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Kenwood KAC-8104D

1000W Max, Class D Monoblock Amplifier

Discontinued
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This item has been discontinued

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Kenwood KAC-8105D

OUR PRICE: $125.00

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Kenwood Car Audio Store Certified Output and Reliable Efficiency

High powered subwoofer applications tend to generate plenty of heat to the amplifier powering them. Music can only be enjoyed when an amplifier is on, and when an amplifier reaches high temperatures it will usually shut off to protect from it damage. The Kenwood KAC-8104D has built-in self-activating fans to protect from high temperatures so your system can play longer without having forced intermissions. That means even under stressful conditions, the built in fans will aid the heatsink to effectively cool the amplifier.

With an impressive output rating of 300 watts RMS x 1 Channel at 4 Ohms, and 500 watts RMS x 1 Channel at 2 Ohms, this amplifier is CEA-2006 compliant so all wattage specifications are true to industry standard. Combined with their total efficiency and high power output, the Kenwood KAC-8104D is the perfect option for any compatible subwoofer application!

  • Class D Monoblock Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 300 watts x 1 chan.
    • 2 ohms: 500 watts x 1 chan.
  • Max power output: 1000 watts x 1 chan.
  • MOSFET power supply
  • LED power indicator
  • Tuned Bass EQ (0-18 dB bass boost at 40 Hz)
  • Speaker-level inputs with signal sensing for automatic turn-on
  • Preamp RCA outputs
  • Short circuit, DC offset, overload, and thermal protection circuitry
  • Aluminum die cast heat sink
  • Built-in cooling fan
  • Gold-plated RCA level inputs
  • Gold-plated screw terminals
  • Variable low-pass filter (50-200 Hz, 24 dB/octave)
  • CEA-2006 compliant amplifier
  • Frequency response: 5-200 Hz
  • Dimensions: 11"L x 2-5/16"H x 9-3/8"D
  • 4-gauge power and ground leads recommended. Contact us for information regarding a discount on a select amplifier kit when purchased together.
  • 1-year Sonic Electronix warranty

Product History:

Kenwood KAC-8105D thumbnail
(newest, current model)
Kenwood KAC-8104D thumbnail
(previous model, replaced by Kenwood KAC-8105D)
Kenwood KAC-8103D thumbnail
(previous model, replaced by Kenwood KAC-8104D)
Kenwood KAC-8101D thumbnail
(previous model, replaced by Kenwood KAC-8103D)

Power Specifications - Subwoofer Channel

RMS Power @ 4 ohms
The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
300 watts x 1 channels
RMS Power @ 2 ohms
The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 2 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
500 watts x 1 channels
RMS Power @ 1 ohm
The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 1 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
Not Stable

Power Specifications - Full Range Channels

Peak Power @ 4 ohms
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

Peak Power @ 2 ohms
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

Peak Power @ 1 ohm
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

Bridged Peak/Max Power

Bridging refers to combining two channels on an amplifier to create one channel with double the voltage and an increased power output. A 2-channel amplifier will bridge down to 1-channel and a 4-channel amplifier can bridge to create 2-channels. An amplifier is most commonly bridged to drive a subwoofer.

Remember, once you bridge two channels down to one its final impedance will be 4 ohms unless otherwise specified. This rating lists the Peak/Max power created once an amplifier is bridged.

Power Specifications - Subwoofer Channel

Peak Power @ 4 ohm
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

Peak Power @ 2 ohms
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

Peak Power @ 1 ohm
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

Amplifier Specifications

Amplifier Series
This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

D
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
1 - Mono
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.

