Kenwood KAC-728 Instruction Manual

Power amplifier


B64-1360-00 (EM)


Table of Contents

Summary of Contents for Kenwood KAC-728

  • 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: Protection Function

    Protection function This unit is equipped with a protection function for protecting this unit and your speakers from various accidents or problems that can occur. When the protection function is triggered, the Power indicator goes off and the amplifier stops operating. Power indicator: When the power is turned on, the Power indicator lights.
  • Page 4: Controls

    Controls Operations of the following control and switches are required in accordance with the center unit and speakers connected with this unit. KAC-728 KAC-628 KAC-528 KAC-728 KAC-628 KAC-528 OPERATION FILTER STEREO MONO(Lch) LINE IN INPUT SENSITIVITY(V) OPERATION FILTER LINE IN...
  • Page 5 4Ω or greater. 2CAUTION The rated input of the speakers should be no less than the maximum output of the amplifier. Otherwise malfunction may result. 2 : KAC-728) (25 A 1 : KAC-628) (15 A 1 : KAC-528)
  • Page 6 Connection 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. RCA cable ground terminal To Power control (REMOTE) terminal CENTER UNIT (Cassette receiver, CD receiver, etc.) RCA cable ground terminal...
  • Page 7 Examples: Stereo Connections (4 Ω ) Model KAC-728 200 W or greater KAC-628 100 W or greater KAC-528 70 W or greater...
  • Page 8 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 IN BATT Power terminal Battery cable (Commercially available parts) Protective Fuse Battery 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 9: Installation

    Example: One Power Amplifier Is Used Model Maximum Current Drawn KAC-728 28 A KAC-628 19 A KAC-528 16 A 50 A Installation • Since the power amplifier has no parts which require operation, it can be installed at a position away from the driver’s seat without any hindrances.
  • Page 10: System Examples

    System examples Full-range 2-channel system KAC-728/528 OPERATION FILTER CENTER UNIT STEREO MONO(Lch) KAC-628 OPERATION FILTER Switch setting STEREO MONO(Lch) High-power full-range 2-channel system KAC-728/528 OPERATION FILTER CENTER UNIT STEREO MONO(Lch) KAC-628 OPERATION FILTER Switch setting STEREO MONO(Lch) Full-range 2-channel + Subwoofer system...
  • 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 ...KAC-728 Max Power Output (4 Ω) Normal ...200 W Bridge ...600 W Rated Power Output (4 Ω) Normal (DIN45324, +B=14.4 V) ...100 W Bridge (1 kHz, 0.8 % THD) ...300 W Rated Power Output (2 Ω)

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