Troubleshooting Guide; Bass Boostlevel - Kenwood KAC-9104D Instruction Manual

Controls Troubleshooting Guide
What might appear to be a malfunction In
your
unit mayJust
be
the
result
ofsflght mlsoperatlon
or
mlswlrlng.
Before
calling
service,
first check the
following table for possible problems.
No sound. (Blown fuse.)
tI' Input (or output) cables are disconnected.
~
Connect the input (or output) cables.
tI' Protection circuit may be activated.
~
Check connections by referring to <Protection function>.
tI' Volume is too high.
~
Replace the fuse and use lower volume.
tI' The speaker cord is shorted.
Q"
Aher check the speaker cord and fixing the cause of the short, replace the
fuse.
The output level Is too small (or too large).
tI' The input sensitivity adjusting control is not set to the correct position.
~
Adjust the control correctly referring to <Controls>.
The sound quality Is bad. (The sound Is distorted.)
tI' The speakers wire are connected with wrong
e /e
polarity.
Q"
Connect them properly checking the
e /e
of the terminals and wires
well.
tI' A speaker wire is pinched by a screw in the car body.
~
Connect the speaker wire again so that it is not pinched by anything.
tI' The switches may be set improperly.
~
Set switches properly by referring to <Controls>.
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Power Indicator
When the power is turned on, the Power indicator lights.
If the Power indicator does not light when the power is turned on, the
protection function may be activated. Check whether there is any indication
of trouble. Refer to <Protection function> (page 3).
@ illumination
@ ISF (Infrasonic filter) switch
Ultralow frequencies that cannot be reproduced even by a subwoofer speaker
do not become sound but become unnecessary oscillations, which affect the
sound by causing distortion, etc. Setting this switch to "15 Hz' or "25 Hz" cuts
the frequencies below the respective frequency.
This improves the reproduction performance of the speakers by eliminating
unnecessary oscillations which will not become sound.
o
PHASE switch
When this switch is set '180" (Reverse) the speaker output phase is reversed.
@) BASS BOOSTLEVEL control
Sets the low frequency level to be compensated.
®
LPF(Low-PGSs Filter} FREQUENCY control
This control adjusts the frequency band output from this unit.
Q) INPUTSENSITIVITY control
Set this control according to the pre-output level of the center unit connected
with this unit, or to the maximum power output of the genuine-accessory car
stereo.
Use the diagram on the right as a guide.
!pecifications
CEA-2006
Primary Power Output Ratings (RMS Watts per
channel
@
4 ohms, 1 % THO+N) 500 W
x
1
Signal to Noise Ratio (Reference: 1Watt into 4
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Audio Section
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Rated Power Output (+B = 14.4 V)
(40) (20 Hz - 200 Hz, 0.5 % THO) 500 W
x
1
(40) (OIN45324, +B = 14.4 V)
500 W
x
1
(2 0) (100 Hz, 0.8 % THO) 900 W
x
1
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. . . _
Sensitivity (rated output) 0.2 V - 5.0 V
Input Impedance 10k()
Signal to Noise Ratio 100 dB
Low Pass Filter Freguency (-24 dB/oct.) 50 - 200 Hz (variable)
Infrasonic Filter Freguency (-18 dB/oct.) 15/25 Hz
Bass Boost Circuit (40 Hz) 0 - + 18 dB (variable)
General
Operating Voltage 14.4 V (11 - 16 V allowable)
Current Consumption 55 A
Installation Size (W
x
H
x
0) 350
x
59
x
238 mm
...... .. _ _ _ _ _ _ . _ _
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• Specifications subject to change without notice.
English
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