Watch a first-look video

Kicker 40CWR104

CompR Series 10" subwoofer with dual 4-ohm voice coils

Item #: 2064CWR104

In Stock

6 Reviews



Your price: $79.99 Earn up to 80 Rewards points

Add to Cart

+ Add to wishlist + Email me alerts for this product

Scratch & Dent: $67.99

View all associated offers

Brace yourself 

Kicker designed their CompR line of subs for people who love to hear strong bass when their music's playing. Built from the ground up with performance in mind, these subs handle plenty of power to give you the baddest bass available from the legendary Comp line.  

Kicker 40CWR104

Change this subwoofer's impedance with a flick of the built-in switch.

Overbuilt? More like built just right

Kicker's 40CWR104 10” subwoofer comes equipped with a tough, polypropylene cone that stays rigid during intense play sessions so you hear accurate bass. A custom-designed back and top plate give the woofer plenty of room to travel, while the durable rubber surround helps to control cone movement during a heavy workout. This sub uses extensive venting in its heavy steel basket to shrug off heat, so you can count on reliable performance.   

Say hello to system flexibility

This Kicker CompR will handle up to 300 watts RMS so make sure you have an amplifier that'll do it justice. Its dual 4-ohm voice coils make it easy to connect to a mono amplifier, and this versatile sub works well in sealed or ported enclosures.

To drive this single subwoofer, we recommend a mono amplifier rated between 225 and 600 watts RMS at 2 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

Product Highlights:

  • 10" subwoofer with dual 4-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: 83.6 dB
  • top-mount depth: 5-3/16"
  • sealed box volume: .80 - 3.0 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.

Kicker 40CWR104 Reviews

Average Customer Review:

6 reviews
Review this product
Great Gear Giveaway

Submit a review and then enter to win a $350 rewards card


Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
Rate the following specific attributes
 Sound Quality
 Ease of Use
 "Coolness Factor"
 Build Quality
1500 characters left
  Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left

Great hit for the $$

Written By Johhny5, Ohio on Sunday, November 08, 2015

Crutchfield Customer Review (What's this?)

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

This is a great product for the amount of money you spend on it. I have three kids this was in addition to the factory system that doesn't blow the doors off. It sounds great I would buy it again and again and recommend it to anyone else, highly. The only thing is is the switc this was in addition to the factory system that doesn't blow the doors off. It sounds great I would buy it again and again and recommend it to anyone else, highly. The only downfall is depending on the model you buy you only have two options for impedance. This one is sold as a 4 ohm speaker but you really only have the option between 2 ohm or 8 ohm

Pros: Great sounding Durable Worth every penny

Cons: The impedance switch which doesn't allow for creative wiring

Kicker subs

Written By Peepers6, Colorado on Monday, February 23, 2015

Crutchfield Customer Review (What's this?)

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

These subs are super simple to wire with the new switch that is built in to them. Way to go Kicker. Great subs!!!

Pros: Solid, heavy, well built, & super easy to wire.

Cons: None so far.

Great sub

Written By Jon M., Michigan on Monday, October 06, 2014

Crutchfield Customer Review (What's this?)

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

I bought one of these for my 2013 Ram system build. It's running in a ported box (1.0 cubic foot of airspace), with a Kenwood XR-900-5 amp pushing it and it sounds incredible. It's gets loud, hits low, and keeps it's composer. Would recommend to anyone looking for a compact package with some umph behing it!

Pros: Small, loud, gets low, and decently priced.

Cons: None yet

good sound at a good price.

Written By Anonymous, Kiel, Wisconsin on Tuesday, June 10, 2014

Crutchfield Customer Review (What's this?)

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

Good sound considering I have to run the smallest box possible as it is in a convertible. The switch is a convenient feature but not needed. I have not had these long so I can not comment on the durability and I think they were rather generous with the power rating. Putting 600w into 2 @ 8ohm so a 4 ohm load. Gain is almost all the way down and I can still overpower them. I will come back to review later for durability.

Pros: Good sound and a good price. Fits into the smallest of boxes w o being a shallow mount.

Cons: Prob over rated power. Stay around 200-250 and they should last forever.

Kicker 40CWR104

Written By Anonymous, Brunswick, GA on Tuesday, October 22, 2013

Crutchfield Customer Review (What's this?)

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

Really like the speaker would like a more powerful one next time

Kicker Comp 4ohm Subwoofer - Love the easy hook up!

Written By PaulD, San Antonio, TX on Wednesday, August 28, 2013

Crutchfield Customer Review (What's this?)

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

After lots of video watching on You Tube and Tips and Explanations on the Crutchfield website I was really concerned with Parallel vs. In Series wiring to get proper wattage for Amp/Subwoofer. Kicker solved all those worries with an easy 2ohm/8ohm switch. Wow! Excellent innovation. The sub is installed in a sealed OBCON box (21"X9"X15") and sounds incredible with the Kicker 500w Mono Amp. Nice, Clear and lots of Oooomph! THANKS KICKER!


Cons: NONE

Hands-on research

What's in the box?

Download owner's manual

  • One 10" Dual 4-ohm voice coil subwoofer (with impedance switch)
  • Kicker logo stickers
  • Manual (English/ Spanish/ German/ French)
  • Template on box

Product Research


Dual 2-ohm Voice Coils: This woofer features dual 4-ohm voice coils, offering wiring flexibility. A switch on the speaker terminal allows you to easily change from parallel (the woofer presents a 2-ohm load) to series (the woofer presents an 8-ohm load) wiring for the voice coils.

UniPlate Construction: The woofer features a one-piece UniPlate construction with a vented, extended pole piece and backplate. This unique design provides the following benefits:

  • Optimizes heat transfer efficiency for cooler operation
  • Eliminates erratic magnetic flux in the voice coil gap
  • Releases pressure under the suspension for uniform cone movement
  • Prevents the voice coil from bottoming out, and the resulting damage

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

Enclosure Compatibility

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: 0.8 ft³
  • Maximum Enclosure Volume: 3.0 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.