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4/3/2 CHANNEL POWER AMPLIFIER
KAC-6403
INSTRUCTION MANUAL
© B64-3354-00/00 (MV)
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Safety precautions Cleaning the unit 2 WARNING If the front panel gets dirty, turn off the power and To prevent injury or fire, take the following wipe the panel with a dry silicon cloth or soft cloth. precautions: • When extending the ignition, battery, or ground 2 CAUTION wires, make sure to use automotive-grade wires Do not wipe the panel with a hard cloth or a cloth or other wires with a 5 mm² (AWG 10) or more to dampened by volatile solvents such as paint thinner prevent wire deterior
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Installation Self-tapping screw (ø4 × 16 mm) 330 mm 204 mm Ø4.6 Installation board, etc. (thickness : 15 mm or more) 2 CAUTION • Do not install in the below locations; (Unstable location, In a location that interferes with driving, In a location that gets wet, In a dusty location, In a place that gets hot, In a place that gets direct sunlight, In a location that gets hit by hot air) • Do not install the unit under the carpet. Otherwise heat build-up occurs and the unit may be damaged. • Install
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Controls / Indicator 40 4 30 20 10 (W) 1 2 3 4 1 A ch FILTER switch 4 INPUT SENSITIVITY control (A.ch/ B.ch) This switch allow filtering of the speaker output Set this control according to the pre-output level signals. of the center unit connected with this unit, or to the maximum power output of the genuine- • OFF position: accessory car stereo. The original sound without filtering is output. The sensitivities of amplifiers A and B can be • HPF (High Pass Filter) position: adjusted independe
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5 5 Power indicator ■ The protection function is activated in When the power is turned on, the Power indicator the following situations: lights. This unit is equipped with a protection function for If the Power indicator does not light when the protecting this unit and your speakers from various power is turned on, the protection function may accidents or problems that can occur. be activated. Check whether there is any indication When the protection function is triggered, the of trouble. P
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25 Connection ■ Terminal names 67 8 9 0 ! @ 6 Fuse (25 A) ! LINE IN terminal (A.ch/ B.ch) 7 Battery terminal @ Speaker level input terminals NOTE 8 Ground terminal • The genuine-accessory car stereo shall have a 9 Power control terminal maximum power output of no more than 40 W. Controls the unit ON/OFF. • Do not connect the speaker output leads from NOTE a power amplifier (Optional) to the speaker level input terminals of this unit, for this may cause Controls the unit power. Be sure to co
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■ Installation procedure ■ Wiring Since there are large variety of settings and • Take the battery wire for this unit directly from the connections possible according to applications, read battery. If it's connected to the vehicle’s wiring the instruction manual well to select the proper harness, it can cause blown fuses etc. setting and connection. • If a buzzing noise is heard from the speakers when 1. Remove the ignition key and disconnect the the engine is running, connect a line noise fi
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Connection ■ RCA cable or Speaker level input connection (RCA cable Connections) RCA cable* CENTER UNIT (CD receiver, etc.) ! Power control wire (Blue/ White) A channel input B channel input (Speaker level input Connections) Speaker level input cable Cable Color of the connector White A channel Left White/Black Genuine-accessory car Gray stereo A channel (No line output center unit Right Gray/Black etc.) Green B channel Left Green/Black Car fuse box Purple B channel @ Right Purple/Blac
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25 25 25 * Commercially available parts ■ Speaker wire connection (Stereo Connections) A channel 0 0 Left speaker A channel Lead terminal* Right speaker B channel Right speaker B channel Left speaker (Bridged Connections) A channel 0 Speaker (Bridged) B channel Speaker (Bridged) ■ Power wire connection 789 Lead terminal* Terminal cover Power control wire Battery wire* Ground wire* Protective Fuse* Battery English 9
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System examples ■ 4-channel system Front Left speaker L L A CENTER UNIT R R Front Right speaker Rear Left speaker L L B R Rear Right speaker R 1 2 3 ■ 2-channel + Subwoofer system (1) Left speaker (High pass) L L A CENTER UNIT R R Right speaker (High pass) L L Subwoofer (L + R) (Bridged) B R R 1 2 3 ■ 2-channel + Subwoofer system (2) Left speaker (High pass) L L A CENTER UNIT R R Right speaker (High pass) L L Subwoofer (L + R) (Bridged) B R R 1 2 3 10 English
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■ Tri-mode C L L L Subwoofer A (High pass) CENTER UNIT (L + R) (Bridged) R R C C L L L B R R C 1 2 3 ● Principle of Tri-mode Method of frequency band division using a coil and capacitor…in case of 6dB/oct. slope Coil (L): Passes low frequencies and blocks high frequencies. Crossover Frequency (Low pass) 0 dB Capacitor (C): Passes high frequencies and blocks low -3 dB frequencies. (High pass) L C 159 x R L= (mH) fc fc=Cut of Frequency (Hz) Frequency 1590
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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. • Input (or output) cables are • Connect the input (or output) cables. (No sound from one side.) disconnected. (Blown fuse.) • Protection circuit may be activated. • Check connections by referring to . • Volume is too high.
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Specifications Specifications subject to change without notice. Audio Section Max Power Output ........................................................................................................................................................................ 500 W Rated Power Output Normal (4 Ω) (20 Hz – 20 kHz, 1 % THD) ....................................................................................................... 40 W × 4 Normal (2 Ω) (1 kHz, 1 % THD) ..........................
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