Kicker 40CWRT82

CompRT shallow-mount 8" subwoofer with dual 2-ohm voice coils

Item #: 2064CWRT82

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6 Reviews | 3 questions - 5 answers

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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 40CWRT82 8” subwoofer performs just like a full-size sub, but without killing all your cargo space. This high-performance CompRT sub stands less than 3" tall, so your installation options are wide open.

Kicker 40CWRT82

This sub clocks in at less than 3" deep.

Built with boom in mind

The 40CWRT82 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:

  • 8" 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: 30-500 Hz
  • sensitivity: 84.8 dB
  • top-mount depth: 2-5/8"
  • sealed box volume: .20 - 1.25 cu. ft.
  • ported box volume: 1.25 - 1.75 cu. ft.
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's a component sub and why would I want one?

A component sub is simply a speaker that's designed to reproduce bass once it's installed in a compatible enclosure. Think about the impact of a movie soundtrack in a big theater or even in your own home HDTV setup. A component sub can add the same kind of power to the music in your car. And a car sub is not all about the boom that you hear on a street corner (although that's cool too) - you can pair a component sub with your choice of enclosure to get bass just the way you like it, from tight and punchy to fat and loose. And once you experience music in your car with a well-tuned subwoofer, you'll never go back.

Hands-on research

What's in the box?

Download owner's manual

  • One 8" Dual 2-ohm voice coil subwoofer
  • Kicker logo stickers
  • Manual (English/ Spanish/ German/ French)
  • Template on box

Product Research

Features

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: 0.2 ft³
  • Maximum Enclosure Volume: 1.25 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: 0.8 ft³ with a 8" x 1.5" x 20.75" slot port
  • Maximum Enclosure Volume: 1.20 ft³ with a 8" x 2" x 19.125" slot port

Note: Although smaller than optimal, the prefabricated ported enclosures we list on the accessory page produce very good results.

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.

Kicker 40CWRT82 Reviews

Average Customer Review:

6 reviews
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Different Kind of Bass

Written By Craig, Arizona on Thursday, May 29, 2014

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

Be careful what enclosure you use. I wouldn't use anything smaller than 1.5 cubic foot sub box for more air flow (capacity). I tried it with a sealed .5 cubic foot and it sounded like someone was hitting the wood with a mallet. I was terrible and I'm positive that it was because the box was too small. I was never able to try it in another box, but it should sound a heck of a lot better in a larger one. To me, why make a shallow sub if you can't put it in a very shallow box? I guess their definition of 'shallow' is different than mine. Oh well.

Otherwise, it sounds clean and is very loud @ 1 ohm w/ 400w. I would still recommend it if you can find a good enclosure for it.

P.S. I also tested it @ 4ohms w/ 150w. No change in sound quality, just not as loud. And all this goes with it wired normal and reverse.

Pros: Looks good. Loud Clean Bass.

Cons: Research an enclosure before you buy. You may want to download the manual first to get the proper specs to find a good box.

Kicker 40CWRT82

Written By phillB, usa on Friday, May 02, 2014

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

A very shallow sub that can produce big sound. Is capable of handling a lot of power, and it sounds bigger than an 8"

Pros: Shallow and small box ready

Cons: Made more for low watt applications

awesome sub

Written By JoshM, Atlanta, GA on Friday, March 28, 2014

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

Installed in the factory enclosure in my 2006 F150. I'm pushing with a pioneer head unit and the factory amp. It could use a little more power but it sounds great now. I'll certainly recommend this sub.

Pros: easy install, great bass, looks good

Cons: none

Kicker 40CWRT82

Written By scott123, spring hill, florida on Saturday, February 15, 2014

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

very nice direct replacement for my Hyundai factory sub had to do a littlr heat gun to the plastic existing box but all in all perfect fit

Pros: all

Cons: non as far as i'm concerned

Comp rt8

Written By Oso187, Orlando on Monday, January 20, 2014

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

Awesome sub for a 8 inch it hits hard definitely worth buying

Pros: Small compact and hits hard

Cons: Non

Gets the job done

Written By Dan, Wyckoff, NJ on Thursday, October 31, 2013

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

Does what its supposed to do. Makes bass sounds. Pretty musical to boot!

Had to fit something in a 4 door pickup, which is of course notorious for having limited space. Built a box, and installed this thing. I connected it at 1 ohm, and it sounds fine. Its not going to win any SPL competitions, but it does add to the low end for sure.

Pros: Very small and shallow. Sounds nice, very musical. Its pretty fast on transients. Really nice build quality

Cons: None really....

Get everything you’ll need to enjoy your new Kicker 40CWRT82

We've verified that these enclosures are a good match for this subwoofer.
It's critical to have good wire, and none is included with the sub.
Reduce ambient road noise and your vehicle's "rattles," for better sound inside your car.
Add a grille and keep your sub safe.
These can be useful if you are building a custom box.
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Sound Ordnance BB82-140V

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Dynamat SuperLite Tri-Pak

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Bojo Trim Panel Tools

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Bojo Trim Panel Tools

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Polyester Fiber Stuffing

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Metra Speaker Terminal

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Rubber Feet

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Corner Protectors

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Springback Handle

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Autosound 2000 Disc One

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Questions & Answers Ask the community. Share your knowledge.

3 questions already asked

For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Krissy  Aug 11, 2014 ]  Staff
The spec for this sub is a minimum of 0.2 cubic feet sealed. I looked everywhere for about 2 weeks and this sub was the ONLY one that I could find that would meet my requirements. I just purchased one for my Honda Ridgeline and had to make a custom box out of MDF. I came in around 0.22 cubic feet after displacement and it sounds great. I made a trapezoidal box that measured 2-1/4" at the top and 4-1/4" at the bottom. Width was 19" and the height was 11-1/2". I used 1/2" MDF which Kicker says is allowable for 8" and smaller subs. [ james  Apr 23, 2014 ]
I don't believe so. The specs say .20 is the smallest and I used .6 so no way of telling. I don't think that would be enough air [ Phillip  Apr 22, 2014 ]
I read that the minimum volume for this sub is .2 cubic feet, but I was wondering what the consequences of installing it in a smaller box would be and if it would be worth buying one [ Nathan  Apr 21, 2014 ]