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Kicker CompRT TCWRT124 (40TCWRT124 )

1000W Peak (500W RMS) Compact 12" Loaded CompRT Shallow Subwoofer Truck Enclosure


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Kicker TCWRT124 (43TCWRT124)

OUR PRICE: $299.95

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Kicker CompRT TCWRT124 (40TCWRT124 )

1000W Peak (500W RMS) Compact 12" Loaded CompRT Shallow Subwoofer Truck Enclosure


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NVX Speaker Wire (XWS1225)

25 ft. of True 12 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)


NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)


Car Stereo and Speaker Installation Tool Kit

Complete Car Stereo Tool Kit, Includes Voltage Test Light, Wire Stripper and More



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Kicker Audio Store

Kicker Audio: Quality, Performance, and Passion
(Sonic at Stillwater Designs HQ)

Kicker Authorized Dealer

Subwoofer Features:

  • 12" CompRT Series Subwoofer
  • Power Handling:
    • Peak: 800 watts
    • RMS: 500 watts
  • Recommended power range: 100 - 500 watts RMS @ 4ohms
  • Enclosure final impedance: 4 ohms
  • Injection-molded polypropylene cone
  • Tough Santoprene surround with interlocking front gasket
  • Dual pair of spring-loaded wire terminals custom designed for shallow mount installations
  • Weather-proof for outdoor powersports applications
  • Double venting for max cooling
  • Inverted-bumped back plate and bumped top plate for full voice-coil clearance and excursion while maintaining a shallow profile
  • High-temp voice coil for increased power handling
  • Resonance Frequency (Fs): 32.7 Hz
  • Top-mount depth: 3-3/4"
  • Sensitivity: 98 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Enclosure Specifications:

  • Single 12" Sealed Truck Enclosure
  • Smallest sub-loaded enclosures from KICKER
  • Easy-to-use impedance designated at the terminal cup assembly
  • Tough KICKER wood enclosure
  • Dense gray carpeting
  • Monogrammed, carbon-fiber front baffle
  • Dimensions: 3-9/16"TD x 6-3/4"BD x 13-1/4"H x 21-1/2"W

Product History:

Kicker 43TCWRT124 thumbnail
(newest, current model)
Kicker 40TCWRT124 thumbnail
(previous model, replaced by Kicker TCWRT124 (43TCWRT124))

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Comp-RT / CRT (Kicker)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
2 ohms
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
500 watts
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
800 watts
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Injection Molded Polypropylene (IMPP)
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Santoprene Rubber
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
98 dB

Enclosure Specifications

Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Number of Subs/Speakers
This value represents the number of speakers or subwoofers that the enclosure accommodates.
Box Style/Shape
The box style or shape refers to the actual shape of the box. Square and rectangular boxes are straight-edged boxes on all sides, whereas hatchback and truck style enclosures feature an angled front or back design that allows for installation in places short on depth such as single cab pickup trucks. You can also use such enclosures in hatchback cars or other vehicles where space is a premium. Tube and cylinder shaped boxes were made popular by Bazooka and are a great option for those looking for a nice amount of bass without sacrificing lots of space. They may even fit in locations that slim truck boxes cannot fit in. If the enclosure is vehicle specific, we encourage you to read the product description to find out which vehicles the enclosure is made for.
Truck Style, Slim with Angled Front
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
Second Depth
The second depth is used only when the box is slanted or angled. This value is the top measurement and it is measured in inches.
Wood Thickness
The thickness of the wood the enclosure is made of, measured in inches.
Number of Terminals
The number of terminals the enclosure has. Each terminal represents 1 positive and 1 negative.
Terminal Type
Spring clip terminals work best with bare wire connections with small-gauge speaker wire, or pin-type connectors.

Binding post terminals are a sturdier, more versatile type of speaker terminal. Because binding post terminals are are threaded, you can tighten them down against the wire or connector for a tight, clean connection. The most popular style of binding post terminals is known as a "5-way binding post". This type can accept bare wire, or any of the common speaker wire connectors. Binding posts with the option to be used with banana clips are even more versatile

Spring posts are a hybrid of the two. Instead of using a thread and "screwing" them tight, they use a spring to allow the wire to fit and tighten against the terminal.

Spring posts
Box Exterior Color
The color of the enclosure's exterior/outer finish.
Box Finish
The material used on the outside of the box. Most boxes are carpeted to prevent exterior scratches; however vinyl is popular as it can often be color-matched to a near exact look of your leather factory interior.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Huron, SD

Great sub!