1000 watts
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

500 watts
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
4 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
0.8%
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Yes
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
1 pair
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Low-pass (LP)
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

50 - 200 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
83 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 18 dB
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
No
Fan Cooled
A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).
Yes
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
40A x 1 
Strappable
Some amplifiers can be "strapped" together in order to increase the output of a single audio channel. These amplifiers feature RCA preamp outputs, allowing you to pass the signal directly from one amp to the other to ensure consistency.
CEA-2006 Compliant
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

Yes
Sonic Certified Amplifier
Sonic Certified amplifiers have been tested by the experts at Sonic Electronix to meet or exceed the wattage ratings provided by the manufacturer. If this is marked as Yes, then you can trust the wattage ratings. If marked as No, then we have tested the amplifier and it did not meet the advertised wattage ratings. If marked as Not Tested, then the Sonic Electronix experts have not yet been able to test the amp.
Amp Bluetooth Connectivity
This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
69%
4 Star
20%
3 Star
6%
2 Star
4%
1 Star
0%

Average Attribution Rating

Durability
4.5
Value
4.7
Features
4.5
Design
4.7
Usability
4.7
David

KY

Overall
Durability
Value
Features
Design
Usability
Nice amp

December 15, 2009

i bought two of these amps to power my 4 mtx 10" subs. the amps delivered nice clean power and is a perfect fit for the subs. i would recommend these subs to anyone good price and great quality

11 of 18 found this helpful

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Tyler Wilson

dundalk maryland

Overall
Durability
Value
Features
Design
Usability
great amp

March 16, 2010

I would definitely recommend this amp. I have had it for 6 months so far, its powering three 10" subs, this amp has enough power to get the job done at an extra level than what you would expect. Very loud, strong hits, I really like that it is simple to install and adjust the sound on. Good amp!

9 of 15 found this helpful

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Rob S

Lawrenceville, GA

Overall
Durability
Value
Features
Design
Usability
Clean Trouble Free Power To my JL Audio 10" Sub.

August 10, 2011

Currently using this amp to power a 10" JL Audio W1V2 Sub in a sealed enclosure in the back of a Scion TC hatchback. I was skeptical with using this amp with some of the reviews stating it runs hot. After getting it setup I am amazed at the power, clarity and clean base response I am getting from the subwoofer. With the volume at medium to high listening levels for over an hour the amp was still cool to the touch. I think this may be due to the fact that I am running it at about 1/2 to 2/3 gain as any more than that would be too much power/base for the interior of my car. I suspect if the amp was run at 2ohm and the gain turned full up and really played loud for an extended period it might get hot, if this is the case then I would say don't blame the amp as your pushing it to the max, just get a larger amp that can power the sub to the level you need without having to max it out all the time. Anyway, this amp when run responsibly is incredible and well worth the price. Completley satisified and would recommend the amp to anyone who uses their subwoofer sensibly and within specifications. Excellent product.

11 of 20 found this helpful

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Q

San Diego

Overall
Durability
Value
Features
Design
Usability
Big boom, little $$

April 6, 2010

The amp gives you great bang for your buck. It has a lot of power and doesn't break the bank.

9 of 16 found this helpful

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heavensonic

ca

Overall
Durability
Value
Features
Design
Usability
this boom boom is great

February 24, 2010

i have had this amp for almost 2 yrs and man this amp pushes my subs like crazy! I like the way it drives...

9 of 16 found this helpful

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Eric

Lynden, WA

Overall
Durability
Value
Features
Design
Usability
Great!

July 8, 2009

This amp works awesome for my 8" MA sub. The speaker level inputs are a good touch for someone who doesn't have moeny to spend on a new deck with pre-amp outputs. I've yet to have any trouble with overheating. Great amp.

5 of 8 found this helpful

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Draz

Garden Grove, CA

Overall
Durability
Value
Features
Design
Usability
Great for a Budget, Not for a powerful system

April 25, 2009

If you are powering not so powerful subs, I would say get this amp. If you are on a serious budget and
Want something that will give you some power, I would say get this amp. If you are wanting serious Bass
That will rattle your windows, I would say look else where.

I purchased this amp because I was on a budget at the time and I really wanted to have something powering my subs, wish I would have waited but for now it works. I am using this amp to power 2 12" Kicker Crv's and those poor subs are under powered. Currently my gain is Turned ALL the way UP and they still are not hitting as hard as they should. I am going to save up for the Kicker 750.1 which I have heard/read/seen is one of the better amps to match these subs...

Pros: Great Price, Great for a smaller system, doesn’t overheat even with gain on Full, Simple design.

