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Kicker DX1252 (11D125.2)

125W RMS 2-Channel DX Series Class A/B Amplifier

Discontinued
|

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

41dxa1252 thumbnail

Kicker DXA125.2 (41DXA125.2)

OUR PRICE: $89.95

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Also Available as Open Box (Like New) for $79.98


Why Choose Kicker DX Amplifiers:

Kicker Always Exceeds Rated Power

Kicker Performance Audio has been around since 1980 and has been producing amazing products since then. Kicker’s drive to consistently produce products that not only are great but also push the standards of the car audio industry is very apparent in all series of their amplifiers. All Kicker amplifiers are CEA-2006 Compliant, assuring you are receiving a continuous certified RMS power rating. Kicker will always exceed the rated power because Kicker is notorious for under rating their amplifiers. So really you will be getting more power than you actually pay for, which is not true for other lower end performance amplifiers that generally over rate their amplifiers. Kicker amplifiers will provide a choice of three automatic turn-on modes; remote, DC offset, or signal sense, which make them compatible with any car audio system. Along with their high-density convection heat sink for extreme heat dissipation and high efficiency MOSFET power supply, Kickers amplifiers are great way to go when selecting the perfect amplifier for your car audio system.

Kicker FIT Fail Safe Integration Technology

Kicker Fail Safe Technology (FIT):

Kicker has manufactured a new Fail-Safe Integration (FIT) technology into all of their amplifiers. The FIT technology uses isolated differential inputs in order to reject noise or electrical interferences, caused by engines, alternators or any other audio or video component throughout your vehicle. The differential inputs will use a muting circuit that will block out any additional noise that may stream down the line. The FIT technology will help created the cleanest and purest sound possible for any audio system. The Kicker FIT technology is setting the standard for high quality sound.

  • DX Series 2-Channel Class D Car Amplifier
  • RMS Power Rating (14.4V):
    • 4 ohms: 30 watts x 2 chan.
    • 2 ohms: 60 watts x 2 chan.
    • Bridged, 4 ohms: 125 watts x 1 chan.
  • Total RMS power output: 125 watts x 1 chan.
  • High efficiency MOSFET power supply
  • LED power and protect indicators
  • Selectable KickEQ bass boost (0 or +9 dB at 40 Hz)
  • Mono channel operation
  • Preamp RCA outputs
  • Muting circuit cancels out unwanted noise
  • FIT (Fail-Safe Integration Technology) utilizes differential inputs to reject noise and electrical interference for the quietest operation possible and ultimate audio clarity
  • Balanced differential inputs for noise elimination and factory-radio compatibility
  • 3 Automatic turn-on modes (remote, DC offset, signal sense)
  • High-density convection heat sink for extreme heat dissipation
  • Gold-plated RCA level inputs
  • Gold-plated screw terminals
  • Input sensitivity:
    • Low level: 125mV-5V
    • High level: 250mV-10V
  • Fixed high-pass filter (100 Hz, 18 dB/octave)
  • Fixed low-pass filter (80 Hz, 18 dB/octave)
  • CEA-2006 compliant amplifier
  • Frequency response: 20-20,000 Hz
  • Dimensions: 8-1/4"L x 8-5/16"W x 2-1/4"H
  • Actual power exceeds rated power, documented inside each carton
  • 8-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • Also found as: 11DX125-2, DX125-2
  • Item is a part of Kicker ProFit Group
  • Authorized Internet Dealer
  • 2-year Manufacturer's warranty

Extend your Kicker warranty to 3 Years when you install your new Kicker amplifier with a compatible Kicker power kit! For a limited time, you can register your Kicker amplifier and power kit to qualify for an additional year of coverage. This offer is only available through official Kicker dealers and will only last for a limited time. With this amplifier, the following power kits will qualify for the extended warranty program: Kicker 09PK8, Kicker 05CK8, and Kicker 09ZCK8.

2011 Kicker Authorized Online Dealer and eBay Seller

Product History:

Kicker DXA125.2 thumbnail
(newest, current model)
Kicker 11DX125.2 thumbnail
(previous model, replaced by Kicker DXA125.2 (41DXA125.2))

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.

30 watts x 2 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.

60 watts x 2 channels
Bridged RMS 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 RMS power created once an amplifier is bridged.

125 watts x 1 channels

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.
DX (Kicker)
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.
2
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.

125 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.
8 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.
4 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.
2 pairs
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)
High-pass (HP)
High-Pass Crossover Frequency
The high-pass crossover frequency can be a fixed crossover point or a variable crossover range. A variable high-pass crossover allows you to select a specific crossover point which allows frequencies above the set crossover point to pass, while making frequencies below 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.

100 Hz
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.

80 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.
95 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 - 69 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).
No
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.

Warranty and Return Policy

Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
88%
4 Star
0%
3 Star
0%
2 Star
13%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.4
Features
4.5
Design
4.6
Usability
4.6
clinton

Gilmer, TX

Overall
Durability
Value
Features
Design
Usability
Clint C.

