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Kenwood KAC-M1814

Compact 4-channel amplifier — 45 watts RMS x 4

Item # 113KAM1814

Kenwood's super-compact KAC-M1814 will add new clarity and impact to the basic sound system of almost any kind...

Kenwood's super-compact KAC-M1814 will add new clarity and impact to the basic sound system of almost any kind...

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About the Kenwood KAC-M1814

Power your speakers on land or sea

Kenwood's super-compact KAC-M1814 will add new clarity and impact to the basic sound system of almost any kind of vehicle on land or water, and it'll fit in a lot of places when space is tight. This marine-rated 4-channel amp will pump up your audio system with 45 watts RMS per channel — that's more than twice the power of most car stereos or marine receivers. The amp uses plastic covers to protect its connections and features a conformal-coated circuit board that keeps out moisture and salt, so the party won't stop just because of a little wetness.

Power your speakers on land or sea

Kenwood's super-compact KAC-M1814 will add new clarity and impact to the basic sound system of almost any kind of vehicle on land or water, and it'll fit in a lot of places when space is tight. This marine-rated 4-channel amp will pump up your audio system with 45 watts RMS per channel — that's more than twice the power of most car stereos or marine receivers. The amp uses plastic covers to protect its connections and features a conformal-coated circuit board that keeps out moisture and salt, so the party won't stop just because of a little wetness.

Works in almost any system

The KAC-M1814 will accept a signal from just about any source, whether you're using RCA cables from an aftermarket receiver or speaker wires from a factory radio. When you use the speaker-level inputs, the amplifier will sense the signal and turn itself on, so you won't need to run a separate remote turn-on lead to the receiver or fuse box. Kenwood goes to great lengths to ensure good sound quality, putting the preamp and output power amp stages on separate circuit boards for better, cleaner performance.

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Product highlights:

  • compact 4-channel amplifier for car, motorcycle, and boat
    • 45 watts RMS x 4 at 2 to 4 ohms
    • 90 watts RMS x 2 bridged at 4 ohms
  • CTA-2006 compliant
  • Class D amp technology
  • variable high- and low-pass filters (50-200 Hz, 12 dB/octave)
  • conformal-coated circuit board — suitable for marine applications
More Info:
  • preamp and speaker-level inputs
  • signal-sensing turn-on on speaker-level inputs eliminate need for a separate remote lead
  • wiring and hardware not included with amplifier
    • 12-gauge power and ground leads recommended
  • fuse rating: 15A x 1
  • dimensions: 8-5/8"W x 1-13/16"H x 3-15/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # KAC-M1814

What's in the box:

  • 4-Channel amplifier
  • One 15-amp ATM mini-fuse (installed)
  • Two 38" RCA stereo patch cables
  • 5' Power and speaker output harness with plug cover
  • Four 5/8" Screws (4x16mm)
  • Two 14" Zip Ties
  • Two 4" Zip Ties
  • 2 Sets of clear self-adhesive control covers
  • Instruction manual (English/ French/ Spanish)
  • Warranty information

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Kenwood KAC-M1814 reviews

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Kenwood KAC-M1814

Crutchfield customer from York, SC on 8/11/2019

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Great

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Great little Marine Amp

Crutchfield customer from Anderson, SC on 8/4/2019

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Quick shipping and great price from Crutchfield for this great little amp. Will be installed into a 1986 Jeep CJ-7

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Good amp. Poor communication.

Greg from Salt Lake City, UT on 8/3/2019

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The amp is great, but I'm pretty disappointed with Crutchfield's lack of communication. I signed up for their "text message updates", but the ONLY message I received was two hours AFTER the package was delivered. Apparently, Crutchfield doesn't know what "message updates" really means. Might as well just order from Amazon. At least they keep you UPDATED on the progress of your package.

Pros: Compact size

Cons: - - - -

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Kenwood KAC-M1814

Crutchfield customer from Ninilchik, AK on 8/3/2019

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Used to replace factory amp in a 1999 Jeep Grand Cherokee, very happy with the result/performance. Very small and cool running due to being a class D amp. Wouldn't hesitate suggesting it to someone wanting a budget amp or easy to conceal unit.

Pros: Very small, high efficiency, clear output.