Cons: Doesn't give the power needed for a powerful sub


All in all I would recommend this is you're on a budget or if you have a smaller system. But I would much rather save up the hundred or so more dollars for a more powerful amp.

5 of 8 found this helpful

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Brandon

Corbin, KY

Overall
Durability
Value
Features
Design
Usability
unbeatable

August 21, 2008

Since this amp is a Kenwood i knew it would be good, so I bought one. I ran it to 4 10's and it done pretty darn good. But I figured at this price lets get another. So now i got 2 of these badboys but I traded the Lincoln in for a Mustang so I had to lose the big box with 4 10's. I'm pushing two MB Quart 12's now (rhs something) the motor actually comes through the speaker. You guys git em for 119.00 a piece which is somewhat lower than what i paid (naturally) shoulda checked here 1st. Anyway these amps are giving my 12's all they can handle. The great part is I've stayed under $600.00 which was my limit, but now I gotta buy some dynamat. Thanks for a great product at an unbeatable price!!!

5 of 8 found this helpful

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HOT S**T

elk river, mn

Overall
Durability
Value
Features
Design
Usability
Does what is says

April 10, 2011

i have it powering to Kicker CVR 12"s sounds good has never cut out but it get HOT AS S*** like I can't even hold my hand on it, it gets so hot

11 of 21 found this helpful

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Maxwell

sacramento, CA

Overall
Durability
Value
Features
Design
Usability
KAC-8104D

December 13, 2009

Great amplifier. I have been running this amp @ 2 oms for a year it works perfectly very reliable. very good value for the money

9 of 17 found this helpful

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apollo

Charlotte, NC

Overall
Durability
Value
Features
Design
Usability
For the money, cannot go wrong

March 30, 2010

I have owned this amp for almost a year and overall considering the price I would recommend it. I have it hooked up to 2 10" Polk Momo (300 rms) series subs at 4 ohms and have recently put it in my car setup with same speakers but set at 2 ohms. Both configurations run well. The amp has only gone into protect mode once at high volume. Only had to turn it off for 10 seconds and all was well again. It never gets hot unlike my 4 channel Hifonics amp. The one thing that would make it better but I guess for more cost would be to have screw type 4 gauge wire inputs for both the ground and power. Also wish the gain & freq controls were on the top. Once you put the top cover on, the controls are next to impossible to get to.

8 of 16 found this helpful

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MTX

Louisville, Ky

Overall
Durability
Value
Features
Design
Usability
NIce amp

December 4, 2009

I recently bought 2 of these amps to power my 4 mtx subs in my truck. The amps deliver clean power and are easily tweaked. over all its a good amp and is worth the money

6 of 12 found this helpful

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Floyd

St Louis

Overall
Durability
Value
Features
Design
Usability
Awesome amp

September 12, 2009

I just got it hooked up and it pounds my 12"s hard and deep. Still can get that deep bass for not an expensive price. Small size is perfect for putting it in that tight out of site space

5 of 10 found this helpful

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JARED

TUCSON, AZ

Overall
Durability
Value
Features
Design
Usability
GREAT BUY!

September 8, 2009

EXCELLENT BUY! WORKS GREAT! GOOD SOUND!

6 of 12 found this helpful

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Nathan

Forest Lake, MN

Overall
Durability
Value
Features
Design
Usability
Nice Amp

August 1, 2009

Overall this has been a pretty good amp. The only problem I really ran into was it going into safety mode when I turned it up too loud.

3 of 6 found this helpful

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Zach

Midlothian TX

Overall
Durability
Value
Features
Design
Usability
Not so great

May 4, 2009

I have this amp hooked up to One Powerbass 2XL-15D 15 'subwoofer. IT OVERHEATS ALOT. I have the gain turned to about 1/4 power and it will overheat after about 15 min.

6 of 12 found this helpful

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randolph

Bermuda

Overall
Durability
Value
Features
Design
Usability
SWEET

April 13, 2009

THIS AMP SHOCKED ME. IT GIVES NICE BASS BUT IM A MAN WHO LIKES POWER ACOUSTIK AMPS BUT MY MATE WANTED ALL KENWOOD IN HIS CAR. SOUNDS GREAT

3 of 6 found this helpful

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Shafer

Madisonville, Louisiana

Overall
Durability
Value
Features
Design
Usability
great

April 8, 2009

I have this pushing two kicker 12' in a bandpass box and it sounds great, amazing amp.

