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JL Audio 12TW3 - Thin-line 12 Inch Subwoofer - 400W

£379.99 £409.98

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Ohm Option: 4 Ohm

  • 4 Ohm
  • 8 Ohm

Speaker Grille: Speaker Only

  • Speaker Only
  • Speaker with Grille
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The JL Audio 12TW3 - Thin-Line 12 Inch Subwoofer delivers 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.

Deep, powerful and accurate JL Audio bass is now possible in more applications than ever.


  • 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

Technical Specifications

SUBWOOFER 12TW3 - D4 12TW3 - D8
Free Air Resonance (Fs): 26.46 Hz 32.660 Hz
Electrical “Q” (Qes): 0.558 0.715
Mechanical “Q” (Qms): 10.766 10.071
Total Speaker “Q” (Qts): 0.531 0.668
Equivalent Compliance (Vas): 48.73 Litres 34.12 litres
One-way, Linear Excursion (Xmax): 0.6 in / 15.2 mm 15.2 mm
Efficiency (1W/1m): 84.11 dB SPL 84.23 dB SPL
Effective Piston Area (Sd): 0.0539 m2 0.0539 m2
DC Resistance (Re): 9.280 ohm 14.800 ohm
Nominal Impedance: Dual 4-ohm voice coils Dual 8-ohm voice coils
Power Handling (continuous): 400 W 400 W

Further Information

JL Audio 12TW3 - Thin-line 12 Inch Subwoofer 400W - Dual - User Manual

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