Kenwood KAC KAC-648 Instruction Manual

Kenwood kac-648 4-channel power amplifier instruction manual
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KAC-648
4-CHANNEL POWER AMPLIFIER
INSTRUCTION MANUAL
B64-1364-00 (EM)

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  Summary of Contents for Kenwood KAC KAC-648

  • Page 1 KAC-648 4-CHANNEL POWER AMPLIFIER INSTRUCTION MANUAL B64-1364-00 (EM)
  • Page 2: Safety Precautions

    • To prevent short circuits when replacing a fuse, first disconnect the wiring harness. NOTE • If you experience problems during installation, consult your Kenwood dealer. • If the unit does not seem to be working right, consult your Kenwood dealer. Cleaning the unit...
  • Page 3: Installation Procedure

    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 speaker cables. 5.
  • Page 4 Controls This is a 4 channel amplifier including 2 stereo amplifiers in a body. One amplifier is referred to as amplifier A and the other is amplifier B. This unit is compatible with a large variety of systems by combining the switches and functions described in the following. FUSE(25A) 2 3 4 FILTER...
  • Page 5: System Examples

    ! LINE OUT terminal These jacks output respectively the signals input to amplifiers A and B. They always output the stereo signals regardless of the position of the OPERATION switch. @ RCA cable ground lead terminal # 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...
  • Page 6 System examples High-pass + Subwoofer system FILTER OPERATION STEREO MONO(Lch) INPUT SELECTOR CONTROL A CONTROL FILTER OPERATION (Lch) STEREO MONO High-power 2-channel system FILTER OPERATION STEREO MONO(Lch) INPUT SELECTOR CONTROL A CONTROL FILTER OPERATION (Lch) STEREO MONO Tri-mode FILTER OPERATION STEREO MONO(Lch) INPUT SELECTOR...
  • Page 7 Connection Power cable connection 2WARNING To prevent fire caused by a short in the wiring, connect a fusible link or breaker nearby the battery’s positive terminal. Power terminal Terminal cover Battery cable Power terminal Connect to their respective terminals the power control cable, power supply cable, and ground cable, all of which pass through the associated terminal cover.
  • Page 8 Connection Speakers cable connection (Stereo Connections) A Left output POWER IN SPEAKER OUTPUT FUSE(25A) BATT P.CON(REMOTE) B Left output (Bridged Connections) SPEAKER OUTPUT POWER IN FUSE(25A) BATT P.CON(REMOTE) Speaker Selection • The rated input power of the speakers that are going to be connected should be greater than the maximum output power (in Watts) of the amplifier.
  • Page 9 Examples: Stereo Connections (4 Ω ) Model KAC-648 50 W or greater (4 ) (4 ) Maximum output of Combined the amplifier impedance RCA cable connection 2CAUTION 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.
  • Page 10 Connection Speaker level input connection Connect the unit by inserting it in the connection between the genuine-accessory car stereo and speakers. 2CAUTION 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. To Power control (REMOTE) terminal FUSE(25A)
  • Page 11: Troubleshooting 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. PROBLEM No sound. (No sound from one side.) The output level is too small (or too large).
  • Page 12: Specifications

    Specifications Specifications subject to change without notice. Audio Section Max Power Output (4 Ω) 4 Channel Mode...50 W 3 Channel Mode ...50 W 2 Channel Mode...140 W Rated Power Output (4 Ω) 4 Channel Mode ...25 W 3 Channel Mode ...25 W 2 Channel Mode ...70 W Rated Power Output (2 Ω) 4 Channel Mode ...35 W...