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Kenwood KAC-8103D

1000W max. Class D Monoblock Amplifier

Discontinued
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Kenwood KAC-8104D

OUR PRICE: $125.00

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Kenwood KAC-8103D

1000W max. Class D Monoblock Amplifier

$134.99

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  • Class D Monoblock Amplifier
  • Maximum Output Power: 1000 watts
  • RMS Power Output:
    • 300 watts x 1 channel @ 4 ohms
    • 500 watts x 1 channel @ 2 ohms
  • 2 ohm stable
  • Frequency Response: 5 Hz-200 Hz
  • Low-Pass Filter: 50 Hz-200 Hz, 24 dB/Octave
  • Variable Input Sensitivity: 200 mV - 5 V
  • Line Output Terminals for Extension
  • Infrasonic Filter: 15 Hz, 25 Hz, 18 dB/Octave
  • Bass Boost: 0-18 dB
  • Dimensions: 11-1/4" L x 2-1/2" H x 12-1/2" W
  • 1-year SonicElectronix.com 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 - Full Range Channels

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 speakers or subwoofers 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.

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 speakers or subwoofers 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.

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 speakers or subwoofers equals 1 ohm, 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.

Not Stable

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.
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.
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.

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.

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.

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.
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
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.
1%
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.
Yes
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
Subsonic Filter
Allows you to block (filter) ultra-low frequencies that your subs cannot reproduce.
Infrasonic Filter
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.
85 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
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.

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.
Hi-Res Audio Compatible
This feature refers to if the product is capable of Hi-Res Audio (HRA) playback.

Specials with this Item

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Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

Warranty and Return Policy

Parts Warranty Duration
Not warranted
Labor Warranty Duration
Not warranted
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
62%
4 Star
38%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.5
Value
5.0
Features
4.4
Design
4.4
Usability
4.7
Ren

Wyandotte , MI

Overall
Durability
Value
Features
Design
Usability
Damn

October 12, 2007

This amp pushes my JBLs 12's 1200 watt to the max very little cut out but that will be fixed with a capacitor

9 of 11 found this helpful

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Ryan

Lovelandloveland, CO

Overall
Durability
Value
Features
Design
Usability
these amps pound

October 18, 2007

I have one amp each hooked up to my 2 kenwood 12" KFC-3W011 and each one hammers the hell out of my subs my cars so loud my friends wont even ride with me anymore way great system for such a cheap price

8 of 10 found this helpful

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Abraham

Tulare, CA

Overall
Durability
Value
Features
Design
Usability
want boom?

March 13, 2007

Ordered this amp from here at sonicelectronix, next day it was at my door from UPS. I payed for the 3 day shipping it was only 4 bucks more than regular shipping, glad I did...it arrived super fast.

I got this amp going to 2 MTX 12's 4 ohms each running them @ 2 ohms. I tell ya this amp pounds, gets a little distorted, but that could be my subs I'm overpowering them by 100w RMS and I like my gain nearly full blast. Definitely worth the money I spent on it. Plus you get a good name brand (Kenwood) to boot. I replaced a clarion with this amp. I don't know how many watts the Clarion was, but this amp is way better than the Clarion was.
After cruising around for over 2 hours amp blasting away gain close to all the way up and stereo volume almost at 100 the whole time, the amp didn't even get hot at all. I've got an 80amp regular stock alternator and my headlights dim slightly but not as bad as some amps I have owned previously.

I'd say go for it if your looking for an amp around [email protected]

7 of 8 found this helpful

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Alex

Frostburg, MD

Overall
Durability
Value
Features
Design
Usability
Good Value

April 23, 2008

Great value for what you pay for. I had it to a 12 inch Type R and it bangs. Got the best but for the price its hard to beat.

7 of 9 found this helpful

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Cam

Canada

Overall
Durability
Value
Features
Design
Usability
LOUD

August 21, 2007

i got this amp from sonic electronix and i love it!! it shut off on me once when i had the bass turned up all the way for like 10 min. But after that i was deaf anyways. I have it hooked up to one 12" alpine type R and it is PLENTY loud!!! i would recommend this amp to anyone for this price.

