JL Audio CS112LG-TW3

Sealed PowerWedge™ enclosure with one 12" TW3 subwoofer

Item #: 136112LGW3

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4 Reviews

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JL Audio quality in a thin package

The PowerWedge CS112LG-TW3 enclosure pumps out signature JL Audio bass from a small sealed box. Install it anywhere that you might have a little room, like behind a seat or in the trunk, add an amp, and enjoy the extra depth that good bass will add to your system.    

Immense bass

JL Audio used their extensive engineering know-how to build a super-thin TW3 subwoofer that offers big performance. This PowerWedge handles up to 400 watts RMS, housing one 12" TW3 subwoofer that pounds out impressive low end. The enclosure is matched to the sub for optimum output, and the airtight sealed design delivers powerful, accurate bass.  

JL Audio PowerWedgeCS112LG-TW3 Single 12" 2 Ohm Sealed Hatchback Sub

This enclosure's slender profile means it'll fit behind seats or in other tight spaces.

Solid MDF enclosure

JL Audio uses state-of-the-art automated woodworking equipment to fabricate the high-quality MDF enclosure, then finishes it with rugged automotive carpeting, nickel-plated push terminals, and solid internal wiring. The enclosure is inspected by hand at the manufacturing facility in Florida to ensure that you get the bass that you expect from JL Audio.

Product Highlights:

  • sealed enclosure with one 12" TW3 subwoofer
  • 5/8" medium density fiberboard construction covered with black carpet
  • steel-mesh grille
  • 2-ohm total impedance
  • power handling: 100-400 watts RMS
  • frequency response: 22-200 Hz
  • sensitivity: 82 dB
  • 23-3/5"W x 15-1/4"H x 4-4/5"D (without grille)
  • warranty: 2 years
  • Our 60-day money-back guarantee

Enclosed Subwoofers 101

An enclosed subwoofer is a box with a subwoofer already installed. The advantage to buying an enclosed sub is that the manufacturer made the sub, then designed and built the box as a perfect match, so you'll get the best possible performance. Every enclosed sub has a maximum RMS power handling rating, so pair it with an amp with a similar RMS power rating to get the best performance.

JL Audio CS112LG-TW3 Reviews

Average Customer Review:

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Great Sub

Written By Matt, Jacksonville North Carolina on Thursday, January 22, 2015

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

Great small sub this thing hits soooo hard and has great quality it vibrates your ribcage! I recommend this sub to anyone that loves a loud bass

Pros: Loud clean quality not too expensive

Cons: Doesn't have built in amp but that's not too bad

How crap what a sub!

Written By Jason, Houston, TX on Tuesday, January 13, 2015

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
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  • Ease of Use
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This is the best small sub I've had. I replaced two Alpine type R and it is almost on the same level.

Pros: Sound quality Size It is perfect

Cons: None

Amazing sub and so little space

Written By Mike, Fort mill sc on Wednesday, August 20, 2014

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
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Speaker is so bassy and clear sounding. Low bass and thumps so hard. Small area that it takes up. Would love to have two.

Pros: Size, quality, sound, craftsmanship. Etc. .

Cons: No cons from me

What is there to say

Written By JohnH., Boston, MA on Wednesday, April 09, 2014

Crutchfield Customer Review (What's this?)

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    "Coolness Factor"
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    Build Quality
  • rating
    Ease of Use
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What is there to say? This thing bangs. I have it running a mere 300RMS through a small Kenwood 5001 and I have no complaints. Other than I'm sure my rear view mirror will fall off in the near future. It fits well in most places, DOUBLE CHECK YOUR DIMENSIONS! I don't know why I thought this would fit anywhere else in my car, but thats my own fault for not measuring.

The response is SUPER clean, pretty much everything about this sub is wonderful.

2009 Mini Cooper Clubman Kenwood 5001 JL Audio TW3 12" Pioneer Speakers all around.

Pros: BOOM, BOOM. BOOM, clean, perfectly sized box, compact, It's JL Audio

Cons: Speaker grille is hard to get off? ONLY complaint. I need it off for my set up and I'm worried about breaking it trying to get it off. Other than that, nothing!

Hands-on research

What's in the box?

Download owner's manual

  • CS112LG-TW3 Sealed subwoofer enclosure (loaded with one 12TW3-D4 woofer)
  • Black metal grille (installed)

Features and Specs

Woofer Size (inches) 12
Woofer Material Mica-filled Poly
Enclosure Type Sealed
Color Black
Pieces in System 1
Width (inches) 23-3/4
Height (inches) 15-3/8
Depth (inches) 6-5/8
Second Depth (inches) 5-1/8
Connector Type 5-way post
Frequency Response 22-200 Hz
Power Range (Watts RMS) 125-400
Maximum Wattage 800
Sensitivity 82 dB
Impedance 2 ohms
Parts Warranty 2 Years
Labor Warranty 2 Years

Product Research


Overview: The CS112LG-TW3 PowerWedge subwoofer system is a compact bass solution for vehicles with limited space. This sealed enclosure is loaded with one 12TW3-D4 subwoofer. The sub's dual 4Ω voice coils are internally wired in parallel to present a 2Ω final impedance.

Enclosure Design: The enclosure features top-quality MDF (medium-density fiberboard), constructed using state-of-the-art CNC woodworking equipment, and covered with high-grade automotive carpeting. The driver is protected by a black steel-mesh grille. One pair of 5-way binding posts is on the left side of the enclosure.


  • Width: 23-3/4"
  • Height: 15-3/8"
  • Depth:
    • 5-1/8" (enclosure)
    • 6-5/8" (including grille)

Our Product Research Team

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