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Kicker 40CWRT102

CompRT shallow-mount 10" subwoofer with dual 2-ohm voice coils

27 Reviews | 4 questions - 10 answers

Item # 2064CRT102

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Our take on the Kicker 40CWRT102

If you're looking for bass for a tight space, Kicker designed their CompRT subs with compact cars, pickup trucks, and even motorcycles in mind. The low-profile 40CWRT102 10” subwoofer performs just like a full-size sub, but without killing all your cargo space. This high-performance CompRT sub stands less than 3-1/2" tall, so your installation options are wide open.

A thin sub with big sub bass

If you're looking for bass for a tight space, Kicker designed their CompRT subs with compact cars, pickup trucks, and even motorcycles in mind. The low-profile 40CWRT102 10” subwoofer performs just like a full-size sub, but without killing all your cargo space. This high-performance CompRT sub stands less than 3-1/2" tall, so your installation options are wide open.

Kicker 40CWRT102

This sub clocks in at less than 3-1/2" deep.

Built with boom in mind

The 40CWRT102 comes equipped with a rigid injection-molded polypropylene cone that won't flex and cause distortion while you're cranking the bass. Its rubber surround will last through years of heavy use, combining with a special-design back and top plate to give you more excursion (which equals more bass) than other skinny subs.   

Made to work with many systems

This sub handles up to 400 watts RMS so make sure you've got a solid amp to power it. You can wire the dual voice coils for either 4- or 1-ohm total impedance, giving you more wiring options when setting up your system. This versatile sub sounds great in sealed or ported enclosures.

Important Note: If you are wiring this DVC sub for low impedance, make sure that your amp is compatible. You can damage or destroy your amp by exceeding recommended minimum impedance.

To drive this single subwoofer, we recommend a mono amplifier rated between 300 and 600 watts RMS at 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

Product Highlights:

  • 10" subwoofer with dual 2-ohm voice coils
  • injection-molded polypropylene cone
  • rubber surround
  • power handling: 100-400 watts RMS (200 watts per coil)
  • peak power handling: 800 watts
  • frequency response: 25-500 Hz
  • sensitivity: 87.2 dB
  • top-mount depth: 3-7/16"
  • sealed box volume: .40 - 2.0 cu. ft.
  • ported box volume: 1.25 - 1.75 cu. ft.
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • One 10" Dual 2-ohm voice coil subwoofer
  • Kicker logo stickers
  • Manual (English/ Spanish/ German/ French)
  • Template on box

Kicker 40CWRT102 Reviews

Average Customer Review(s):

(27 Reviews)

The unexpected...

Chris from Dayton, OH on 9/24/2016

Crutchfield Customer Review (What's this?)

I used two of these subs in a subthump custom (sealed) box for a 2016 Colorado. To say the least, I was impressed. I expected a little bit of bass that would sound, eh... OK. What I got was a large amount of bass that sounds amazing. I haven't used Kicker for years, like since they had paper cones... LOL! This was an unexpected surprise. The only caution I would give you is don't choose an amp that doesn't have the RMS power to run these subs, they are hungry for power but will handle what they are rated for nicely.

Pros: Price, Value, Sound

Cons: They need a lot of power

kicker 10 shallow miunt

BenS from douglasville, GA on 2/22/2016

Crutchfield Customer Review (What's this?)

sounds okay, its kicker. its not top tier in any market. anything you can buy at best by or walmart explains itself. im a memphis fan. but this shallow mount was ideal for my thunderform box. it does an okay job of picking up where my two memphis eights behind the seat leave off

Pros: works in small space

Cons: doesnt have sound quality the better brands have


R from winter haven, FL on 2/21/2016

Crutchfield Customer Review (What's this?)




Awesome Subs

J. Kingston from California on 1/9/2016

Crutchfield Customer Review (What's this?)

Awesome quality. Sounds great!!



Great Sub

Anonymous from Illinois on 1/4/2016

Crutchfield Customer Review (What's this?)

I have 2 10" in a sealed box behind rear seat of F350 crew cab with a 1200 watt kicker amp they sound great for the small space they take up happy with my buy

Pros: They have great range for a low pro sub

Cons: Nothing so far I hope it stay that way

Great for tight places

Edgar from Puerto Rico on 1/2/2016

Crutchfield Customer Review (What's this?)

I bought it at special,but it worth very penny. Great for tight places. Sound good.

Pros: Nice look and sound

Cons: nothing so far.

Amazing Subs

jvan1474 from Alabama on 11/5/2015

Crutchfield Customer Review (What's this?)

These subs are awesome! I installed 2 of them in a box behind my rear seats in my Tacoma. Matched them with a Kicker 800.1 Amp and they will Blow you away! The bass is AMAZING, it will give you a deep tissue massage sitting in the front seats.

Pros: Slim and don't require much space. LOUD. DEEP BASS. Great Build quality

Cons: None

Kicker 40cwrt102

Jarrod from Whitehouse TX 75791 on 6/28/2015

Crutchfield Customer Review (What's this?)

