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Crutchfield

Kicker 11DX250.1

Mono subwoofer amplifier — 250 watts RMS x 1 at 2 ohms

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  • Kicker 11DX250.1

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  • Kicker 11DX250.1

  • Kicker 11DX250.1

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Our take on the Kicker 11DX250.1

by Ken Nail
Kicker

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

You want power for your subs. But Kicker DX amplifiers give 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. An inexpensive optional adapter lets this amplifier accept output from factory radios too, so you can hook up the DX250.1 to almost any car.

Delivers up to 250 watts
The DX250.1 mono amp sends 250 watts RMS to your 2-ohm sub, or 140 watts to a 4-ohm sub. The built-in low-pass filter sends only the notes below 80 Hz to your sub, while the subsonic filter removes the super-low frequencies that your sub can't play. A bass boost lets you add some extra bump in your music, and you can add an optional remote bass boost for driver's seat control. You'll also find the set of preamp outputs handy for getting signal to another amp in your system.

Team this amp with Kicker subs and save
Take away the worry of picking the right subs. This Kicker bass package adds a pair of 12" Comp Kicker subs to the amp, while this bass package adds a single 12" Comp sub.

Highlights:

  • mono subwoofer amplifier
  • 140 watts RMS x 1 at 4 ohms (250 watts RMS x 1 at 2 ohms)
  • CEA-2006 compliant
  • Class D amp technology
  • low-pass filter (80 Hz, 24 dB/octave)
  • subsonic filter (25 Hz, 24 dB/octave)
  • selectable bass boost (0, 9 dB at 40 Hz)
  • frequency response: 25-80 Hz
  • preamp and speaker-level inputs (optional wire adapter required for speaker-level inputs)
  • preamp outputs for connection to another amp
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • fuse rating: 15A x 2
  • 10-5/16"W x 2-5/16"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
 

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Performance
RMS Power Output (Watts x Channels)
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140 x 1
Peak Power Output (Watts x Channels)
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N/A
Power at 2 Ohms (Watts x Channels)
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250 x 1
Bridged Power (Watts x Channels)
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N/A
Minimum Impedance Bridged
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N/A
Minimum Impedance Unbridged
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2
Best Frequency Response
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25-80 Hz
THD at Rated RMS Power
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1%
Signal to Noise Ratio
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75 dB
Input Voltage
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14.4v
Features
Amplifier Class
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D
Low-Pass Crossover Frequency
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80 Hz
Low-Pass Slope (dB/octave)
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24 dB/oct
High-Pass Crossover Frequency
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N/A
High-Pass Slope (dB/octave)
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N/A
Bass Boost
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+9 dB
Bass Boost Frequency
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40 Hz
Fan Cooled
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No
Fuse Rating
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30
Speaker Level Inputs
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RCA (adapter req)
Preamp Outputs
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1 pair
Width (inches)
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10-5/16
Height (inches)
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2-5/16
Depth (inches)
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8-5/16
Parts Warranty
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2 Years
Labor Warranty
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2 Years
Product Research
What's in the box?

Download owner's manual

  • Mono amplifier
  • Four 15-Amp ATO blade fuses (2 installed)
  • Four 3/4" Self-tapping screws
  • Two 4-Gauge crimp-on spade connectors
  • Four 12-Gauge crimp-on spade connectors
  • One 18-Gauge crimp-on spade connector
  • Owner's manual (English/ Spanish/ German/ French)
  • Power certification sheet

Scratch & Dent items may be missing non-essential accessories. In some cases the manufacturer's accessories have been replaced with generic equivalents.

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 open the box, verify contents, 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.

Features
Controls
Connections

Features

CEA-2006 Compliant: CEA-2006 is a system of testing and measurement methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for determining an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured over the full frequency range of the amp with 1% or less Total Harmonic Distortion plus noise (THD+N). Signal-to-Noise ratio is measured in weighted absolute decibels at a reference of 1 watt. CEA-2006 allows consumers to compare car amplifiers and receivers on equal footing. Measured under CEA-2006 conditions the Kicker DX250.1 is rated at 140 watts RMS x 1 channel into a 4-ohm load and the signal to noise ratio is 75 dB. Additional specs listed in the manual (but not listed as CEA-2006 compliant) include 250 watts RMS x 1 channel into a 2-ohm load (measured using a 14.4 volt power supply with no more than 1% THD+N) and 95 dB signal-to-noise ratio (measured at the rated power output).

