Rated Output)
input impedance	10kΩ

General Specifications

operating voltage	14.4V (11V~16V allowable)
current consumption (1kHz 10%THD)	43A
installation size (W x H x D)	285 x 57 x 305 mm
weight	3.32kg