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JL Audio 12TW3-D4 TW3 Series Thin-Line 12" 400W RMS Subwoofer - Dual 4 Ohm

JL Audio

JL Audio 12TW3-D4 TW3 Series Thin-Line 12" 400W RMS Subwoofer - Dual 4 Ohm

Name: Singh Electronics
Address: 7003 Steeles Avenue West, Toronto, ON, M9W 0A2, CA
Telephone: +1 (416) 745-1021
Price range: $

$749.00

$949.99

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SKU: 12TW3-D4

UPC: 699440921855

Condition: New

Availability: Special Order - Usually Ships in 3-5 Days

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Descriptions

About: JL Audio 12TW3-D4 TW3 Series Thin-Line 12" 400W RMS Subwoofer - Dual 4 Ohm

Building on the core technology of our TW5 thin-line subwoofers, the TW3’s deliver a powerful combination of shallow mounting depth and excursion capability. In fact, they are capable of greater excursion than the W3v3’s.

To allow this remarkable feat to be achieved, JL Audio’s patented thin-line woofer technology compresses the architecture of the TW3’s using a “concentric tube” structure built into the injection-molded cone body. This structure supports the voice coil and a full annular spider, while permitting the placement of the large motor structure further forward in the speaker than with conventional designs.

TW3’s are optimized for small enclosures and offer our tab-ear mounting design to maximize cone area within their mounting footprints. We know you’re going to love working with these amazing Subwoofers.

Features:

Very shallow mounting depth (3.25 / 3.50 Inches)
No pole vent: permits mounting close to rear wall of enclosure.
Very small sealed enclosure volume requirements
Very long linear excursion capability (0.60 In / 15.2 mm, one-way)
DMA-optimized motor designs
“concentric tube” architecture
Patented “floating cone attach method” technology
Cast alloy frame
Injection molded, mica-filled polypropylene cone
Rubber surround
Aluminum-alloy dust cap and rear cap with JL Audio logo
Precision-built in USA at JL Audio’s Miramar, Florida factory with global components

Specifications:

Continuous Power Handling (RMS): 400 W
Recommended Amplifier Power (RMS): 200 - 400 W
Nominal Impedance (Znom): Dual 4 Ω
Nominal Diameter: 12 in / 300 mm
Overall Diameter

A1: 13.2 in / 335 mm
A2: 12.5 in / 318 mm

Mounting Hole Diameter: 11.625 in / 295 mm
Bolt Hole Circle Diameter: 12.5 in / 318 mm
Motor Outer Diameter: 6.125 in / 156 mm
Mounting Depth: 3.5 in / 89 mm
Driver Displacement: 0.029 cu ft / 0.82 L
Net Weight: 14.9 lbs / 6.8 kg

Parameters:

Free Air Resonance (Fs): 26.46 Hz
Electrical “Q” (Qes): 0.558
Mechanical “Q” (Qms): 10.766
Total Speaker “Q” (Qts): 0.531
Equivalent Compliance (Vas): 1.72 cu ft / 48.73 L
One-Way Linear Excursion (Xmax)*: 0.6 in / 15.2 mm
Reference Efficiency (no)
Efficiency (1 W / 1 m)**: 84.11 dB SPL
Effective Piston Area (Sd): 83.517 sq in / 0.0539 sq m
DC Resistance (Re)***: 9.280 Ω
* Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied.
** For parallel-wired voice coils, divide "Re" by 4. All other specifications remain the same.
*** Re (DC resistance) is measured with the voice coils in series, for parallel-wired specification divide Re by 4. All other specifications remain the same

Sealed Enclosure Specifications:

Wall Thickness: 0.75 in / 19 mm
Front Baffle Thickness: 0.75 in / 19 mm
Volume (net int.): 0.80 cu ft / 22.7 L
External Width (W): 21.25 in / 540 mm
External Height (H): 16 in / 406 mm
External Depth (D): 6.5 in / 165 mm
F3: 37.99 Hz
Fc: 46.97 Hz
Qtc: 0.9426

Ported Enclosure Specifications:

Wall Thickness: 0.75 in / 19 mm
Front Baffle Thickness: 0.75 in / 19 mm
Volume (net int.): 0.95 cu ft / 26.9 L
External Width (W): 30 in / 762 mm
External Height (H): 16.625 in / 422 mm
External Depth (D): 6.50 in / 165 mm
Internal Slot Port Width (SW): 5 in / 127 mm
Internal Slot Port Height (SH): 2.50 in / 64 mm
Internal Slot Port Length (SL): 31.25 in / 794 mm
Port Extension Length (PL): 26 in / 660 mm
Tuning Frequency (Fb): 32.14 Hz
F3: 32.52 Hz

Enclosure Notes:

The enclosure recommendations listed above are external dimensions which assume the use of 0.75 in (19 mm) thick material. If you are using 0.625 in (16 mm) thick material, subtract 0.25 in (6) from each dimension. Do not use any material with a thickness of less than 0.625 in (16 mm) as this may compromise the rigidity of the enclosure
All enclosure volumes listed above are net internal volumes! Driver displacement, port displacement and brace displacement must be added to obtain the final gross internal volume. All enclosure dimensions above have already taken this into account
When using multiple subwoofers in a common enclosure you will need to recalculate the enclosure and port dimensions. For assistance please contact your authorized JL Audio dealer or JL Audio Technical Support
We recommend the use of this speaker in a bi-amplified system using high-quality satellite speakers and a high-quality amplifier. We do not recommend the use of this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance
All specifications are subject to change without notice

Safety Notice:

Prolonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss. This high-performance speaker can exceed this level. Please exercise restraint in its operation in order to preserve your ability to enjoy its fidelity
When installing a subwoofer in your vehicle, it is extremely important to secure the enclosure firmly. We recommend bolting the enclosure through the metal of the floorpan or the frame of the vehicle with large diameter washers for reinforcement. If an enclosure is not firmly attached, it can become a projectile in a collision. This is particularly important in a hatchback, station wagon, sports utility vehicle, or van

What's in the Box:

One 12" Thin-Line subwoofer
Owner's manual
Voice coil connection warning

Most products include a limited one year manufacturer’s warranty covering defects in materials and workmanship under normal use. Warranty coverage does not apply to improper installation, misuse, or damage caused by operation outside manufacturer specifications. For complete warranty terms, exclusions, and claim procedures, please visit our full Warranty Policy page.

Fast shipping across Canada from our Toronto warehouse. Most orders ship within 1–2 business days. Shipping costs and delivery estimates are calculated at checkout. Returns are accepted on eligible items that are unused and in original packaging within our return period. For full details, please view our Shipping Policy and Returns & Exchanges Policy.

Please note that final sale, clearance, open-box, and refurbished items are not eligible for returns or refunds. These items may only be covered under their respective warranty or exchange terms where applicable. For full details regarding open-box items, please review our Open Box Policy.