Kenwood KAC-648 Support and Manuals
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User Manual - Page 2
...problems that can scratch the surface of water splashing. • When replacing...Kenwood dealer. • Do not touch the unit during installation, consult your Kenwood dealer.
• If the unit does not seem to be activated. Cleaning the unit
If the front panel gets dirty, turn off and the amplifier
stops operating. Accessories
Part... leave any
indication of trouble. s Power indicator:
...
User Manual - Page 3
... : 15 mm or more)
• Since the power amplifier has no unconnected cables or connectors are touching the car body. Install the amplifier in a place where people, resins, and other damage.
• Do not install near the dashboard, rear tray, or air bag safety parts. • The installation to the vehicle should securely fasten the unit...
User Manual - Page 4
...
The rated input of the speakers should have an impedance of the amplifier.
Otherwise malfunction may result.
7 Speaker level input terminals
8 INPUT... LEVEL INPUT
LEFT
RIGHT
A
B
SPEAKER LEVEL INPUT
A
B
L
R
1 234
6
7
8 9 0! This unit is amplifier B. FILTER
OPERATION
OFF HPF LPF
STEREO
MONO(Lch)
1.0
INPUT SELECTOR AB A
0.5
MONO L
GND
0.3
MIN MAX
INPUT
SENSITIVITY...
User Manual - Page 5
...to use as a guide.
15
1.0
10
1.0
2.0
0.5 0.5
NOTE
3.0 25
MIN
4.0 (V)
(W)
0.3 0.3
MAX 0.2
For the pre-output level or the maximum power output, refer to the "Specifications" in the instruction manual of the center unit.
$ OPERATION switch
The amplification methods of the signals input to amplifiers A and B can be selected
independently according to amplifiers A and B. ! Set to this...
User Manual - Page 6
...LPF
STEREO
MONO(Lch)
CONTROL A
CONTROL B
FILTER
OPERATION
OFF
(Lch)
HPF LPF STEREO MONO
1.0 0.5
0.3 MIN MAX
INPUT SENSITIVITY(V)
1.0
0.5
0.3 MIN MAX
INPUT SENSITIVITY(V)
CENTER UNIT Switch setting
s High-power 2-channel system
LA L
R R
L
RB
L LINE R OUT
BRIDGED
(High pass)
Subwoofer (L + R) (Bridged)
BRIDGED BRIDGED
INPUT SELECTOR AB A
FILTER
OPERATION
OFF HPF LPF
STEREO
MONO...
User Manual - Page 7
... the ground cable to a metal part of the car chassis that acts as an electrical ground
passing electricity to the battery's negative - The current capacity of the power supply wiring cable should be used, use a power supply wiring cable and protective fuse of Wiring Cable (AWG)
KAC-648
22 A
30 A × 1 [15 A ×...
User Manual - Page 8
...Rear Left speaker
Speaker (Bridged)
A Bridged output
BRIDGED LEFT
RIGHT
Lead terminal (Commercially available parts)
25
FUSE(25A)
POWER IN SPEAKER OUTPUT
GND
A
BATT
P.CON(REMOTE)
BRIDGED LEFT
...Selection
• The rated input power of the speakers that are going to the amplifier.
8 When more than one set of speakers are going to be connected should be 2Ω or greater (for...
User Manual - Page 9
...
Model KAC-648
Stereo Connections (4Ω) 50 W or greater
Bridged Connections (4Ω) 140 W or greater
50W (4Ω)
50W (4Ω)
4 Ω
Maximum output of the amplifier
...
R SENSITIVITY(V)
4 CHANNEL POWER AMPLIFIER
CONTROL B
A Right input
B Right input
To Power control (REMOTE) terminal
Front output
RCA cable (Commercially available part)
CENTER UNIT (Cassette receiver, ...
User Manual - Page 10
...
Genuine-accessory car stereo
ACC
B Left input Front Right Front Left Rear Left Rear Right
B Right input
LEVEL RINIGHPTUT SPELEAFKT ER
Lead terminal (Commercially available parts)
2CAUTION
• The genuine-accessory car stereo shall have a maximum power output of no more than 25 W. • Do not connect the speaker output leads...
User Manual - Page 11
...Troubleshooting Guide
What might appear to be a malfunction in the car body.
• The switches may be blown because • Replace the fuse with wrong + / polarity.
• A speaker cable is not pinched by anything.
• Set...unit may be set to the correct position.
Before calling service, first check the following table for possible problems.
PROBLEM
POSSIBLE CAUSE
SOLUTION...
User Manual - Page 12
... W × 2 (1 kHz, 0.8 % THD)
Rated Power Output (2 Ω) 4 Channel Mode 35 W × 4 (1 kHz, 0.8 % THD)
Frequency Response 10 Hz ~ 45 kHz (+0, -1 dB) Signal to change without notice. Specifications
Specifications subject to Noise Ratio...100 dB Sensitivity (MAX 0.2 V (rated output) Sensitivity (MIN 4.0 V (rated output) Input Impedance...10 kΩ Low Pass Filter ...80 Hz (12 dB...
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