5 of 10 found this helpful

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Andrew

Norman, OK

Overall
Durability
Value
Features
Design
Usability
Great Amplifier

April 2, 2009

I push my 2 12" Kicker Subwoofers with this amp and it does the job well. I also hooked up a 2 farad Tsunami Capacitor and this amplifier will deliver the power for its wattage rating. Durable product. Easy to set up. had no problems with it. Great low price. highly recommend this amp. I give this amp 5 stars.

6 of 12 found this helpful

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TOOL®

Saint Lucia

Overall
Durability
Value
Features
Design
Usability
Quality Product

January 31, 2009

I got this amp teamed up with the audiocontrol epicenter, kicker kx3 and a 1200W 12" pioneer sub in a vented enclosure tuned to 24hz and this thing rocks. What more can I ask for; looking for quality and not quantity, look no further.

3 of 6 found this helpful

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Logan

Las Cruces, NM

Overall
Durability
Value
Features
Design
Usability
Amazing

January 5, 2009

I bought this and I'm using it with two Kenwood KFC-W3011 1200w 12" subs, and wow, this powers them so well they rattle your teeth loose.

3 of 6 found this helpful

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Rafal

Chicago, IL

Overall
Durability
Value
Features
Design
Usability
Better then KAC 8103D

November 18, 2008

The before amp I blow the voice coils of it and I thought that it supposed to protect itself but it did not. It was kind of my fault that I wired it up using one OHM and it over powered without heating. I learned my lesson and this amp works better and louder and cleaner. The problem that one person had was that the person did not set the amp up because I had the same problem with it turning off after one song. If you set it right it will last a really long time without even heating and still pounding hard. I even was able to set it so that my lights don't dim when it is pounding hard because I don't have a capacitor yet. I love my new amp and how it is smaller than the other one I had. So be careful and follow instructions and remember to wire up the amp right and set it right to make it last longer. At almost max volume, I believe like 75% this thing was shacking everything in my garage and house and my garage is not attached to my house there is a 15' difference between my house and garage. For future reference don't play two amps without a capacitor for long because it will try to kill your car because of the overload on the Alternator. This is only at peak performance of the amps. So now I am running a 400 watt Kenwood four channel amp powering four 60 watt Kenwood speakers and 1000 watts Kenwood duel mono amp powering two 500 watts 12" subs and no overheating if set right.

6 of 12 found this helpful

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Alexander

South Bend, IN

Overall
Durability
Value
Features
Design
Usability
A foxes favorite

October 20, 2008

I Have 2 of these amplifiers in my corolla running two MTX 7515-4 subwoofers, beats hard and sounds good, im not complaining! ^^

2 of 4 found this helpful

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jesus

La Habra, CA

Overall
Durability
Value
Features
Design
Usability
Its Okay

October 1, 2008

at first i was happy to get this amp i have had it for 3 months and now im not too happy this thing overheats to easily and i only had 2 10" KFC-W2511 hooked up to it it sounded really nice but it turned off alot from overheating other than the overheating problem its a really good amp

3 of 6 found this helpful

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Reed

Biloxi, MS

Overall
Durability
Value
Features
Design
Usability
overheats (just like every other kenwood ive seen)

July 11, 2008

i have had this amp for about 4 months i am pushing a 12" cvr dual voice coil running at 2 ohms and this thing will overheat everytime sometimes it takes one song sometimes three songs... granted i do play it loud... but why have it if your not beating it?... but its ridiculous.. so glad i am currently upgrading to a kicker zx1500.1 and three 12" (yes three) cvrs in a crew cab frontier

