SUBWOOFER POWER AMPLIFIER KAC-8101D INSTRUCTION MANUAL © B64-3416-00/00 (MV) KAC-8101D_M_English.indd 1 06.1.
Safety precautions 2WARNING To prevent injury or fire, take the following precautions: • When extending the ignition, battery, or ground wires, make sure to use automotive-grade wires or other wires with a 5 mm2 (AWG 10) or more to prevent wire deterioration and damage to the wire coating. • To prevent a short circuit, never put or leave any metallic objects (such as coins or metal tools) inside the unit.
Installation Self-tapping screw (ø4 × 16 mm) Installation board, etc. (thickness : 15 mm or more) 2CAUTION • 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.
Controls / Indicator (W) 40 20 10 1 2 3 4 1 EXPANDER switch When this switch is turned ON the dynamic range is increased. 2 LPF (Low-Pass Filter) FREQUENCY control This control adjusts the frequency band output from this unit. 3 INFRASONIC 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.
6 6 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. ■ The protection function is activated in the following situations: This unit is equipped with a protection function for protecting this unit and your speakers from various accidents or problems that can occur.
Connection ■ Terminal names 40 7 8 9 0 @ 7 Fuse (40 A) NOTE If you can’t find the specified capacity fuse at your store etc., consult your Kenwood dealer. 8 Battery terminal 9 Ground terminal 0 Power control terminal Controls the unit ON/OFF. NOTE Controls the unit power. Be sure to connect it with all the systems. ! Speaker output terminals As this unit accepts speakers with a minimum impedance of 1 ohm, connect speakers with 1ohm or higher impedance to these terminals.
■ Installation procedure ■ Wiring Since there are large variety of settings and connections possible according to applications, read the instruction manual well to select the proper setting and connection. 1. Remove the ignition key and disconnect the negative - terminal of the battery to prevent short circuits. 2. Set the unit according to the intended usage. 3. Connect the input and output wires of the units. 4. Connect the speaker wires. 5.
Connection ■ RCA cable or Speaker level input connection (RCA cable Connections) RCA cable ground terminal # RCA cable* D # GN $ CENTER UNIT (CD receiver, etc.) Left input Right input Power control wire (Blue/ White) (Speaker level input Connections) Cable Color of the connector White Left White/Black Gray Right Gray/Black Genuine-accessory car stereo (No line output center unit etc.) Car fuse box % Battery ACC 8 English KAC-8101D_M_English.indd 8 06.1.
* Commercially available parts ■ Speaker wire connection Lead terminal* ! ! Subwoofer (L + R) 40 ■ Power wire connection 40 8 9 0 Lead terminal* Terminal cover Extension wire* Battery wire* Ground wire* Protective Fuse* Battery English KAC-8101D_M_English.indd 9 9 06.1.
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) disconnected. cables.