Cons:

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Super cool small amp with great sound

Crutchfield customer from Scott, LA on 7/23/2019

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Perfect fit under my car seat. There are air ducts for the air condition and this amp was perfect as it did not impenge on this duct.

Pros: Small size good dynamic range

Cons: Not as powerful as some big amps

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Great little amp!

Crutchfield customer from Lawrenceburg, KY on 7/10/2019

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I love this amp! small footprint and not a lot of power draw which was very important to my application as I am still running the original generator in my 1970 VW. This amp really adds some punch to my Kenwood deck and was easy to install

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Kenwood KAC-M1814

Crutchfield customer from Cincinnati, OH on 7/6/2019

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Easy to install. Sounds good.

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Kenwood KAC-M1814

Crutchfield customer from Sanger, TX on 7/4/2019

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Much smaller than I expected.

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Kenwood KAC-M1814

Crutchfield customer from New Braunfels, TX on 6/26/2019

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Awesome

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Kenwood KAC-M1814

Crutchfield customer from White Oak, PA on 6/16/2019

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Significantly improves sound of speakers.

Pros: Sound improvement without running amp to battery. Size.

Cons: Requires cutting factory wires. Worth it though.

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Kenwood KAC-M1814

Crutchfield customer from Torrance, CA on 6/11/2019

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Works great, great price, small footprint. Cleaned up the distortion from the head unit's amp and haven't had a problem at all. Great product for the price!

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Kenwood KAC-M1814

Crutchfield customer from Waxahachie, TX on 5/27/2019

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Easy to to hook up and great power for my speakers on the boat. Would buy it again.

Pros: Small and easy to mount.

Cons: None really

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Kenwood KAC-M1814

Crutchfield customer from Huachuca City, AZ on 5/26/2019

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Easy install like the small size and sounds great

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Kenwood KAC-M1814

Crutchfield customer from Grand Prairie , TX on 5/21/2019

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Easy to install and hookup. Sounds great.

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Kenwood amp

Crutchfield customer from Savannah, GA on 5/20/2019

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Great for the money and size. Fits right in my glove box!

Pros: Easy to install.

Cons:

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Great sound in a compact package.

Joel from Paso Robles, CA on 5/10/2019

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I purchased this amplifier as an addendum to the Sony XAV-AX100 head unit. I had replaced all four speakers in my car at the same time I replaced the head unit and was disappointed with the overall sound output of the system. Granted I drive a Cavalier, but still. I had hoped for much better sound than the original 18 year old speakers had been putting out until the week before this. Anyway, I chatted in and spoke with Drew and he recommended this amplifier to power all four of my new speakers. I noticed it was a brand new model without any reviews, but decided to pull the trigger and go for it. I was not disappointed. I wired all 4 pre-outs from the head unit to the amp, and wired the new amp directly to all four speakers. The power/speaker plug for the amp caught me off guard- no screw terminals to deal with! It also made installation easier with 5 feet of wire attached to the plug. I like the built in high and low pass filters, and turned on the high pass filter for my smaller front door speakers, which cut down on their distortion, due inability to produce much bass at higher volumes. All in all, I'm very happy with this amp. I wanted something that would produce good sound from my replacement speakers, and I can turn up the volume without experiencing any distortion and hear the music with clarity. It's great!

Pros: >Compact >High and low pass filters >Decent power >Comes with 2 RCA cables, and connection cord with 5' of wire

Cons: None yet

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Product Research

Features
Connections

Features

Overview: The Alpine S-A32F 4-channel amplifier is effectively two full range 2-channel amps built into one chassis, labeled A (front) and B (rear). Each section of the amp is bridgeable, so it can be wired as 4-channel, 3-channel, or 2-channel. The amp features a conformal coating on the circuit board to protect it from moisture. This allows you to use the amp for marine applications or on All-Terrain Vehicles (ATVs).

CTA-2006 Compliant: CTA-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 amplifier power uses a DC input voltage of 14.4 volts and the RMS power output is measured over a frequency range of 20 Hz to 20 kHz (for full range amplifiers), with 1% or less Total Harmonic Distortion plus noise (THD+N). Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4 ohms. CTA-2006 standards allow consumers to compare car amplifiers and receivers under the same conditions (apples to apples).