Kicker Livin' Loud Certified Power: The amplifier comes with a certificate that indicates the total maximum wattage measured from the amplifier in the box, along with the model number, serial number, test date, and whether the amplifier passed the total harmonic distortion, signal-to-noise ratio, and protection circuit tests.

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)
  • Audio: the amp turns on when an incoming audio signal is detected

Protection Circuitry: The DX250.1 has protection circuitry that will turn the amp off in the event of overheating, over voltage (over 16 volt input), under voltage (under 10 volt input), and short circuit (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.

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, a speaker wire to RCA adapter is needed (item number 20609ZiSL, sold separately) and the Input Level switch should be set to High.

Fail-Safe Integration Technology (FIT): FIT utilizes isolated differential inputs, rejecting noise and electrical interference for the quietest operation possible. FIT also allows Kicker amps to accept output from nearly any factory or aftermarket head unit.

Controls

Auto Turn-On: Three position switch; choose +12 V, DC Offset, or Audio.

Input Level: Set the two position switch to High (for speaker level) or Low (for line level).

Gain: The input gain is continuously variable, labeled 0 to 11. The gain range is governed by the input level switch; 250mV to 10V for speaker level and 125mV to 5V for line level.

Bass Boost: The bass boost circuit provides a 9 dB signal boost centered at 40 Hz; the bass boost is manually turned on or off.

Subsonic Filter: Frequencies that cannot be reproduced by the subwoofer do not become sound, but unnecessary oscillations causing distortion; these frequencies also waste amplifier power and can damage speakers. The subsonic filter removes inaudible frequencies to improve the performance of the speakers by eliminating this harmful distortion. The 24 dB/octave subsonic filter's crossover point is 25 Hz.

Crossover: The internal low pass crossover is always active (it cannot be bypassed). The crossover point is 80 Hz and the slope is 24 dB/octave.

Connections

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 0.33" wide
  • GND (ground): screw terminal; accepts spade connector up to 0.5" wide
  • Speaker Outputs: screw terminals; accept spade connectors up to 0.32" wide; there are terminals for two subwoofers, internally shorted together
  • Fuses: two 15-amp ATO fuses

Right Side of Amplifier:

  • RCA Inputs: one pair of gold-plated RCA jacks, used for line level or speaker level inputs
  • RCA Outputs: one pair of gold-plated RCA outputs; useful for adding another amp
  • Remote Bass: RJ-25 jack (phone type plug) for use with the an optional ZXRC remote bass level control
 
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Kicker 11DX250.1 Reviews

Average Customer Review:

19 people say:

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Filter by rating:
5 out of 5

Awesome!

Written By Gordo, Bakersfield, CA on Monday, March 17, 2014
Crutchfield Customer Review (What's this?)
 
Got this in a package deal with a Kicker 12" sub. This amp gives more than enough juice needed to power my 12" kicker. Love it
Pros:
All
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Great Amo

Written By David, Princeton, WV on Tuesday, December 31, 2013
Crutchfield Customer Review (What's this?)
 
Great amp. Easy install. Pretty much plug and play
Pros:
Easy to install. Perfect price point.
Cons:
None
Was this review helpful?    Yes | No
 
4 out of 5

Fat Sound

Written By john k, randolph NJ on Saturday, September 07, 2013
 
great amp. Used it to power a Kicker TC-10 box connected to subwoofer outlet of an Alpine 137BT. no instructions or manual but support emailed me the info. pretty easy to set-up.Only driving the subwoofer with it (the other four speakers are off the head for now) but it's in a jeep wrangler.Fat bass & extra punch. Does not work equally well in all 3 modes so my switch is all the way to the right. very happy with results.
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4 out of 5

Kicker 11DX250.1

Written By rlhenry61, Clifton,AZ on Friday, August 16, 2013
Crutchfield Customer Review (What's this?)
 