It's a great sounding and easy to install item

Pros: Great

Cons: Great

Best Sub For The Money

FrankieUSAF from Los Angeles, CA on 6/23/2015

Crutchfield Customer Review (What's this?)

This 10 inch ROCKS my 2015 Chevy Cruze. It's loud, clean and crisp. The sound quality is perfect. If you are working with a tight space and/or don't want to sacrifice a lot of cargo room, I definitely recommend this sub with a custom box to fit your vehicle.



Awesome sub

Aarronious from Lansing, Michigan on 4/5/2015

Crutchfield Customer Review (What's this?)

Cost effective upgrade for the system in my work truck.

Pros: Great price for a crisp, loud, clean sub. Clean install and clean look.

Cons: None.


mhenry from Machesney Park on 3/29/2015

Crutchfield Customer Review (What's this?)

Great sounding sub. Great for tight spaces

Pros: Size and price

Cons: None

Awesome Bass

Lee from Mayo, FL on 3/23/2015

Crutchfield Customer Review (What's this?)

Great sub! Hits hard. Plays loud and clear.

Pros: Clarity and pounds hard.

Cons: None.

great sound

Milo from Texas on 3/1/2015

Crutchfield Customer Review (What's this?)

Got two of these in a sealed downfire enclosure under the rear seat of my Chevy crew cab. Have 900w rms @ 2 ohm pushing them. They sound very good with a nice, crisp response. Would recommend these for anyone wanting subs that can handle a decent wattage amp. Looked at many other slim mount subs and these were my only real option without having to buy a new amp, etc. Been very happy with the decision.

Pros: Great sound, clean look. With the use of Kicker's U Lite (free) app, wiring was a breeze.

Cons: Haven't found any.

Excellent punchy subwoofer!

Remy from Clermont, Florida on 2/10/2015

Crutchfield Customer Review (What's this?)

Was in the market for a shallow subwoofer for my 2012 Nissan Frontier CC and after so much research I decided to get this Kicker. Love the nice punch I get with the rest of my system. I'm running it at 1 ohm with 350 watts and is great. I'm sure I can get a more powerful amp and really get more kick out of it, but my space restrictions don't allow me.

Pros: Excellent craftsmanship, price, sound

Cons: None for me as it is what I was looking for for my small truck.

good speaker

andrew from Odessa tx on 1/23/2015

Crutchfield Customer Review (What's this?)

I have not had it very long but so far it hits hard and sounds good and feels like it's more the 600 watts

Pros: Very good quality and fit in the shallow box I had to use for my tundra was good !

Cons: None I can think of

awsome speakers

joseph from lakeland fl on 1/18/2015

Crutchfield Customer Review (What's this?)

Love these speaker fit nicely under seat of my silverado crew cab



Shallow Sub

Anonymous from Avon, OH on 12/29/2014

Crutchfield Customer Review (What's this?)

Fits in small space but packs a nice punch


Cons: None

Kicker 40CWRT102

Clay P from Hinton,Ok on 12/1/2014

Crutchfield Customer Review (What's this?)

Great shallow mount sub cant beat the price hits really hard and easy to install




Omar M from San Antonio Texad on 9/6/2014

Crutchfield Customer Review (What's this?)

You won't be able to tell that these are shallow subs. They sound amazing!!



great sound

Czr from miami on 9/6/2014

Great speakers for the money probably the best shallow mount speakers I've ever seen.

Pros: Space saver

Cons: None


Marc, TX from Texas on 6/16/2014

Crutchfield Customer Review (What's this?)

Don't let "shallow mount" confuse you....if space is a below a back seat or behind a back seat of a truck these are the way to go! I use to have 2 12" woofers behind the seat of a single cab S-10 that didn't hit this hard. These subs won't disappoint. I also used the kicker 1200.1 amp- and I can't see from my rear view mirror they hit sooooo hard!

Pros: Mega sound little package

Cons: Kind of expensive to buy an amp to supply enough power

Very impressive subwoofers

satisfies customer from Dededo, Guam on 4/25/2014

Crutchfield Customer Review (What's this?)

Didn't expect much when installing it, but definitely impressed me once it was hooked up. Very good subwoofer for the price.

Pros: Shallow mount, good power handling, clean sound.

Cons: None

Perfect Subs for a Truck

Anonymous from Tuscaloosa, Alabama on 3/28/2014

Crutchfield Customer Review (What's this?)

I have two of these subs in a small box underneath my backseat. They are hooked up to a 1600 watt amp.The Subwoofer hits hard at the medium to high bass pitches, but has a low raspy sound for the lower pitches, and yes, I know that 10s aren't supposed to hit that low of pitches, but overall its a good woofer.

Pros: Well built Easy to install Good shallow sub for a small box

Cons: none

Kicker woofer

Arvio69 from Nogale, az on 2/2/2014

Crutchfield Customer Review (What's this?)

