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JL Audio  ACS112LG-TW1

PowerWedge+ 12" 600W Peak Power Handling Single Sealed Subwoofer Enclosure with 400W Class-D Built-In Amplifier

Item #45994

Condition:   Brand New

Product Highlights

  • PowerWedge+ 12" Subwoofer
  • 600W Peak Power Handling
  • Single Sealed Enclosure
  • 400W Class-D Amplifier

  Free 2-Years Warranty Included!
60 DAYS Returns Accepted.
FREE Lifetime Tech Support.
FREE Shipping.
60 DAYS Price change protection.

$929.99

Reg. Price $999.99  Save $70.00
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  Free 2-Years Warranty Included!
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JL Audio ACS112LG-TW1 PowerWedge+™ 12" 400W RMS Single Sealed Subwoofer Enclosure with Built-In Amplifier


We are a JL Audio authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!

What's Inside?
  • • 12" PowerWedge Single Sealed Subwoofer Enclosure with Built-In Amplifier
  • • Black metal grille (installed)
  • • Power connection plug (installed)
  • • 30-amp ATO fuse (installed)
  • • 12" Speaker level input harness
  • • Specification card
  • • Warranty information
  • Owner's Manual

 


Why Choose JL Audio ACS112LG-TW1 Powered Subwoofer?


 

 

JL Audio ACS112LG-TW1 Powered Subwoofer Left Angle View
Premium Sub-bass Performance

The JL Audio ACS112LG-TW1 is a premium compact powered subwoofer enclosure that delivers powerful bass performance with exceptional convenience for car audio enthusiasts. This all-in-one solution features a 12-inch TW1 subwoofer pre-installed in a compact, sealed enclosure and a built-in 400-watt Class D amplifier.

The ACS112LG-TW1's TW1 subwoofer is renowned for its shallow mounting depth and superb bass output, making it ideal for vehicles with limited space while maintaining impressive low-frequency performance.

 

 

Black Steel Mesh Grille

With the built-in Class D amplifier, this powered enclosure maximizes the subwoofer's potential, delivering deep and accurate bass without the need for an external amplifier. The enclosure is expertly crafted using high-quality materials to minimize resonance and ensure durability.

The compact design of the ACS112LG-TW1 allows for easy installation under seats or in tight spaces, making it a perfect choice for those seeking enhanced bass performance without sacrificing valuable cabin space.

JL Audio ACS112LG-TW1 Powered Subwoofer Close up View

 

 

JL Audio ACS112LG-TW1 Powered Subwoofer Right Angle View
Carefully Engineered

This incredibly compact, space-saving sealed enclosure stands at a slim 6.625 inches deep, yet it crams a premium 12-inch 12TW1 low-impedance subwoofer and a massive 400-watt RMS Class-D amplifier into one ultra-sleek package. Driven by JL Audio's patented DCD™ (Direct Power Conversion) amplifier technology, it hits a mind-blowing 90%+ efficiency rate to deliver ultra-clean, punchy low-frequency performance at 0.25 ohms with practically zero heat generation.

Built to last with integrated thermal protection and a rugged steel mesh grille, this all-in-one masterpiece is the smartest, most effortless way to bring legendary studio-quality thump straight to your daily drive.

 


Frequently Asked Questions (FAQ)


  • • Why does my JL Audio ACS112LG-TW1 power on but produce almost no bass?
    Check the crossover, gain, and input settings. Incorrect tuning or reversed subwoofer polarity is the most common cause.
  • • Can I connect the ACS112LG-TW1 directly to my factory head unit?
    Yes. The built-in amplifier accepts high-level speaker inputs, making it compatible with most factory audio systems.
  • • Why does the amplifier shut off after playing loud bass for a few minutes?
    This is usually caused by overheating, insufficient airflow, or low vehicle voltage during heavy bass output.
  • • Can I install the ACS112LG-TW1 behind the rear seats of my pickup truck?
    Yes, as long as there is adequate clearance for the enclosure and proper ventilation for the amplifier.
  • • Why do I hear a thump every time the powered subwoofer turns on?
    This is commonly caused by the remote turn-on sequence or improper grounding. Verify all power and signal connections.
  • • Does the ACS112LG-TW1 support a wired remote bass control?
    Yes. It is compatible with JL Audio's optional remote bass level controller for convenient adjustments.
  • • Why does the bass sound stronger with the trunk open than when it's closed?
    Vehicle acoustics affect low-frequency output. Repositioning the enclosure or adjusting the phase may improve in-cabin bass.
  • • Can I add another passive subwoofer to the ACS112LG-TW1?
    No. The built-in amplifier is engineered specifically for the included TW1 subwoofer and should not power additional speakers.
  • • Why doesn't the Auto Turn-On feature activate with my aftermarket radio?
    Some radios do not provide enough signal for automatic detection. Using the remote turn-on wire is the most reliable solution.
  • • Will adding sound deadening around the trunk improve bass quality?
    Yes. Sound deadening reduces panel vibrations and helps produce tighter, cleaner low-frequency response.

