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Kenwood KAC-6406 4-channel car amplifier — 40 watts RMS x 4

Item # 113KAC6406

Kenwood makes tough, rugged amplifiers that bring you superior sound quality along with reliable performance.

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Kenwood makes tough, rugged amplifiers that bring you superior sound quality along with reliable performance.

1 question - 2 answers

Item # 113KAC6406

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About the Kenwood KAC-6406

Buck Pomerantz

Reliable performer

Kenwood makes tough, rugged amplifiers that bring you superior sound quality along with reliable performance. Add the Kenwood Sport Series KAC-6406 amplifier to your system, and you'll hear all the tonal color, impact, and detail you've been missing, from the punch of the rhythm section to the shiver induced by your favorite singer's voice.

Reliable performer

Kenwood makes tough, rugged amplifiers that bring you superior sound quality along with reliable performance. Add the Kenwood Sport Series KAC-6406 amplifier to your system, and you'll hear all the tonal color, impact, and detail you've been missing, from the punch of the rhythm section to the shiver induced by your favorite singer's voice.

Versatile power

The KAC-6406 4-channel amp delivers 40 watts RMS per channel to your full-range speakers. This amp will bring new life to your factory speakers, but you'll really notice the difference when you pair it up with new aftermarket speakers. Switch the amp over to 2-channel mode, and you can get great performance from a set of components or a couple of subs with up to 130 watts RMS per channel.

This versatile amp features separate frequency filters for the front and rear channels, along with speaker-level inputs and signal sensing turn-on, so you can put this amp to work in just about any kind of system. Aluminum cover plates protect the amp's connections and controls, giving your installation a neat, professional look.

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Product highlights:

  • 4-channel car amplifier
  • 40 watts RMS x 4 at 4 ohms (60 watts x 4 at 2 ohms)
  • 130 watts RMS x 2 bridged at 4 ohms (4-ohm stable in bridged mode)
  • CEA-2006 compliant
  • switchable high-pass filter (80 Hz, 12 dB per octave) on front (A ch) channels
  • variable low-pass filter (50-200 Hz, 24 dB per octave) on rear (B ch) channels
  • Class AB design and MOSFET power supply
  • preamp and speaker-level inputs
  • signal sensing turn-on eliminates need for remote lead
  • requires 10-gauge power and ground leads — wiring and hardware not included with amplifier
  • fuse rating: 30A x 1
  • 13-1/4"W x 2-3/16"H x 7-15/16"D
  • warranty: 1 year
  • MFR # KAC-6406

What's in the box:

  • 4-Channel amplifier
  • 30 amp ATO fuse (installed)
  • 7" Speaker-level input harness
  • Four 3/4" Self-tapping screws
  • Instruction manual (English/ French/ Spanish)
  • Warranty information

Customer reviews for Kenwood KAC-6406

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More details on the Kenwood KAC-6406

Mark G.

Product Research

Features
Controls
Connections

Features

CEA-2006 Compliant: CEA-2006 is a system of testing and measurement for mobile audio amplifiers. This voluntary standard advocates a uniform method for measuring an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured into a 4Ω load, with 1% or less Total Harmonic Distortion plus noise (THD+N), and over a frequency range of 20 Hz to 20 kHz (for full range amplifiers). Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4Ω. CEA-2006 standards allow consumers to compare car amplifiers and receivers under the same conditions (apples to apples). Using CEA-2006 criteria, the Kenwood KAC-6406 is rated at 40 watts RMS x 4 channels with an 80 dBA signal to noise ratio. The signal to noise ratio at the rated power output (not CEA-2006 conditions) is 100 dB.

2-Ohm Stable: The amplifier can support a 2-ohm load in stereo; the 2-ohm power output is 60 watts RMS x 4 channels.

Bridgeable: Each half of the four-channel amplifier can be bridged into a 4-ohm mono load; the bridged output is 130 watts RMS x 2 channels. If you prefer, just half the amp can be bridged for three-channel operation (40 watts RMS x 2 channels + 130 watts RMS x 1 channel).

Cast Aluminum Heat Sink: The KAC-6406 utilizes a cast aluminum heat sink design to ensure the amplifier stays cool.

Protection circuitry: The amplifier features protection circuits that will turn the amp off in case of the following events:

  • speaker wire short-circuits
  • speaker output contacts ground
  • unit malfunctions and DC is sent to speaker output
  • the amp overheats

Power Indicator: When the amplifier is turned on the Power indicator (on top of the amp) lights up. This indicator turns off with the amplifier, and will turn off if the amplifier goes into protect mode.

Auto Turn-on: When using a speaker level input, the amp will turn on automatically when it senses the input signal.

Controls

Gain: To accommodate the varying range of signal levels from today's factory and aftermarket radios, the KAC-6406 features an adjustable gain control; 0.2-5.0 volts line level (RCA) and 4.0-12.0 volts speaker level.

Crossover: The four-channel amp is separated into two halves, labeled A and B. The A and B sections have independent crossovers:

  • A-Channels: high pass with a fixed 80 Hz crossover point; 12 dB/octave slope; can be turned on or off
  • B-Channels: low-pass with a continuously variable (50-200 Hz) crossover point; 24 dB/octave slope; can be turned on or off
Connections

Power Connections: The power and ground connections are 0.5" wide screw terminals. The remote turn-on screw terminal is 0.35" wide. A Phillips-head or flat blade screw driver (not supplied) is required to tighten/loosen the terminals. Spade connectors are recommended. Minimum 10 gauge wire is required for power and ground.

Speaker Outputs: The four pair of speaker outputs are 0.35" wide screw terminals. A Phillips-head or flat blade screw driver (not supplied) is required to tighten/loosen the terminals. Spade connectors are also recommended for the speaker wires.

Line Level Input: The line input is two pair of stereo RCA jacks (A-channels and B-channels).

Speaker Level Input: A wiring harness is included for the speaker level input.

Fuse: The amplifier uses a 30-amp ATO blade-type fuse.

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Customer Q&A

1 question already asked

Q
No remote wired required?
rodney  Oct 19, 2015
2 answers
A
Remote wire is not required if you use speaker level inputs. Remote wire is required if you use line level inputs. So, this amp will work with aftermarket stereos that have all of the proper connections and, will work with factory stereos that generally don't have all those connections by running it off of the speaker wires directly between the stereo and the speakers.
charles  Jun 08, 2016
A
Nope, remote is wireless
dave  Oct 21, 2015

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