Great amp for pushing subs in a mild system. I have two, one pushing a Kicker 10" and another pushing a JL 12". It's little light for the 12, but still does a great job. Works perfectly with a single 10.
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5 out of 5

Great little amp

Written By brian chevy malibu, kentucky on Thursday, July 25, 2013
 
I decided to upgrade the factory sound system in my car since I drive roughly an hour a day for the work commute. Put the pioneer app radio 3 and jl audio component speakers. Shopped around for the best price. This made a world of difference. After a few weeks I decided to get a sub and amp. I have little ones that ride with me all of the time that love music. So didn't want anything too loud. Im normally a jl audio believer but didn't want to shell out the money. I did a litle research and purchased a Polk audio 8" sub and box combo. Then I paired it with this amp. Really impressed with the dynamics of this system. Everyone that rides with me swears I have a much higher end system. The output is really impressive considering I only have my amp turned up a little under half way. I have under 200 invested in this set up and it moves the air and my kids always want to ride in my car over my truck or my wife's Avalon.I got this car to keep the miles off my beloved truck. Now I choose to take my malibu on about every trip. I am so impressed that I am going to purchase this same sub and amp combo for our Avalon as my wife is jealous. She has the jbl factory system with an open air sub. It sounds good but missing on the low end. This will he a great anniversary present.
Pros:
Easy to install Quality brand name Value
Cons:
None
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5 out of 5

Kicker 11DX250.1

Written By Anonymous, Riverbank ca 95367 on Tuesday, July 23, 2013
Crutchfield Customer Review (What's this?)
 
Very impressed with the product. The crutchfield team is extremly helpful.
Pros:
Small great power and sound very clean.
Was this review helpful?    Yes | No
 
4 out of 5

Awesome

Written By Anonymous, Newport News, VA on Wednesday, July 10, 2013
Crutchfield Customer Review (What's this?)
 
No frills amp for Kicker subwoofer. Installed in Jeep Wrangler.
Pros:
Small
Cons:
M/A
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5 out of 5

Nice!

Written By Susan, Michigan on Monday, April 08, 2013
Crutchfield Customer Review (What's this?)
 
Nice amp that worked well with an 8 inch Polk sub. Teenage son was grinning ear to ear with his new system!
Pros:
Good sound Easy to install
Cons:
None so far
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5 out of 5

Great for the money

Written By Good buy, Morgantown, ky on Saturday, March 30, 2013
Crutchfield Customer Review (What's this?)
 
Works great with my pair of kicker c10 subs. The amp pushes the pair very good.
Pros:
Easy install.
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5 out of 5

Great Amp!!!!

Written By bg, texas on Wednesday, January 16, 2013
Crutchfield Customer Review (What's this?)
 
Great amp! I have it pushing 2 kicker comp 12's under rear seat of 09 sierra. Im using about 25% power and it hits hard!!
Pros:
Easy install thanks to tech support
Cons:
None
1 out of 1 people found this helpful
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5 out of 5

Kicker 11DX250.1

Written By Robert, El Paso, TX on Monday, August 20, 2012
Crutchfield Customer Review (What's this?)
 
Its a very nice amp with great features and no clipping. Sounds great and clear.
Pros:
Very powerful and cheap. More power than i need.
Cons:
Gets warm if theres no air ventilation under it. I have 1inch spacers to keep a gap between the amp and my seat and now theres no problem at all.
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5 out of 5

Good Stuff

Written By Jjkinsd, San Marcos, CA on Wednesday, May 16, 2012
Crutchfield Customer Review (What's this?)
 
Bought on recommendation from Crutchfield advisor to match up with a single Kenwood shallow mount 150w 8" sub. It's been only 3 weeks but so far I am pleased with the matchup. This a simple amp, no xover settings (built in 80hz lp) just power gain and a bass boost option (great for some stuff, over powering for other) I may opt to get the remote bass control (not offered at Crutchfield?) for a little more control (I listen to a wide variety of music). I can see the potential, as other reviewers have said, for this thing to run warm. I have it under the driver seat, with ample air space beneath it and I believe this will work just fine. I am still dealing with overall fine tuning of the complete system but currently have the gain set to close to max and I am getting solid distortion free sound to the sub.
Pros:
Simple setup. Turn on options. Extra terminals for paralell setups.
Cons:
None
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4 out of 5

Kicker 11DX250.1

Written By Austin D, Memphis TN on Monday, April 02, 2012
Crutchfield Customer Review (What's this?)
 