SPECIFICATIONS


  • Diameter : 12 Inch
  • Impedance : 0.25 Ohm

FEATURES


Features:

  • Compact 12" Powered Subwoofer: A space-saving sealed enclosure loaded with a JL Audio 12TW1 subwoofer delivers deep, accurate bass without taking over your cargo area.
  • 400W RMS Class-D Amplifier: Built-in high-efficiency amplifier produces strong, clean bass at 0.25 ohms with minimal heat generation.
  • Low-Impedance TW1 Subwoofer: Features a 12TW1-0.25 mica-filled polypropylene cone woofer for tight, controlled low-frequency performance.
  • Sealed Enclosure Design: Precision-built MDF sealed cabinet delivers punchy, accurate bass with excellent transient response.
  • JL Audio DCD Amplifier Technology: Direct Power Conversion design achieves over 90% efficiency for powerful output and long-term reliability.
  • Flexible Input Options: Accepts RCA line-level or speaker-level signals for easy connection to factory or aftermarket stereos.
  • Quick-Disconnect Power Plug: Removable terminal block allows fast subwoofer removal when extra storage space is needed.
  • Adjustable Sound Controls: Variable low-pass crossover (50–200 Hz), input sensitivity control, and phase switch for perfect system tuning.
  • Optional Remote Bass Control Ready: Compatible with JL Audio RBC-1 remote knob for convenient bass adjustment from the driver’s seat.
  • Built-In Protection Circuitry: Thermal protection safeguards the amplifier from overheating for worry-free operation.
  • Premium Construction: CNC-cut MDF enclosure wrapped in automotive carpet with a steel mesh grille for durability and a factory-clean look.

 

Specifications:

  • Subwoofer Size: 12"
  • Enclosure Type: Sealed
  • Woofer Impedance: 0.25 ohms
  • Amplifier Type: Built-in Class D
  • Power Output: 400 Watts RMS
  • Low-Pass Filter: 50–200 Hz, 12 dB/octave slope
  • Woofer Material: Mica-filled Polypropylene
  • Enclosure Material: MDF with automotive carpet finish
  • Grille: Black steel mesh
  • Inputs: RCA line-level and speaker-level
  • Fuse Rating: 30A
  • Wiring Requirement: 8-gauge amp wiring kit (sold separately)
  • Dimensions: 21" W × 13.5" H × 6.625" D
  • Condition: Brand New
  • UPC: 699440933353
  • Weight: 25
  • Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for repair within 1 year from the original date of purchase with proper return authorization.

Do you own this product?

Write a review!
  • I would highly recommend this amp if you want a simple and clean setup that doesn't take up too much space. I have had mine for 5 Plus years and the Driver has recently gone out on me but i can not complain. The one problem you encounter when the driver gives out on you is replacement, it is very hard to find a replacement driver instead of buying a completely new box.

    colby wallace
    4/11/2021

  • Yeah, it's a bit spendy, but it's JL Audio, so you know it's top-notch. This sub has that deep sound and hits hard, fits just right in my Camry.

    Reid
    6/3/2024

  • perfect sub for what I've been looking for. doesn't take up too much space and has a stylish look. powerful enough that you can feel the bass but not overbearing to listen to. kind of pricey but as long as its from JL Audio it is always worth the upgrade.

    Buddy
    3/24/2025
free installation

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