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2-channel car amplifier 30 watts RMS x 2
Our take on the Kicker 11DX125.2 by Crutchfield's Buck Pomerantz
Boost your music's power
For some people, great music is what makes life worth living. Kicker built their DX125.2 2-channel amp to send 30 watts RMS each to a pair of speakers, so you can feel the musical joy too — all from an amp with a footprint less than the size of a piece of computer paper. You can also switch the amp over to 1-channel mode to run a subwoofer with 125 watts RMS of bass goodness. Use the built-in high- and low-pass filters to tailor the amp's output so your speakers sound their best. A bass boost adds some extra bump to your tunes.
Isolates and eliminates noise
You want lots of power for your speakers, but this Kicker DX amp gives you something extra — clean power. Kicker's FIT™ — Fail-Safe Integration Technology — rejects noise from alternators, audio/video gear, and other car electronics for crisp, clean operation, and accepts a wide range of signals so you can hook up the DX125.2 to almost any stereo.
Works perfectly as a sub amp. More than enough power for what I need.
JD, Aspen, CO
What's in the Box:
- 2-Channel amplifier
- Two 15-Amp ATO blade fuses (1 installed/1 spare)
- Two 4-gauge crimp-on barrier spade connectors
- Four 12-gauge crimp-on barrier spade connectors
- One 14-gauge crimp-on barrier spade connector
- Four 3/4" Self-tapping screws
- Owner's manual (English/ Spanish/ German/ French)
- Power certification sheet
- 2-channel car amplifier
- 30 watts RMS x 2 at 4 ohms (60 watts RMS x 2 at 2 ohms)
- 125 watts RMS x 1 bridged at 4 ohms (4-ohm stable in bridged mode)
- CEA-2006 compliant
- selectable low-pass filter (80 Hz, 18 dB/octave)
- selectable high-pass filter (100 Hz, 18 dB/octave)
- selectable bass boost (0, 9 dB at 40 Hz)
- Class AB amp technology
- differential-balanced inputs eliminate noise from your vehicle's electrical system
- preamp and speaker-level inputs (speaker-level input requires an optional adapter)
- 8-gauge power and ground leads recommended wiring and hardware not included with amplifier
- fuse rating: 15A x 1
- 8-3/8"W x 2-1/4"H x 8-5/16"D
- warranty: 2 years (extends to 3 years when purchased with either a Kicker single amp wiring kit or a Kicker multi-amp kit)
- Our 60-day money-back guarantee
Kicker 11DX125.2 Reviews
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Features and Specs
|RMS Power Output (Watts x Channels)||
30 x 2
|Peak Power Output (Watts x Channels)||N/A|
|Power at 2 Ohms (Watts x Channels)||60 x 2|
|Bridged Power (Watts x Channels)||125 x 1|
|Minimum Impedance Bridged||4|
|Minimum Impedance Unbridged||2|
|Best Frequency Response||20-20k Hz|
|THD at Rated RMS Power||1%|
|Signal to Noise Ratio||84 dB|
|Low-Pass Crossover Frequency||80 Hz|
|Low-Pass Slope (dB/octave)||18 dB/oct|
|High-Pass Crossover Frequency||100 Hz|
|High-Pass Slope (dB/octave)||18 dB/oct|
|Bass Boost||+9 dB|
|Bass Boost Frequency||40 Hz|
|Speaker Level Inputs||RCA (adapter req)|
|Parts Warranty||2 Years|
|Labor Warranty||2 Years|
CEA 2006 Compliant: The Kicker DX125.2's power and signal to noise ratio are measured according to CEA 2006 standards (Consumer Electronics Association). These standards allow you to accurately compare the specifications of all CEA 2006-compliant amplifiers, even if they are different brands. Manufacturers who adhere to the standards can display the CEA 2006 logo on their products and packaging. The rated power output is 30 watts RMS x 2 channels into 4Ω (20 Hz-20 kHz, <1% THD+N). While the CEA 2006 S/N is 84 dB (measured at 1 watt), the S/N at rated power is >95 dB.
