Kicker DXA125.2 (43DXA1252)

250W Max (125W RMS) DX-Series 2 Channel Amplifier

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General Features:

  • DX Series 2 Channel Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 30 watts x 2 chan.
    • 2 ohms: 60 watts x 2 chan.
  • Max power output: 250 watts x 1 chan
  • 2 or Mono channel operation
  • Signal-to-noise ratio: >95dB
  • Built-in electronic crossover for precise speaker matching
  • FIT™ technology
    • Fail-Safe Integration Technology
    • Advanced circuitry for superior power, clarity and dependability
  • KickEQ™variable Bass Boost (0 to +12 dB bass boost at 40 Hz)
    • Allows users to dial in the perfect sound
  • Frequency Response: 10 - 20,000 Hz
  • Variable low-pass filter (50-200 Hz, 12 dB/octave)
  • Variable Bass Boost: 0-12dB @ 40Hz
  • Input Sensitivity:
    • Low Level: 125mV - 5V
    • High Level: 250mV - 10V
  • 8-10 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
  • Dimensions: 8-1/8"W x 7-3/16"D x 2-3/8"H
  • Authorized Internet Dealer
  • 1-Year Manufacturer's Warranty



Check out the 43DXA1252 Owner's Manual



Product History:

Kicker 43DXA1252 thumbnail
(newest, current model)
Kicker 41DXA1252 thumbnail
(previous model, replaced by Kicker DXA125.2 (43DXA1252))
Kicker 11DX125.2 thumbnail
(previous model, replaced by Kicker 2-Channel Amplifier - DXA125.2 (41DXA1252))

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.

120 watts x 1 channels

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.

60 watts x 2 channels
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.

120 watts x 2 channels
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.

250 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 Series
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 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.

250 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.

120 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.
6 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
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.
No
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.

50 - 200 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.

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.
>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 - 12 dB
Total Fuse Rating
The total amperage an amp requires.
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

Authorized Dealer

Authorized Dealer
We're an Authorized Dealer for nearly all the brands and manufacturers we sell. In the rare occasion we are not authorized, we guarantee that the product comes from an Authorized dealer or distributor. As such, we will always assist you even past the return policy to assure you the entire manufacturer warranty is covered in the event you have encounter a manufacturer defect.

What is in the box?

WITB: Amplifiers
A detailed list of the equipment (main product and accessories) included with your amplifier. If special accessories are included in the box, they will be listed and detailed below the main list of equipment.
Other Accessory #1
Standard accessories are included in the main list above; however, this line provides specific details on an additional, unique accessory that is included with the product.
Other Accessory #2
Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.
Other Accessory #3
Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.
Other Accessory #4
Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.
Other Accessory #5
Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.
Paperwork
Paperwork included with the product.

Specials with this Item

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VIP Guarantee

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

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Accessory Tools and Products

Accessories added

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Belva BBSW167 16 AWG Speaker Wire

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

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NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

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Belva BBG3KT CCA 1/0 Gauge Big Three Kit

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240 Amp L Series Alternator for Select 1963-1985 GM Vehicles

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Scosche TK12

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4 Gauge Ring Terminals, 5/16" Opening

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0/1 Gauge Ring Terminals, 3/8" Opening

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PRO Series Classic Short GM Battery Post Shoc-Krome

Side post battery adapter for GM type batteries (Positive or Negative)

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PRO Series Classic Long GM Battery Post w/ Shoc-Krome Plating

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200 Amp Relay Isolator (BIR200)

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120 Amp 4-Post Battery Isolator

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240 AMP 3-Post Battery Isolator

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World's Smallest AFS / Mini ANL Fuse Holder

Accepts 4 gauge or 8-gauge wire

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

No-fail termination and current flow, it helps keep your system protected and running smoothly

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4 Pack of 80 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 80A Nickel Plated Fuses

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4 Pack of 100 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 100A Nickel Plated Fuses

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2 Pack of 100 Amp Nickel-Plated ANL Fuse

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2 Pack of 200 Amp Nickel-Plated ANL Fuse

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2 Pack of 300 Amp Nickel-Plated ANL Fuse

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Gauge Reducer, 1/0 Gauge Input to 4 Gauge Pin

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Product Summary

Manufacturer

Model Number

43DXA1252

Weight

4.38lbs

Internal SKU

43dxa1252

Internal Product ID

116619

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 DXA125.2 (43DXA1252)

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Kicker DXA125.2 (43DXA1252)

250W Max (125W RMS) DX-Series 2 Channel Amplifier

$89.95

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NVX XIV25 V-Series 2-Channel RCA Cable

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

$11.99

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NVX XWS1650 Speaker Wire

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

$19.99

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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.

$69.99

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