3 of 6 found this helpful

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Eric

Baytown, TX

Overall
Durability
Value
Features
Design
Usability
recomended by a friend

March 4, 2008

add a little thump to a stock civic lx for about 200, that was the challenge. I wanted to stress quality over quantity on the bass side and room in the trunk was also a consideration. so a bandpass box with a kicker cvr 10 dvc 4ohm paralleled to 2 ohms and a kenwood kac-8104d pushing 500 watts. sound quality is excellent and it will vibrate the trunk, rear window, dash , seats if needed. i originally ordered the 8103d, because of all the good reviews, but due to backorder i was sent the 8104d being a little unsure as it just came out in Feb 08, i decided to give it a try. its about 30% smaller than its predecessor with the same watt rating and also has auto amp on when you use the high level inputs. I ran it really hard for about 20 minutes and it didn't even show any signs of warming, very impressed with this amp now get your own!!!!

3 of 6 found this helpful

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Michael

Pittsburgh, PA

Overall
Durability
Value
Features
Design
Usability
Great amp and delivers true rms power!

February 16, 2012

I use to have this hooked up to a 10" mtx sub and this amp delivers the power! Puts out a true 300w at 4 ohms and made my sub slam! Very reliable, had it for over a year with no problems at all!

7 of 15 found this helpful

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Bisso

Qatar

Overall
Durability
Value
Features
Design
Usability
need help pls

September 2, 2011

In fact I got this amp and I'm so excited to get it started but I don't have any speakers or anything ;p I have only the car and the amp so I need to know how to begin using it.

3 of 7 found this helpful

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Paul

Tewksbury, MA

Overall
Durability
Value
Features
Design
Usability
solid

April 1, 2011

My brother has this amp pushing 2 10" Alpine Type-E's in a center port box and they slam. Most people don't believe it when he says hes only running 500 watts. Does get a little hot but has never overheated even after hours of use. Definitely recommend this amp to anyone

9 of 19 found this helpful

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Taylor

Milford, MI

Overall
Durability
Value
Features
Design
Usability
Good amp for the money

March 15, 2011

This amp pushes out the power it says it does. however my friend has one and it shuts off if he runs it at high volumes for a long time. His subs are wired at 2 ohms so it should be able to handle it.it also gets very hot but overall a solid amp for the price.

5 of 11 found this helpful

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RC

Trafford, Alabama

Overall
Durability
Value
Features
Design
Usability
GREAT AMP!!!!!!!!!!!!!!!!!!!!!!!!!!!

January 12, 2011

I've had this amp for almost a year now I'm running 2 10" Kicker Comps in a band bass box. This amp pushes my 10's so hard that the amp cuts itself off.

3 of 7 found this helpful

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Jojo

San Francisco California

Overall
Durability
Value
Features
Design
Usability
Its an ok amp

February 14, 2010

Sounds pretty strong at 2-ohm but when things get really cranking it shuts off when other amps of the same price range keep going. I switched the wires to 4-ohm, that helped a little but I lost some bass. Kenwood has been really great with helping me, they have great customer service and never leaves me on the back burners. The bottom line is if your not trying to blow out your windows with bass like me then it's an ok amp.

9 of 19 found this helpful

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kenneth r

Gravois Mills, MO

Overall
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Value
Features
Design
Usability
Great bass!

February 11, 2010

I purchased this amp primarily because it matches the KAC-8404 and they look so nice mounted side by side in my truck! It certainly does the job with the JBL CS110! I love good bass! I love my system! I love my system!

8 of 17 found this helpful

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Brandon

Phoenix, AZ

Overall
Durability
Value
Features
Design
Usability
Great Amp!!!!

December 12, 2009

I just bought this amp off of Craigslist for $50 and let me tell you this thing bumps!!!! I have it hooked to a Rockford Fosgate Punch 12" HX2 running 500 watts rms @ 2-ohms. I would highly recommend this amp.

3 of 7 found this helpful

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Jerry rosales

Ventura ca

Overall
Durability
Value
Features
Design
Usability
Best amp I have ever used

October 26, 2009

I bought this amp a couple days ago. I had the amp lift (2) 12" kicker comp subwoofers on a 2004 gmc yukon ... 10 MIN AFTER I GOT IT INSTALLED I GOT PULLED OVER AND GOT A TICKET FOR LOUD MUSIC the police officer told me he could hear it from blocks away.. Sounds excellent

2 of 5 found this helpful

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longlivemetal

Folsom, CA

Overall
Durability
Value
Features
Design
Usability
Good Buy!

