KAC-816 MONO POWER AMPLIFIER INSTRUCTION MANUAL © PRINTED IN MEXICO B64-1170-00 (EM)
Safety precautions 2WA RN IN G Take the follow ing precautions to prevent fire and avoid personal injury : • When extending the battery cable, or ground cable, use 5mm2 (AWG10) or larger automotive grade cable to avoid cable deterioration or damage to the covering. • Check that no metal objects (coins, tools, etc.) are left inside the unit to avoid short circuits. • If you smell or see smoke, turn the power off immediately and consult your Kenwood dealer.
Installation procedure 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 cables of the units. 4. Connect the center unit and this unit according to the required application. 5. Connect the speaker cables and sigma servo feed back cables. 6. Connect the power cable, power control cable and grounding cable following this order. 7. Install the unit in the car. 8.
Controls Operations of the follow ing control and sw itches are required in accordance w ith the center unit and speakers connected w ith this unit. POWER IN FUSE(20A) ∑ SERVO ΙΙ GND BATT 20 ∑ SERVO ΙΙ SPEAKER OUTPUT P.CON(REMOTE) FUSE(20A) 20 4 1 2 3 15Hz 25Hz OFF INFRASONIC LPF INPUT FREQUENCY(Hz) SENSITIVITY(V) 100 70 50 7 200 1 2 3 4 L 6 SPEAKER LEVEL INPUT LEFT RIGHT LINE IN 0.5 150 5 R 0.3 GND 5 MONO POWER AMPLIFIER 0.
0 RCA cable ground lead t erm inal ! LIN E IN t erm inal @ Speak er level input t erm inals Pow er indicator ■ Pow er indicat or: 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.
Connection ■ RCA cable connect ion 2CA U TION Left output (White) Do not connect cables and leads to both RCA cable input jacks and the speaker input terminals simultaneously, for this may cause malfunction or damage. Right output (Red) RCA cable (Commercially available part) 15Hz OFF 25Hz LPF INPUT FREQUENCY(Hz) SENSITIVITY(V) 100 70 50 200 1 2 3 4 SPEAKER LEVEL INPUT LEFT RIGHT LINE IN 0.
■ Pow er and Speak ers cable connect ion Subwoofer Distribute the speaker cables and sigma servo cables along the same paths. Power control cable POWER IN FUSE(20A) 20 BATT GND ∑ SERVO ΙΙ SPEAKER OUTPUT ∑ SERVO ΙΙ P.CON(REMOTE) FUSE(20A) 20 Power control (REMOTE) lead terminal Terminal cover Battery cable (Yellow) Ground cable (Black) • If a buzzing noise is heard from the speakers when the engine is running, connect a line noise filter (optional) to each of the battery cable.
Sigma servo feed back The sound reproduced through conventional amplifiers is distorted due to the counterelectromotive force produced in the oscillating system of the speaker. The counterelectromotive force is particularly high with the woofer which requires a large drive mass.The sigma servo connection reduces distortion caused by the counterelectromotive force by including the circuit up to the speaker terminals in the negative feedback loop.
Troubleshooting Guide What m ight appear t o be a m alf unct ion in your unit m ay just be t he result of slight m isoperat ion or m isw iring. Bef ore calling service, f irst check t he f ollow ing t able f or possible problem s. PROBLEM POSSIBLE CA U SE SOLU TION No sound. (No sound from one side.) • Input (or output) cables are disconnected. • The connection of the sigma servo terminals is wrong. • Protection circuit may be activated. • The fuse may be blown because the volume was too high.