Kicker Livin' Loud Certified Power: The amplifier comes with a certificate that indicates the total maximum wattage of the particular amplifier, along with the model number, serial number, tested date, and whether the amplifier passed the total harmonic distortion, signal-to-noise ratio, and protection circuit tests.
Protection Circuitry: The DX125.2 has protection circuitry that will turn the amp off in the event of overheating, over voltage (power input), under voltage (power input), short circuit (speaker output), and over current (speaker output). If the Protection LED on the left side of the amp illuminates red, the protection circuit has engaged and the amp will not play until the problem is resolved.
Fail-Safe Integration Technology (FIT): To accommodate the varying range of signal levels coming from today's factory and aftermarket radios, the DX125.2 utilizes Fail-Safe Integration Technology (FIT), offering isolated differential inputs for significant noise reduction, and compatibility with virtually any factory radio.
Speaker Level Input: High level inputs can be used when the source device doesn't have preamp level outputs. The same RCA inputs on the amp are used for either speaker level or line level connections. When a speaker level signal is used, speaker wire to RCA adapters are needed (item number 20609ZISL, sold separately) and the Input Level should be set to High.
Gain Control: With the Input Level Control switch at the appropriate setting, you can set the rotary Gain Control to match the output of the source unit. The Gain Controls are adjusted with a flat-head screwdriver and can be set between 0 and 11.
Input Level: The input level control is switchable; when set to Low, the amp can accommodate a line level input signal of 125mV-5V, on High, the amp will accept a 250mV-10V speaker level signal.
Auto Turn-On: The Auto Turn-On switch offers three options:
- +12 V: the amp turns on when +12 volts is applied to the remote terminal
- DC Offset: the amp turns on when a 6 volt surge is detected on the signal inputs (from a speaker level source); in this mode the amp's remote terminal acts as a +12 volt output to turn on another component
- Audio: the amp turns on when an incoming audio signal is detected; in this mode the amp's remote terminal acts as a +12 volt output to turn on another component
Crossover: The crossover can be set for low-pass, high-pass, or full-range operation. The low-pass crossover point is 80 Hz and the high-pass crossover point is 100 Hz; the crossover slope is 18 dB per octave.
KICKEQ Bass Boost: The bass boost circuit switch (on/off) provides a +9 dB signal boost at 40 Hz.
Left Side of Amplifier:
- +12V (power): screw terminal; accepts spade connector up to 0.5" wide
- REM (remote turn-on): screw terminal; accepts spade connector up to 0.325" wide
- GND (ground): screw terminal; accepts spade connector up to 0.5" wide
- Speaker Outputs: one pair of screw terminals; accept spade connectors up to 0.325" wide
- Fuse: one 15-amp ATO fuse (factory installed)
Right Side of Amplifier:
- RCA Inputs: one pair of RCA input jacks
Extended Warranty: Kicker will add a year to the standard two year warranty (for a total of three years) when any matching Kicker amplifier wiring kit is used with this amp (8 gauge minimum). Both the amp and wiring kit should be purchased on the same order and the usual warranty limitations apply (covers manufacturing defects, must be purchased from an authorized Kicker dealer, etc.).
Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.
4 questions already asked
Yes this is normal, I'm running it with my 6.5 JBL's and I have to turn the gain all the way down. I'm going to go with a different amp. [ CEDRIC Feb 03, 2015 ]
I am using it to push ADS dual 6.5 inch subs. No issues. No rattling. It works great for me. [ JOHN Feb 03, 2015 ]
We have it pushing a 10"sub and have not experienced the rattle you mention. It provides clear, powerful performance. [ THOMAS Feb 03, 2015 ]
I have the amp wired in bridged mode going to a cheap 4ohm sub and it sounds ok just feels underpowered. Id check the RCA connectors, ground and not to have your power cable (from battery) run in the same place as your RCA wires [ SAMUEL Feb 02, 2015 ]
Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Krissy Dec 28, 2014 ] Staff
Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Krissy Dec 03, 2014 ] Staff
The amp is rated down to 2 omhs in stereo mode but only 4 in bridged mode. [ Charlie Aug 02, 2014 ]