• A position: Amplifies only signal input amplifier A with both amplifiers A and B. $ FILTER switch (B.ch) This switch allows to apply high-pass or low-pass filtering to the speaker outputs. • HPF (High-Pass Filter) position: The filter outputs the band of higher frequencies than the frequency set with the "HPF FREQUENCY" control. • OFF position: The entire bandwidth is output without filtering. • LPF (Low-Pass Filter) position: The filter outputs the band of lower frequencies than the frequency set with the "LPF FREQUENCY" control. The speaker output is automatically switched to monaural (L+R). % BASS BOOST switch (B.ch) Setting this switch to "ON" emphasizes the bass. You can use the BASS BOOST for amplifier B only. • ON position: BASS BOOST is +6 dB. • OFF position: BASS BOOST is OFF. ^ HPF FREQUENCY control (A.ch/B.ch) Sets the cutoff frequency when the "FILTER" switch is set to "HPF". & LPF FREQUENCY control (B.ch) Sets the cutoff frequency when the "FILTER" switch is set to "LPF". * INPUT SENSITIVITY control (A.ch/B.ch) 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 genuineaccessory car stereo. The sensitivities of amplifiers A and B can be adjusted independently regardless of the position of the input selector switch. Use the diagram on the right as a guide. NOTE For the pre-output level or the maximum power output, refer to the in the instruction manual of the center unit. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .................. NOTE The control panel locates under the front side cover. Remove the cover to access to its controls for adjustment. (See page 3) English 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 POSSIBLE CAUSE SOLUTION No 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 correct position. • 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 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 .) (20 Hz – 20 kHz, 0.08 % THD) ................................................................................................................................................ 70 W . 4 60 W . 4 Normal (4 .) (DIN : 45324 , +B = 14.4V) ....................................................................................................................................................... 70 W . 4 60 W . 4 Normal (2 .) (1 kHz, 0.8 % THD) .....................................................................................................................................................................100 W . 4 90 W . 4 Bridged (4 .) (1 kHz, 0.8 % THD) ....................................................................................................................................................................200 W . 2 180 W . 2 Frequency Response (+0, –3 dB) ...........................................................................................................................................................................5 Hz – 50 kHz 5 Hz – 50 kHz Sensitivity (rated output) (MAX.) ............................................................................................................................................................................................. 0.2 V 0.2 V Sensitivity (rated output) (MIN.) ...................................................................................................................................................................
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