Built for high performance yet affordably priced, the Kenwood KAC-729S amplifier will rock your speaker system! Kenwood builds in MOSFET power supplies, extra-large capacitors, copper-shielded EE core transformers, and toroidal noise filters so that you get mammoth reserves of ultra-clean power.

The strikingly rugged exterior will add a stylish touch to your installation, while the built-in low-pass crossover (80 Hz at 18 dB/octave) is handy when you're pushing subwoofers. Use the speaker-level inputs to connect to a factory radio (or any receiver without preamp outputs).

Details:

  • stereo or bridged mono output
  • Tri-way capable (Tri-Way crossover required)
  • 300 watts x 1 in bridged mode
  • 150 watts x 2 at 2 ohms
  • requires 8-gauge power and ground leads — wiring and hardware not included with amplifier
  • 80 Hz selectable low-pass crossover, 18 dB/octave
  • speaker-level inputs
  • 4-way protection circuitry
  • signal-to-noise ratio 100 dB
  • dimensions: 13-3/4"W x 2-5/16"H x 9-7/8"D
  • 1-year warranty

Hands-on research

What's in the box?

Download owner's manual

  • 2-Channel amplifier with two 20 amp fuses
  • Rubber terminal cover
  • 4 Self-tapping screws
  • Instruction Manual (English)
  • Instruction Manual (French/Spanish)
  • Warranty Card

Product Research

Features
Controls
Inputs and Outputs
Specifications

Features

Ground Isolation Circuit: This circuit cancels noise from the input of the negative side of the RCA cable, preventing vehicle electrical noise from interfering with the music.

Quiet Turn-On: This feature allows the amplifier to power up over a period of several milliseconds instead of instantaneously, protecting your speakers from thumps and other sounds that could be damaging.

Internal Crossover: The internal crossover is a 12dB/octave, 80Hz low-pass crossover. The crossover may be turned on for low-pass operation, or the crossover can be turned off for full-range output.

Controls

Right Side Of Amplifier:

  • Filter Switch: Allows you to select full range or 80Hz low-pass crossover operation.
  • Stereo/Mono Switch: Allows you to choose stereo or mono amplifier operation.
  • Input Sensitivity: This variable control allows you to adjust the input sensitivity of the amplifier from 0.2V-5V.

Inputs and Outputs

Right Side Of Amplifier:

  • Line In: Gold-plated stereo RCA jacks
  • Speaker Level Input: Screw terminals (each terminal is 0.25" wide)

Left Side Of Amplifier:

  • Speakers: Gold-plated screw terminals (each terminal is 0.35" wide)
  • BATT (power): Gold-plated screw terminal (terminal is 0.35" wide)
  • GND (ground): Gold-plated screw terminal (terminal is 0.35" wide)
  • P.CON (remote turn-on): Gold-plated screw terminal (terminal is 0.35" wide)
  • Fuse: Two inserted 20-amp fuses

Specifications

Maximum Power Output:

  • Bridged Into A 4-Ohm Load: 600 watts x 1
  • Per Channel Into A 4-Ohm Load: 200 watts x 2

Rated Power Output:

  • Bridged Into A 4-Ohm Load: 300 watts x 1
  • Per Channel Into A 2-Ohm Load: 150 watts x 2
  • Per Channel Into A 4-Ohm Load: 100 watts x 2

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

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