Troubleshooting Guide; Specifications - Kenwood KAC-PS4D Instruction Manual

Troubleshooting Guide

What might appear to be a malfunction in your unit may just be the result of slight misoperation or miswiring. Before calling service, first check the following
table for possible problems.
PROBLEM
No sound.
(Blown fuse.)
The output level is too small
(or too large).
The sound quality is bad.
(The sound is distorted.)

Specifications

Specifications subject to change without notice.
CEA-2006
RMS Watts per channel @ 4 ohms, 1 % THD+N .......................................................................................................................................................................100 W × 4
Signal to Noise Ratio (Reference: 1Watt into 4 ohms) ................................................................................................................................................................ 78 dBA
Audio Section
Max Power Output .........................................................................................................................................................................................................................................1200 W
Rated Power Output (+B = 12.0 V)
(4 Ω) (20 Hz – 20 kHz, 0.8 % THD) ....................................................................................................................................................................................... 75 W × 4
(2 Ω) (1 kHz, 1.0 % THD) ..........................................................................................................................................................................................................100 W × 4
(Bridged 4 Ω) (1 kHz, 1.0 % THD) ..................................................................................................................................................................................... 200 W × 2
Rated Power Output (+B = 14.4 V)
(4 Ω) (20 Hz – 20 kHz, 0.8 % THD) .....................................................................................................................................................................................100 W × 4
(4 Ω) (DIN45324, +B = 14.4 V) .............................................................................................................................................................................................100 W × 4
(2 Ω) (1 kHz, 1.0 % THD) ..........................................................................................................................................................................................................150 W × 4
(Bridged 4 Ω) (1 kHz, 1.0 % THD) .......................................................................................................................................................................................300 W × 2
Frequency Response (+0, -1 dB) ............................................................................................................................................................................................ 20 Hz – 20 kHz
Sensitivity (rated output) (MAX.) .................................................................................................................................................................................................................0.2 V
Sensitivity (rated output) (MIN.) ..................................................................................................................................................................................................................5.0 V
Input Impedance ............................................................................................................................................................................................................................................... 10 kΩ
Signal to Noise Ratio ......................................................................................................................................................................................................................................105 dB
Low Pass Filter Frequency (-24 / -12 dB/oct.)
Low Range ................................................................................................................................................................................................................................. 30 – 250 Hz
High Range ............................................................................................................................................................................................................................... 500 – 5k Hz
High Pass Filter Frequency (-24 / -12 dB/oct.)
Low Range ................................................................................................................................................................................................................................. 30 – 250 Hz
High Range ............................................................................................................................................................................................................................... 500 – 5k Hz
Infrasonic Filter Frequency (-24 dB/oct.) ........................................................................................................................................................20 / 30 / 40 / 50 / 60 Hz
Built in Parametric EQ Control
Frequency BAND 1 ...................................................................................................................................................................................25 / 40 / 60 / 80 / 100 Hz
Frequency BAND 2 ........................................................................................................................................................................ 150 / 200 / 300 / 400 / 500 Hz
Frequency BAND 3 ......................................................................................................................................................................... 600 / 800 / 1 k / 1.5 k / 2 k Hz
Frequency BAND 4 ........................................................................................................................................................................................3 k / 4 k / 5 k / 6.3 k Hz
Frequency BAND 5 ................................................................................................................................................................................8 k / 10 k / 12.5 k / 16 k Hz
Quality Factor BAND 1 – BAND3 ...................................................................................................................................................................... 1.0 / 2.0 / 3.0 / 5.0
Quality Factor BAND 4 – BAND5 ....................................................................................................................................................................... 2.0 / 4.0 / 8.0 / 10
Gain (Boost or Cut) ............................................................................................................................................................................................................-9 dB – +9 dB
Delay Control ........................................................................................................................................................................................................0 ms – 3.9 ms (0.1 ms Step)
Phase Inverter .....................................................................................................................................................................................................0° (Normal) / -180° (Reverse)
General
Operating Voltage .............................................................................................................................................................................................. 14.4 V (11 – 16 V allowable)
Current Consumption ........................................................................................................................................................................................................................................ 60 A
Installation Size (W × H × D) .........................................................................................................................................................................................340 × 60 × 225 mm
..................................................................................................................................................................................................................1213-3/8 × 2-3/8 × 8-7/8 inch
Weight ...................................................................................................................................................................................................................................................3.8 kg (8.4 lbs)
Weight ..................................................................................................................................................................................................................................................................................
POSSIBLE CAUSE
• Input (or output) cables are disconnected.
• Protection circuit may be activated.
• Volume is too high.
• The speaker cord is shorted.
• The input sensitivity adjusting control is not set to the correct
position.
• The speakers wire are connected with wrong + /-polarity.
• A speaker wire is pinched by a screw in the car body.
• The switches may be set improperly.
• The "OVER" indicator is lit.
SOLUTION
• Connect the input (or output) cables.
• Check connections by referring to <Protection function>.
• Replace the fuse and use lower volume.
• After check the speaker cord and fixing the cause of the short,
replace the fuse.
• Adjust the control correctly referring to <Input Sensitivity>.
• Connect them properly checking the + / - of the terminals
and wires well.
• Connect the speaker wire again so that it is not pinched by
anything.
• Set switches properly by referring to <Controls> or <DSP
Settings>.
• Input level is too high. See <Input Sensitivity> and adjust.
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