Kenwood KAC-8452 Instruction Manual - Page 7

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 • 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. SOLUTION • 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. • Adjust the control correctly referring to . • 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 . Specifications Specifications subject to change without notice. Audio Section...KAC-8452 KAC-8402 Max Power Output ...800 W 720 W Rated Power Output (+B = 14.4 V) Normal (4 Ω) (20 Hz - 20 kHz, 0.08 % THD)...70 W × 4 60 W × 4 Normal (4 Ω) (DIN : 45324 , +B = 14.4V) ...70 W × 4 60 W × 4 Normal (2 Ω) (1 kHz, 0.8 % THD) ...100 W × 4 90 W × 4 Bridged (4 Ω) (1 kHz, 0.8 % THD) ...200 W × 2 180 W × 2 Frequency Response (+0, -3 dB)...5 Hz - 50 kHz Sensitivity (rated output) (MAX.) ...0.2 V Sensitivity (rated output) (MIN.) ...5.0 V Input Impedance ...10 kΩ Signal to Noise Ratio...≤100 dB Low Pass Filter Frequency (18 dB/oct.) (B channel) ...50 - 200 Hz (variable) High Pass Filter Frequency (12 dB/oct.)...50 - 200 Hz (variable) Bass Boost Circuit (90 Hz) (B channel) ...+6 dB 5 Hz - 50 kHz 0.2 V 5.0 V 10 kΩ ≤100 dB 50 - 200 Hz (variable) 50 - 200 Hz (variable) +6 dB General ...KAC-8452 KAC-8402 Operating Voltage ...14.4 V (11 - 16 V allowable) 14.4 V (11 - 16 V allowable) Current Consumption ...40 A 40 A Installation 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 inch Weight ...5.8 kg (12.8 lbs) 5.8 kg (12.8 lbs) CEA-2006 ...KAC-8452 KAC-8402 RMS Watts per channel @ 4 ohms < 1 % THD+N...70 W × 4 60 W × 4 RMS Watts per channel @ 2 ohms < 1 % THD+N...100 W × 4 90 W × 4 English 7