CTA-2006 Specifications:

  • Power Output: 45 watts RMS x 4 into 4Ω
  • Signal to Noise Ratio: 82 dBA (measured at 1 watt into 4Ω)

Other Specifications:

  • Power Output:
    • 2Ω: 45 watts RMS x 4 (14.4 volts, ≤1.0% THD, measured at 1 kHz)
    • Bridged: 90 watts RMS x 2 (14.4 volts, ≤1.0% THD, measured at 1 kHz into 4Ω)
  • Signal to Noise Ratio: 98 dB (at rated power output)

Crossover: The front and rear sections of the amplifier have independent crossover controls. Each can be set to high-pass, low-pass, or off (full range). The crossover points are continuously variable from 50 to 200 Hz; the slope is 12dB/octave.

Protection Circuitry: The amplifier features protection circuitry for thermal overload, DC output, and short circuits. The amp stops operating when it goes into protection mode. (There are no LED indicators.)

Signal Sensing Turn-on: When the amplifier is connected using speaker level inputs, from a factory or aftermarket head unit, the amplifier's signal sensing turn-on feature will turn the amp on when a signal is detected on the input. This eliminates the need to connect a turn-on lead to the amp's Power Control wire.

Connections

Wiring: The amp is equipped with a 22-pin DC connector. The included 5' DC harness, which plugs into the connector, has wires for +12V battery power, ground, power control (turn-on lead), and four speakers.

Power/Ground: The power and ground are 16-gauge wires. The power wire can be connected to the car's fuse box or directly to the battery. The amp is protected by a 15-amp ATM mini blade fuse. If wiring directly to the battery, install an in-line fuse (15-amp minimum) no more than 18" from the battery terminal. The ground wire should be attached to a chassis ground close to the amplifier.

Power Control: The blue/white Power Control wire should be connected to the head unit's remote turn-on lead when an aftermarket unit is used. This wire does not need to be connected if you're using speaker level inputs. The signal sensing turn-on feature will turn on the amplifier when a speaker level input signal is detected.

Line Level Inputs: The amplifier is equipped with two pair of RCA inputs. Two 38" stereo RCA patch cables are included. If using a factory head unit, or a unit without preamp outputs, the RCA inputs will also accept a speaker level signal. Adding a speaker level to RCA adapter is recommended (sold separately) when using speaker level inputs.

Speaker Outputs: The included DC harness has eight wires for connecting four speakers to the amp.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Compact size, price, Kenwood name, reviews. [ Eric  Jul 31, 2019 ]
A
on clearance & marine grade [ Edward  Jul 30, 2019 ]
A
I have been using Kenwood product for years and see their products as reliable and stable when incorporating in my quality of music playing. [ Dorphus  May 08, 2019 ]

4 questions already asked

Q
can this be bridged to 2 channel? do I need a spliter for inputs
[ karl  May 06, 2019 ]
2 answers
A
Yes the amp can be bridged to 90 watts at 4 ohms. You may or may not need RCA splitters depending on your application. You can chat with one of our friendly product advisors to make sure you have everything you need: https://bit.ly/2QNxGQB
[ Cosmo  May 13, 2019 ]  Staff
A
Yes it can be bridged into 2 channel. Yes you need two y splitters 1 female to 2 male
[ vince  May 13, 2019 ]
Q
My stereo has 2 channel pre out puts , how do I wire with four channel amp ?
[ Scotty  May 04, 2019 ]
1 answer
A
There are a few ways to get your radio to work with various 4 channel amps. I recommend contacting an advisor on 1-800-324-9695 to discuss your goals and get a personal recommendation on the best way to connect them My Bio: https://www.crutchfield.com/bio/Paul
[ Paul  May 14, 2019 ]  Staff
Q
What wiring will I need to install this amp? I have a Kenwood Marine radio and wired remote that it will hookup with along with four 6.5" Bazooka speakers. Radio and speakers are installed and working already.
[ Tim  Apr 26, 2019 ]
1 answer
A
I installed this amp in my car. I really appreciated that it comes with its own electrical connector. The connector has a 5 foot length of wiring attached to it. If you can reach power, ground, and all four speakers within 5 feet of this amp, then I don't think you need much more than maybe some power taps for power and ground. It also comes with two 3.3 foot RCA cables (Enough to connect four input channels to the amp). Otherwise, you'll probably need an amp wiring installation kit and some speaker wire.
[ Joel  May 06, 2019 ]

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