Beautiful sounding amp. Especially for the size and the price. For a struggling college student, this was definitely a good purchase and should last me well until I'm able to afford a more powerful system.
Pros:
Low price. High Quality.
Cons:
No filter adjustments and the gain control knob is sold separately. And honestly I wouldn't mind getting a decal with the amp. Just saying.
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5 out of 5

Nice sound for the price.

Written By KerryBertrand, Holden, LA on Monday, April 02, 2012
Crutchfield Customer Review (What's this?)
 
Easy install and simple to wire. I am using it behind a crossover just to add a little bump to a factory system.
Pros:
Easy to install
Cons:
None yet.
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5 out of 5

Its ight

Written By Kickeramp, Cailfornia on Sunday, March 04, 2012
Crutchfield Customer Review (What's this?)
 
It's pretty cheap which is good and pushes my 12'' kicker comp , but if you wanna upgrade to a heavier subwoofer then you would need more power. I like the bass boost knob and the low input setting, but the gain control needs to be adjusted with a screwdriver which is fine, but I like to adjust my bass while I am driving. This is an easy fix if you have the gain control remote, but that remote is sold sepratley.
Pros:
Cheap and quality
Cons:
Not much power
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2 out of 5

OK, BUT......

Written By Dave, PA on Saturday, February 11, 2012
Crutchfield Customer Review (What's this?)
 
This amp performs well for the money. The reason I gave it only 2 stars is that the instructions and manual suck. It is a mono Subwoofer amp and there is NO I REPEAT NO instructions on hooking it up to the sub. There are 2 channels on this amp like any other amp. I have no idea if I am losing power due to incomplete instructions. Let me be clear, I have been hooking up car stereos for over ten years, I know what I'm doing. But to have an amp that you pay good money for from a known brand, the least they could do is provide specific instructions on it.
Pros:
Good price for this brand
Cons:
Horrible instructions.
4 out of 18 people found this helpful
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4 out of 5

Simple

Written By Nathan, Elk Grove, CA on Thursday, February 02, 2012
Crutchfield Customer Review (What's this?)
 
Not a bad starter amp, very little controls besides gain and a bass boost. Its a simple mono amplifier with 250 watts of pushing power. I have it hooked up to a single sony explod 12" which seems to be a little bit too much for this little amp to handle, but it still does push it decently. Its probably best with a smaller 8"-10" bass tube or sub. I recommend this amp if you need a little extra "kick" in the low notes of your sound system, just don't expect to knock the mirrors off with this amp. It does however get VERY HOT if you leave it sitting on the carpet or an area with poor airflow. I got a couple 1X2 planks, painted them black to match my carpet and bolted the amp to that so there is an air gap under the amp, it stays much cooler now. I also had a hard time getting it to turn on using the other modes, it would only turn on using a REM wire hooked up to a 12V switched power source behind the head unit.
Pros:
Build quality, price, simplicity
Cons:
Power output, gets very hot if you don't give it a small gap of air to run under it, tempermental with the auto turn on, only worked with REM wire.
1 out of 1 people found this helpful
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5 out of 5

Great amp for my application

Written By Smith, Kent, OH on Saturday, January 28, 2012
Crutchfield Customer Review (What's this?)
 
Installed this in my 91 Miata with 8 inch Kicker subwoofer and Clarion head unit. Much better sound then I anticipated. This was a parcel shelf installation with the amp mounted in the trunk. I previously replaced the factory speakers with little improvement. This current upgrade was much more impressive
Pros:
Price and quality
Cons:
limited adjustments
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5 out of 5

Great small sub amp

Written By Bill H., Oklahoma on Friday, January 27, 2012
Crutchfield Customer Review (What's this?)
 
Great starter amp,great kicker quality at a great price. I have it on a comp 10 and sounds great!
Was this review helpful?    Yes | No
 

Add accessories for the Kicker 11DX250.1

You'll need an amp wiring kit to install your new amplifier, as wiring is not included. See all categories & accessories

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For a more in-depth review and enhanced detailed information on the Kicker 11DX250.1, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_2061DX2501/Kicker-11DX250-1.html ).

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