October 13, 2009

Bought this AMP to power 2 Kenwood 10in Subs in a Subthump enclosure for my Silverado. It thumps pretty hard. My 80's metal never sounded so good!

6 of 13 found this helpful

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Tyler Durban

Boise Idaho

Overall
Durability
Value
Features
Design
Usability
Very Nice! It should cost more!

June 19, 2009

I'm very happy with the 8104D. Powers a pair of 10 inch medium duty Kenwood subs very well. My subs aren't capable of bass that would blow out windows, and I didn't expect the amp would change that. The amp make the subs hit with good volume and quality though. For the money, I don't think you could do any better. This model doesn't have an internal cooling fan, but I've never had any sound cut out, and it's never felt more than warm to the touch.
It is my first Kenwood amp, but I've installed several amps over the years.
My ratings below take into account the price.

2 of 5 found this helpful

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ATLien

Albany, GA

Overall
Durability
Value
Features
Design
Usability
Well..

February 16, 2009

This thing overheats and cuts off too much at 4 ohms, I cant even imagine at what its like at 2 ohms..the good thing is that when it is pushing my subs they sound great in my ported box! i would recommend this to anyone that is just trying to get by. When it plays, it will rattle ur rear view mirror. have it pushing two kenwood 12s :D. It is very small and fits just about anywhere! hehe.

2 of 5 found this helpful

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jaime

Desert Hot Springs, CA

Overall
Durability
Value
Features
Design
Usability
great amp for anyone who loves bass

July 25, 2008

ok first off i live in the desert so its hot 24/7...so the amp and everything in the car is gonna be before i even start it.

looks- the amp looks sleek and sexy...small but packs a punch...dont be fooled by its size..thats all i can say about that.

durability-this amp hits pretty hard..im running it at 2ohms ..i have two 12' sony xplods in a bandpass box and every thing in my car is falling apart from the bass..but you gotta remember not to turn the gain all the way up..halfway will do...the guy who left the review saying his amp overheats after one song!!!..come on ,,he probably has his gain all the way up. and f.y.i. i beat this amp everytime i drive...my neighbors say they can hear me coming a block away...and at stop lights people are always looking behind them to see whos making all the noise...i love this amp.

bottom line its a sweet amp..if your a bass junkie like me and want some thump when you drive then this amp is for you...if you want to win bass competitions then your gonna need something more powerful than this...but hey 500 watts rms is ok wit me...p.s. careful, police dont like all the noise this amp makes...ive gotten two tickets for disturbing the peace..lol..so pound your subs wisely.

2 of 5 found this helpful

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Aaron

Maple Grove, Minnesota

Overall
Durability
Value
Features
Design
Usability
Kenwood KAC-8104D

October 23, 2010

Had this amp for about a month know on 2 12" kicker comps. Never Cut out or anything! Stays nice and cool and pounds hard! great amp!

8 of 18 found this helpful

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Nick

Manhattan beach, CA

Overall
Durability
Value
Features
Design
Usability
No problems

May 3, 2010

I've had this amp for about 6 months now and have not had one problem with it. works great

8 of 18 found this helpful

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Fred

fresno,ca

Overall
Durability
Value
Features
Design
Usability
non-stop beat!!!!

February 22, 2009

i had many amps before, somehow or another they ended up dying..i guess i like to push these amps to the limit..this amp has the the watts to take it..i drove 10 hours to Oregon non-stop with the beat knocking ,not once did it let me down.

3 of 8 found this helpful

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Supradad

Gastonia, NC

Overall
Durability
Value
Features
Design
Usability
Great improvement

December 22, 2008

This amp is powering a 10" sub woofer in my boat. Prior to this, the boat manufacturer installed the sub without an enclosure and bridged a 4 channel amp to give it 150 watts. I made a tremendous improvement adding this amp and an enclosure for the sub. Can't wait to add a second sub!

Purchased this amp, had it shipped 2nd day air and still paid less than what I would have paid for a similar amp at an electronics store. Will purchase from Sonic Electronix again.

