Kenwood KAC 9104D Instruction Manual - Page 5

Controls p q 30 30 r s v 40W 15W t u v 1 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 (page 3). 2 Illumination 3 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. 4 PHASE switch When this switch is set "180°" (Reverse) the speaker output phase is reversed. 5 BASS BOOST LEVEL control Sets the low frequency level to be compensated. 6 LPF(Low-Pass Filter) FREQUENCY control This control adjusts the frequency band output from this unit. 7 INPUT SENSITIVITY 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. 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. No sound. (Blown fuse.) ✔ Input (or output) cables are disconnected. ☞ Connect the input (or output) cables. ✔ 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 output level is too small (or too large). ✔ The input sensitivity adjusting control is not set to the correct position. ☞ Adjust the control correctly referring to . The sound quality is bad. (The sound is distorted.) ✔ The speakers wire are connected with wrong 9 / · polarity. ☞ Connect them properly checking the 9 / · of the terminals and wires well. ✔ 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. ✔ The switches may be set improperly. ☞ Set switches properly by referring to . Specifications CEA-2006 Primary Power Output Ratings (RMS Watts per channel @ 4 ohms, 1 % THD+N) 500 W × 1 Signal to Noise Ratio (Reference: 1Watt into 4 ohms) 75 dBA Audio Section Max Power Output Rated Power Output (+B = 14.4 V) (4 Ω) (20 Hz - 200 Hz, 0.5 % THD) (4 Ω) (DIN45324, +B = 14.4 V) (2 Ω) (100 Hz, 0.8 % THD) (1 Ω) Frequency Response (+0, -3 dB) Sensitivity (rated output) Input Impedance Signal to Noise Ratio Low Pass Filter Frequency (-24 dB/oct.) Infrasonic Filter Frequency (-18 dB/oct.) Bass Boost Circuit (40 Hz) 1800 W × 1 500 W × 1 500 W × 1 900 W × 1 ≥ 900 W × 1 5 Hz - 200 Hz 0.2 V - 5.0 V 10 kΩ 100 dB 50 - 200 Hz (variable) 15 / 25 Hz 0 - +18 dB (variable) General Operating Voltage Current Consumption Installation Size (W × H × D) Weight 14.4 V (11 - 16 V allowable) 55 A 350 × 59 × 238 mm 13 / × 2 9 / inch 3.4 kg (7.5 lbs) * Specifications subject to change without notice. English 5