September 7, 2011

I would recommend this product for nice clean power. Great amp for entry level speakers that dont require a lot of power. Check out the bridged power! I powered a 150 watt rms rf sub with this and it rocked!!

1 of 1 found this helpful

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Wes

Havre, MT

Overall
Durability
Value
Features
Design
Usability
Great Amp

September 6, 2011

Very pleased with this amp, keeps on putting the watts to my 8" Kicker sub. They work very well together.

1 of 1 found this helpful

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Chris

Montclair, NJ

Overall
Durability
Value
Features
Design
Usability
OMG, this amp really rocks!

July 6, 2014

I thought this would be a nice stop gap. Known manufacturer, affordable, etc. 30 watts, I thought, Thought wrong. This amp is pretty powerful. I know that Kicker amps are under rated but this ridiculous. I think it is putting out closer to 50 watts per channel at 4 ohms nearly double its rated power. This is not a scientific measurement, only my ears. Some of the featurs on this "no frills" amp are pretty good too, choice of three types of turn ons, bass boost, remote turn on for the subwoofer amp. This is all a pleasant surprise. If you need a modest, inexpensive amp, give this one a try..

0 of 0 found this helpful

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ignacio

tampa fla

Overall
Durability
Value
Features
Design
Usability
great amp

June 4, 2014

this amp is the bomb I have this amp with a pioneer 8" 125 watt subwoofer sound very good for the price u can't go worth

0 of 0 found this helpful

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TheBassMan

Enterprise, Al

Overall
Durability
Value
Features
Design
Usability
Great Amp For Doors

April 14, 2014

I have this amp pushing all 4 corners in my ex. cab F-150 on some Memphis PR 5x7's. This amp puts out some very clean power to them at 2ohm stereo. Also have a pair of Power Acoustik NB-1 Tweeters on it as well. Even though not rated for it it will go below 2ohm and not go into protect. Has more than enough power for a lot of door speakers. Only con being the high pass filter is not adjustable.. But the high pass from my head unit brings it to where i want it to be, Great amp for the price.

0 of 0 found this helpful

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Batman

worcester, ma

Overall
Durability
Value
Features
Design
Usability
Perfect

January 19, 2014

I always owned kicker products. I swear by the quality and this product goes to show why I am and will always be a kicker system owner.

0 of 0 found this helpful

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AD Marcos

tolleson, AZ

Overall
Durability
Value
Features
Design
Usability
Great amp for small sub or in my case door speakers

August 7, 2013

I am only running 2 6.5" infiniti speakers in my truck and this amp powers them great! Kicker power is clean power.

0 of 0 found this helpful

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captain

Stillwater, OK

Overall
Durability
Value
Features
Design
Usability
amp is overpriced

March 6, 2013

a friend of mine has this amp in his truck. powering 2 cvr 10s. how this amp gets its rating is beyond me. they must have done some magic over at kicker here in Stillwater, OK to achieve there rms and max ratings. he got a new amp (old school autotek) i borrowed this amp for a week and got tired of it real quick. could not power my SINGLE voice coil JL's at all!

0 of 1 found this helpful

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Accessory Tools and Products

Accessories added

NVX XKIT82 8-Gauge Wiring Kit

In case you didn't know, NVX has top notch wire and this kit has everything you need!

Your Price $49.99

Kicker CK8 8-Gauge Wiring Kit

Get a Kicker wiring kit to match your new Kicker amplifier!

Your Price $49.95

Belva BAK82

Complete 8 Gauge Amplifier Wiring Kit with 2-Channel RCA Interconnects

Your Price $19.99

Kicker PK8 8-Gauge Wiring Kit

Great wire for your awesome new amp! Don't forget the RCA's!

Your Price $29.95

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

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

Your Price $59.99

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.

Your Price $39.99

Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

Your Price $7.99

Small Universal Remote Level Bass Control

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

Your Price $11.99

StreetWires FB8

8 Gauge Firewall Bushing

Your Price $6.95

NVX XDBU4 - Top of the Line!

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

Your Price $17.99

NVX XIV25 V-Series 2-Channel RCA Cable

16.4 ft 2-Channel RCA Audio Interconnect Cable with Twisted Pair Construction

Your Price $11.99

Kicker KI24 K-Series RCA Audio Interconnect Cable

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

Your Price $16.95

NVX XWS1650 Speaker Wire

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

Your Price $29.99

NVX XWS1625 16 AWG Speaker Wire

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

Your Price $13.99

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)

Your Price $12.99

SMD DD-1 Distortion Detector

Set the gain of an audio amplifier quickly and accurately

Your Price $149.99

Scosche SPL Meter SPL1000F

Handheld boomSTICK measures your SPL range from 60 to 135 dB

Your Price $21.99

Browse 1 question and 1 answer
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Why did you choose this?
Sonic Electronix Store
kicker brand
mike l on Sep 4, 2014

Product Summary

Manufacturer

Model Number

11DX125.2

UPC

713034055693

Weight

5.00lbs

Internal SKU

11dx1252

Internal Product ID

29812

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: Kicker DX1252 (11D125.2)