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JL Audio 12TW3-D4 (Open Box, Good)

400W RMS 12" TW3 Series Dual 4-ohm Shallow Subwoofer

JL Audio
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• RMS Power: 400 watts
• Impedance: Dual 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Rubber Surround
• Mount depth: 3.5"
• Sensitivity: 84.11 dB

Learn more about the ls-12tw3d4-u7

We apologize

This item has been discontinued

Product Highlights


• RMS Power: 400 watts
• Impedance: Dual 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Rubber Surround
• Mount depth: 3.5"
• Sensitivity: 84.11 dB

Description


JL Audio brand icon

Authorized dealer

Item Condition - Open Box, Good:

This product is used, but it will work like new and is in overall good condition. It will show signs of wear that can include scuffing, scratches, fingerprints, dents, and worn corners or installation marks. May be missing non-essential parts, accessories or original packaging.


JL Audio 12TW3-D4

Building on the core technologies developed for the TW5 thin-line subwoofers, the TW3 series embodies a powerful combination of shallow mounting depth and long linear excursion capability. The result is a speaker that delivers big, impressive sub-bass performance in a compact form that works for those snug-fit installations. Thanks to the TW3 thin-line architecture, the deep, powerful and articulate JL Audio bass is now accessible in more applications than ever. The 10-inch subwoofers require only 3.25 inches of mounting depth, while the 12-inch models take just 3.50 inches.

An aluminum-alloy dust cap aids with heat dissipation, extending the speaker’s power handling range. A JL Audio logo adds a finishing accent to the dust cap’s rich satin black finish. Known for its durability, the TW3 series’ injection-molded, mica-filled polypropylene cone design offers impressive frequency response and deep, powerful bass reproduction with minimal distortion. Proprietary motor, suspension and cone modeling systems are used to achieve long, linear excursion capabilities with low distortion and powerful sound output. The result is tight, clean, articulate bass performance at all power levels.


Product Details:

  • 12" Dual 4 ohm TW3 Shallow Mount Series Subwoofer
  • Power Handling:
    • RMS: 400 watts
  • Mica Injected Polypropylene - MIPP Cone
  • Rubber Surround
  • Precision-built in USA
  • Very shallow mounting depth (3.25 / 3.50 Inches)
  • Aluminum-alloy dust cap and rear cap
  • Cast alloy frame
  • Patented “floating cone attach method” technology
  • “Concentric tube” architecture
  • Dynamic Motor Analysis system
  • Carefully engineered lead-wire design
  • 15.2 mm Xmax
  • Resonance Frequency (Fs): 26.46 Hz
  • Sensitivity: 84.11 dB
  • Recommended sealed box volume: 0.80 cubic feet
  • Recommended ported box volume: 0.95 cubic feet
  • Top-mount depth: 3.5"
  • Cutout diameter: 11.625"
  • Authorized Internet Dealer
  • Optional protective subwoofer grille (Sold Separately)
  • 1-year Manufacturer's Warranty

  • Priced Individually

Frequently Asked Questions (FAQ)


This is a Dual 4-Ohm (D4) subwoofer. To achieve a 2-ohm load, connect both positive terminals together to the amp’s (+) and both negative terminals together to the amp’s (-). This "parallel" wiring maximizes most mono amp outputs.
The 12TW3 uses a Tab-Ear mounting system rather than a full circular rim. If your enclosure's cutout is a perfect 11.0625" circle, the "ears" should sit flat. If they aren't, you likely need to slightly notch the wood where the ears rest.
No. Unlike most subs, the TW3 has no pole vent on the back of the motor. You can mount it with as little as 1/4" of clearance from the back wall of your enclosure without risking overheating or mechanical damage.
This is often mechanical bottoming. Because this sub has a massive 15.2mm excursion, ensure the cone isn't hitting the floor, seat, or a grille. You need at least 1.5 to 2 inches of "stroke" clearance in front of the woofer.
Because of the Concentric Tube suspension, the terminals are tucked in. Pre-wire the leads to the sub terminals before dropping it into the cutout. Use 12-gauge wire to ensure the spring terminals hold a tight, rattle-free grip.
Yes, but it is optimized for tiny sealed boxes (0.80 cu. ft.). If you go ported (0.95 cu. ft.), you must use a subsonic filter on your amp set to approx. 25-30Hz to prevent the shallow suspension from over-extending and failing.
The TW3 moves significantly more air than standard shallow subs. Check for air leaks around the mounting ears. Use a gasket or high-quality foam tape to create a perfect seal; even a tiny leak will ruin the low-end response.
Use #8 or #10 pan-head wood screws. Do not use countersunk (tapered) screws, as the wedge shape can put outward pressure on the plastic mounting "ears" and cause them to crack over time under high vibration.

Subwoofer Wiring Guide


Wiring Guide to Wire 1 JL Audio 12TW3-D4 (Open Box, Good) Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 JL Audio 12TW3-D4 (Open Box, Good) Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 JL Audio 12TW3-D4 (Open Box, Good) Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 JL Audio 12TW3-D4 (Open Box, Good) Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
TW3 Shallow Mount Series
Subwoofer Size
12"
RMS Power Handling
400 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
Sensitivity
84.11 dB
Xmax (millimeters)
15.2 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Mica Injected Polypropylene - MIPP
Woofer Surround
Rubber
Magnet Structure
Single Stacked
Subwoofer Grille
Optional (Accessory required and sold separately)
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Optimum Sealed Box Volume
0.80 cubic feet
Optimum Ported Box Volume
0.95 cubic feet
Top-Mount Depth (Mounting Depth)
3.5"
Cutout Diameter
11.625"
Shallow Mount Installation
Yes
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
26.46 Hz
Equivalent Compliance (Vas)
48.73 liters
Total Speaker Q Value (Qts)
0.531
Electrical Q Value (Qes)
0.558
Electrical Resistance of Voice Coil (Re)
9.280 ohm
Mechanical Q Value (Qms)
10.766
What is in the box?
Paperwork
User manual
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

LS-12tw3d4-u7

Weight:

16.90lbs

Internal SKU:

ls-12tw3d4-u7

Internal Product ID:

231057

Product and How-to Videos


  • JL Audio TW3 Shallow Car Subwoofers | Product Overview
  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?

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