Kenwood KAC-6404 Owner's Manual (pdf) - Page 8

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. (No sound from one side.) (Blown fuse.) The output level is too small (or too large). The sound quality is bad. (The sound is distorted.) POSSIBLE CAUSE SOLUTION • Input (or output) cables are • Connect the input (or output) cables. disconnected. • Protection circuit may be activated. • Check connections by referring to . • Volume is too high. • Replace the fuse and use lower volume. • The speaker cord is shorted. • After check the speaker cord and fixing the cause of the short, replace the fuse. • The input sensitivity adjusting control • Adjust the control correctly referring to is not set to the correct position. . • The speakers wire are connected with • Connect them properly checking the wrong 9 / · polarity. 9 / · of the terminals and wires well. • A speaker wire is pinched by a screw • Connect the speaker wire again so that in the car body. it is not pinched by anything. • The switches may be set improperly. • Set switches properly by referring to . Specifications CEA-2006 KAC-7404 KAC-6404 Primary Power Output Ratings (RMS Watts per channel @ 4 ohms, 1 % THD+N 60 W × 4 40 W × 4 Signal to Noise Ratio (Reference: 1Watt into 4 ohms 80 dBA 80 dBA Audio Section KAC-7404 KAC-6404 Max Power Output 720 W (180 W × 4) 500 W (125 W × 4) Rated Power Output Normal (4 Ω) (20 Hz - 20 kHz, 1 % THD 60 W × 4 40 W × 4 Normal (4 Ω) (DIN : 45324 , +B = 14.4V 60 W × 4 40 W × 4 Normal (2 Ω) (1 kHz, 1 % THD 90 W × 4 60 W × 4 Bridged (4 Ω) (1 kHz, 1 % THD 180 W × 2 130 W × 2 Frequency Response (+0, -3 dB 5 Hz - 50 kHz 5 Hz - 50 kHz Sensitivity (rated output 0.2 V - 5.0 V 0.2 V - 5.0 V Signal to Noise Ratio...94 dB 94 dB Input Impedance...10 kΩ 10 kΩ Low Pass Filter Frequency (-12 dB/oct 50 - 200 Hz (variable) 50 - 200 Hz (variable) High Pass Filter Frequency (-12 dB/oct 80 Hz 80 Hz General KAC-7404 KAC-6404 Operating Voltage 14.4 V (11 - 16 V allowable) 14.4 V (11 - 16 V allowable) Current Consumption ...36 A 19 A Dimensions (W × H × D 330 × 59 × 230 mm 330 × 59 × 230 mm 13 × 2-5/16 × 9-1/16 inch 13 × 2-5/16 × 9-1/16 inch Weight ...2.9 kg (6.4 lbs) 2.7 kg (5.9 lbs) • Specifications subject to change without notice. 8 English