6 of 7 found this helpful

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webejamn

kalispell mt

Overall
Durability
Value
Features
Design
Usability
after long use lots of wear and tear........

October 5, 2012

After long use lots of wear and tear, my car finally bit the dust, however my amps still going strong. I drive down dusty roads every day with extreme temperatures in the summer and winter. its been damp, cooked, frozen, dusted, smashed, and it even still looks new once i wiped it down. I'm impressed. I have had this amp for 5+ years pushing 2 e-series 10s and a little extra wattage to my s series 6x9s the sound is crisp and clear with deep lows. Now that my car is gone its time to put it in a 2nd vehicle. I wonder if it will outlast this vehicle too?

6 of 8 found this helpful

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Tyler

Barre, VT

Overall
Durability
Value
Features
Design
Usability
Nice amp

June 9, 2008

My friend has this amp hooked up to his 2 12" kenwoods and it sounds good. The subs are a little under powered but the amp stays cool and is a really nice amp!

6 of 8 found this helpful

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Jeremy

Lancaster, SC

Overall
Durability
Value
Features
Design
Usability
this amp rocks

July 20, 2007

I put this amp not only powers my three sony tens, but cracked my rear window in my ford ranger and made the interior rear view mirror fall off! If thats not enough bass then you need to find a new hobby..

6 of 8 found this helpful

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Paul T

Goose Creek, SC

Overall
Durability
Value
Features
Design
Usability
Great Amp!

January 23, 2008

VERY PLEASED Not one complaint. Amazing amp, exactly what I was looking for. I have a single 12 hooked up at 4 ohms and it sounds great. I highly recommend this, you wont be disapointed at all.

5 of 7 found this helpful

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Trenton

Temple City, CA

Overall
Durability
Value
Features
Design
Usability

November 8, 2007

I have this sub powering a 10" dvc 4ohm cerwin-vega sub in a ported enclosure. It really surprised me considering it only requires 8ga wiring. It's got clean sound for such a small design. one thing you have to remember is not to crank up the amp gain. Just once did it shut down because the car audio shop that installed it had cranked it up as well as the bass boost.

I'm going to put a dual kenwood kfc3011 sub system in a ported enclosure and see how it does with that. So far with my single 10", it fills my entire car with steady bass!

5 of 7 found this helpful

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Taylor

Fulton, NY

Overall
Durability
Value
Features
Design
Usability
Good amp

July 12, 2007

I own this in a Hyundai Elantra powering 2 Kicker CVR's at 4 ohms (300 watts) and even at 100 watt underpowered, it still shakes up my subs. Gets hot sometimes, but thats only when i have the bass cranked with powerful songs. if your looking for a decent amp that will put out power this is a good choice, Kenwood makes good quality stuff.

5 of 7 found this helpful

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Russell

Burnsville, MN

Overall
Durability
Value
Features
Design
Usability
good for price

December 11, 2007

This amp is great for how much I paid for it. It powers my 10" type R without any problems.

2 of 3 found this helpful

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Evan

Overland Park, KS

Overall
Durability
Value
Features
Design
Usability
Kenwood

October 12, 2007

I had this amp for 3 months until it got stolen. Great amp it defiantly gives you the power you want. i had it hooked up to 2 12 in 1200 w kenwood subs and it boomed definatly a great bang for your buck.

2 of 3 found this helpful

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PRO Series Classic Short GM Battery Post Shoc-Krome

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200 Amp Relay Isolator (BIR200)

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ANL/Mini-ANL Fuse Holder with 1/0 or 4 Gauge Input and Output

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Product Summary

Manufacturer

Model Number

KAC-8103D

UPC

019048169983

Weight

9.00lbs

Internal SKU

kac8103d

Internal Product ID

8570

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-8103D