Great product, sounds awesome but the lack of grill is a short coming

Pros: Sound, power rating

Cons: No grill

Awesome Bass!

Eric from Saint Peters, MO on 10/20/2013

Crutchfield Customer Review (What's this?)

This subwoofer has amazing sound for being in such a small box under the rear seat of a pickup. It sounds like a concert every time I turn it up!

Pros: Shallow mount design allows you to put it almost anywhere

Cons: None

Kicker 40CWRT102

yetti from hillsboro Ohio on 10/4/2013

Crutchfield Customer Review (What's this?)

Very impressed with the bass no one could believe that the subs was only 10"

Pros: Shallow mount fit perfectly sounds amazing

Cons: None

Truck shackers

K from Knox tn on 7/11/2013

2 10s 1000 watt mono kicker dx amp 525 per sub. In custom fiberglass box under back seats ram truck. I was worried about shallow subs.was running full size fosgate p3 12. But kicker subs hit really hard and sounds twice as good. Plenty loud they hit low notes pretty good.I would suggest to any one with limited space.i pound the crap out of them and they handle it very nicely.

Pros: Price,power handling,great sound,depth of speakers for trucks

Cons: So far none


Hands-on research

Product Research


Dual 2-ohm Voice Coils: This woofer features dual 2-ohm voice coils, offering wiring flexibility. When the voice coils are wired in parallel the woofer presents a 1-ohm load. When the voice coils are wired in series the woofer presents a 4-ohm load.

Tinsel Leads: CompRT subwoofers use Spiralead tinsel-lead technology; the tinsel lead wires are woven into the spider to relieve mechanical stress.

Enclosure Compatibility

Shallow-Mount: Kicker's CompRT series is designed to minimize depth, giving you subwoofer options where standard enclosures don't fit. The vent-less, solid-pole design allows the woofer to be mounted directly against the rear wall of a sealed enclosure.

Sealed Enclosure Applications: Sealed enclosures provide the most control over a woofer and provide accurate sonic reproduction, making them suitable to all types of music. Kicker recommends sealed enclosures in the following range:

  • Minimum Enclosure Volume: 0.4 ft³
  • Maximum Enclosure Volume: 2.0 ft³

Vented Box: Vented (or ported) enclosures typically provide better overall efficiency than sealed so they are suitable for use with smaller amplifiers, giving you more bass output from less power. Kicker recommends ported enclosures in the following range:

  • Minimum Enclosure Volume: 1.25 ft³ with a 10.5" x 2" x 20" slot port
  • Maximum Enclosure Volume: 1.75 ft³ with a 10.5" x 2.5" x 20" slot port

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.

Staff Reviews

Product reviews from the Crutchfield Labs

Kicker's CompR and CompRT subwoofers, plus their KX amplifiers, give you the sound and performance you expect from Kicker when you're building a car audio system.

What are the Labs?
Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Shallow depth sub allowed me to build a custom box that would allow me retain enough space in the back of my Jeep to fit not only the sub box, but the Jeep freedom panels when going partially topless. [ Jonathan  Nov 30, 2016 ]
Due to reviews [ David  Dec 21, 2015 ]

4 questions already asked

O yeah that's plenty of room the top mount depth is only little over 3 inches [ Clay  Sep 24, 2016 ]
Yes it should be. I think it's only about 3.75 inches in width. [ Francisco  Sep 23, 2016 ]
Kickers website lists the mountin depth as 3-7/16". Just watch the airspace of the box. [ Tim G  Sep 23, 2016 ]
It depends on your other measurements, I'm running a .4 cu ft box which is way undersized. It still hits hard but It can't hit as hard as I like since it is over pressurizing. [ Cody G.  Sep 23, 2016 ]
I have this sub (mono) in 2011 f150 supper cab, under the passenger side rear seat in about .78cf box, down fire, running it on an Eclipse za1200 amp. I love it, works great for me at all ranges and levels. [ Glen  May 29, 2015 ]
The size and type of your speaker box may be the problem. Not the speaker. A larger ported box will give you long and low sounds. The enclosed box gives you more power (thump). I have the CompRT in a similar box and it can sustain some of the lows. The amp that drives it is a 500 watt RMS. A different type and bigger box is the way to go. [ PAUL R  May 28, 2015 ]
Im using a Hifonics Brutus BRZ1700.1D which is a bit of over kill for the two its pushing. I would suggest any amp that gives you 1200 RMS, one speaker pushes out 600 rms. [ ANDREW  Feb 26, 2015 ]
I have a kicker kx 800.1 driving 2 cwrt102's, they're a good sub I have to admit [ BRIAN  Feb 26, 2015 ]
I have a tundra with pioneer head unit with factory component speakers. I added 1 kicker 10 inch and a 400 watt kicker amp and it's plenty for a truck. Love it [ STEPHEN  Feb 26, 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  Mar 26, 2014 ]  Staff