2 of 6 found this helpful

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IGGY

Orang Country,CA

Overall
Durability
Value
Features
Design
Usability
GREAT AMP...... LOVE IT

April 10, 2011

I have this amp pushing my 10" Kenwood sub, and it hits people cant people its a 10".... I recommand this amp to anyone great amp overall and for the price its a great deal.

2 of 7 found this helpful

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1985cutty

Fair Oaks, CA

Overall
Durability
Value
Features
Design
Usability
Great Amp

September 24, 2010

I've had this amp for about a year now, I've had 4 systems since then; 2 12" duals, 2 12" kicker comps, 2 12" kenwoods, and 3 12" rf p1's wired about 1.34ohms and this amp has handled every one of these. I'm definitely keeping this amp around.

2 of 7 found this helpful

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Nick

Columbus, GA

Overall
Durability
Value
Features
Design
Usability
Kenwood Amp

January 14, 2010

This is a real good amp. I could use a more powerful amp but this one pushes my Kicker 12's pretty good. It hasn't overheated since I had it and its mounted on my kicker box just behind my backseat in my Lincoln LS.

4 of 11 found this helpful

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Gentriginus

Walnut Creek, CA

Overall
Durability
Value
Features
Design
Usability
Solid amp

December 20, 2009

Im using this to push a 12" P3, and this definitely gets the job done. I'm breaking the sub and the whole car rattles at half volume. Powers the sub really well, and has yet to overheat. The red and blue lights on the amp look tight in my trunk too

4 of 11 found this helpful

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Floyd

St Louis

Overall
Durability
Value
Features
Design
Usability
awesome amp

September 14, 2009

I just got it and love it. It hits hard, Got it pushing my lanzar max12s and my back windows flex. Highly recommended

5 of 13 found this helpful

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Desmond

Appomattox, VA

Overall
Durability
Value
Features
Design
Usability
great for price

February 7, 2010

this amp is great coming from some one with a kicker and mtx amps
just make sure that you have good wires and a cap

7 of 18 found this helpful

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Accessory Tools and Products

Accessories added

Stinger SK4641 4 Gauge Wiring Kit

Get a high quality amp kit from Stinger to get the most from your new amp!

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Belva BAK42 4 Gauge Amplifier Installation Kit

Great amps need great wire at a great price. This amp kit has everything you need!

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NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

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Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

Get all you need including wire cutters to upgrade your power and ground wire.

Your Price $151.99

Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

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Small Universal Remote Level Bass Control

The Scosche RLC is a smaller universal bass remote that connects via RCA inputs.

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StreetWires FB4

4 AWG / 4 Gauge Firewall Bushing

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NVX XDBU4 - Top of the Line!

Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs

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Kicker KI24 K-Series RCA Audio Interconnect Cable

4 Meters (13 ft.) 2-Channel K-Series RCA Audio Interconnect Cable

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NVX XWS1225 12 AWG Speaker Wire

25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

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NVX XWS1625 16 AWG Speaker Wire

25 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

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Belva BBSW127 12 AWG Speaker Wire

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $14.99

Belva BBSW167 16 AWG Speaker Wire

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

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The Install Bay IB-CAP1F

True 1.0 Farad Car Audio Capacitor for up to 1000W Max

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e2 ECAP1 by Scosche - Mid-Level 1 Farad

Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max

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Rockford Fosgate RFC1D - Top of the Line 1 Farad

Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max

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AudioControl THE EPICENTER-GRAY

Maximize Your Bass Potential with an Audio Control’s legendary Bass Restoration Processor

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Maximize Your Bass Potential with an Audio Control’s legendary Bass Restoration Processor

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SMD DD-1 Distortion Detector

Set the gain of an audio amplifier quickly and accurately

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Scosche SPL Meter SPL1000F

Handheld boomSTICK measures your SPL range from 60 to 135 dB

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Product Summary

Manufacturer

Model Number

KAC-8104D

UPC

019048175977

Weight

9.00lbs

Internal SKU

kac8104d

Internal Product ID

11796

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Kenwood KAC-8104D