February 24, 2014

I bought this sub to put under the back seat of a 2011 Silverado Crew Cab and it fits PERFECTLY! Granted it's a shallower than normal shallow mount, so you won't get the real deep pounding bass from it, but it sounds great regardless. Very simple hook-up, had the amp installed before the sub came, so I just had to hook up the sub and it was off and running. The box looks frickin sweet, too. I would recommend this to anyone that is looking for a little extra bass in a confined area, such as under a seat or in a small trunk.

32 of 38 found this helpful

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Tucson, AZ

Hit's Hard!

February 22, 2014

I have it behind the seat of an 84 Toyota standard cab pick up (a tad big for that, but, I make due) and it is pushed by a Kicker CX600.1 which is pushing 647 watts RMS because I have the sub wired at 2 ohms. This thing hits hard! I am amazed at how well it performs. I get no distortion at high volumes and the bass is loud and clean!

I would definitely recommend this.

30 of 37 found this helpful

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Mike C

Orlando, FL

Shallow mount has trade-offs

September 22, 2013

This sub is perfect for amps up to about 400 watts RMS. I know it is rated for 800W RMS, but it cannot handle the load. Thinking it was a defective sub I replaced it with the same model only to realize this model can't handle that amount of power. I've owned several Kicker subs throughout the years and have enjoyed their original Comps and Solo-Barics which have taken a beating and kept on performing. Sadly these models are not the same. I am aware they are shallow mount and will not hit as hard as their other 12" models, but the trade-off to save space is not worth it unless you are looking for low to decent levels of bass.

27 of 32 found this helpful

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December 1, 2014

I definitely recommend this sub. The box construction is great and the sub has been able to take everything I can throw at it without distortion. I'm definitely impressed with how low it gets considering it's in a sealed box. The lowest I can actually hear or feel it go is around 60 db with the amp and stereo tuned correctly. I just bought a Pioneer 12'' Champion Pro sub and a ported box to accompany it so that I can get some lower notes and deeper bass drops, but other than that it has exceeded all expectations and the sound quality is phenomenal.

25 of 30 found this helpful

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El Cajon California

awesome deal

September 14, 2014

I like so much, I enjoy the speaker so good its what I want you have the right items for us and the prices are great tnx to be on business and take care of our expectations

26 of 32 found this helpful

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warminster pa

nice product

November 26, 2014

If your looking for a nice sub for your truck look no further. Awesome box construction plus smooth sound are what this box and subwoofer offer.

23 of 29 found this helpful

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Nice sound for a small size

March 23, 2015

I bought this to save a little space in the trunk. the sound is much better then I expected from one 12 inch shallow mount in a sealed box. it was meant to replace 2 12 inch polk DB subs in a ported box, although the sound isn't nearly as much it also is destroying my VW in the process it adds a richness to the sound and can be turned up to still a loud level but it will bottom out with large bass drops. for the purpose of saving space and enhancing an otherwise stock system this is a top notch choice. I highly recommend especially if your short on space and need good deep sound. I wish it did have a guard/cover to protect the sub.

18 of 22 found this helpful

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Franklin Square, NY

Excellent Product

November 12, 2014

Bought this for my Jeep Wrangler 2 Door and I love it!!! Fits in the very limited space I have while providing plenty of bass! Plenty of bang for the buck!!

21 of 28 found this helpful

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Accessory Tools and Products

Accessories added

NVX Speaker Wire (XWS1225)

25 ft. of True 12 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)

Your Price $39.99

NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

Your Price $53.99

NVX Sound Dampening Rubber Roller (SDRLR1)

Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Your Price $7.99

Car Stereo and Speaker Installation Tool Kit

Complete Car Stereo Tool Kit, Includes Voltage Test Light, Wire Stripper and More

Your Price $18.99

Browse 2 questions and 2 answers
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Why did you choose this?
Sonic Electronix Store
perfect size for behind a truck seat. Great value for the quality that is being delivered.
keith p on Dec 29, 2014
What is the best rms wattage for this box?
A shopper on Nov 5, 2014
Best Answer: Hello,

It appears that no users have chimed in, so we will; The Kicker 40TCWRT124 specifically asks for 800w RMS @ 4ohms. Unlike most Kicker subs, we suggests NOT overpowering this one, so stick to ~600-800w RMS @ 4ohms, from an amp like the Hifonics BRX2000.1D.
Hifonics BRX2000.1D
Hifonics BRX2000.1D
Reply · Report · Customer SStaff on Nov 18, 2014
· Add Answer · I Have This Question Too (0)

Product Summary


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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Kicker CompRT TCWRT124 (40TCWRT124 )