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English 7Troubleshooting GuideWhat 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 followingtable for possible problems.PROBLEM POSSIBLE CAUSE SOLUTIONNo sound.(No sound from one side.)(Blown fuse.)• Input (or output) cables are disconnected.• Protection circuit may be activated.• Volume is too high.• The speaker cord is shorted.• Connect the input (or output) cables.• Check connections by referring to .• Replace the fuse and use lower volume.• After check the speaker cord and fixing the cause of the short,replace the fuse.The output level is too small(or too large).• The input sensitivity adjusting control is not set to the correctposition.• Adjust the control correctly referring to .The sound quality is bad.(The sound is distorted.)• 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.• Connect them properly checking the + / - of the terminalsand wires well.• Connect the speaker wire again so that it is not pinched byanything.• Set switches properly by referring to .SpecificationsSpecifications subject to change without notice.Audio Section............................................................................................................................................ KAC-8452 KAC-8402Max Power Output ....................................................................................................................................................................................................................... 800 W 720 WRated Power Output (+B = 14.4 V)Normal (4 Ω) (20 Hz – 20 kHz, 0.08 % THD) ................................................................................................................................................ 70 W × 4 60 W × 4Normal (4 Ω) (DIN : 45324 , +B = 14.4V) ....................................................................................................................................................... 70 W × 4 60 W × 4Normal (2 Ω) (1 kHz, 0.8 % THD) .....................................................................................................................................................................100 W × 4 90 W × 4Bridged (4 Ω) (1 kHz, 0.8 % THD) ....................................................................................................................................................................200 W × 2 180 W × 2Frequency Response (+0, –3 dB) ...........................................................................................................................................................................5 Hz – 50 kHz 5 Hz – 50 kHzSensitivity (rated output) (MAX.) ............................................................................................................................................................................................. 0.2 V 0.2 VSensitivity (rated output) (MIN.) .............................................................................................................................................................................................. 5.0 V 5.0 VInput Impedance ............................................................................................................................................................................................................................ 10 kΩ 10 kΩSignal to Noise Ratio ............................................................................................................................................................................................................... ≤100 dB ≤100 dBLow Pass Filter Frequency (18 dB/oct.) (B channel) .................................................................................................................. 50 – 200 Hz (variable) 50 – 200 Hz (variable)High Pass Filter Frequency (12 dB/oct.) ........................................................................................................................................... 50 – 200 Hz (variable) 50 – 200 Hz (variable)Bass Boost Circuit (90 Hz) (B channel) .................................................................................................................................................................................+6 dB +6 dBGeneral ...................................................................................................................................................... KAC-8452 KAC-8402Operating Voltage ........................................................................................................................................................................... 14.4 V (11 – 16 V allowable) 14.4 V (11 – 16 V allowable)Current Consumption .....................................................................................................................................................................................................................40 A 40 AInstallation Size (W × H × D) ..................................................................................................................................................................... 380 × 61 × 286 mm 380 × 61 × 286 mm....................................................................................................................................................................................................... 15 × 2-3/8 × 11-5/16 inch 15 × 2-3/8 × 11-5/16 inchWeight .............................................................................................................................................................................................................................5.8 kg (12.8 lbs) 5.8 kg (12.8 lbs)CEA-2006 ................................................................................................................................................... KAC-8452 KAC-8402RMS Watts per channel @ 4 ohms < 1 % THD+N ................................................................................................................................................... 70 W × 4 60 W × 4RMS Watts per channel @ 2 ohms < 1 % THD+N .................................................................................................................................................100 W × 4 90 W × 4 |
