JL Audio 12TW3-D4
12" (30cm) subwoofer
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Description
The 12TW3-D4 from JL Audio is a 12-inch (30cm) subwoofer in a class of its own. Quality and performance come together in this specially designed subwoofer, known for its powerful combination of shallow depth and high excursion. With innovative technology based on the TW5 thin-line subwoofer, the 12TW3-D4 offers remarkable performance and excursion that surpasses even the W3v3 subwoofers. Designed for small enclosures, it offers optimum sound quality in a small footprint. Also note its special features such as the low installation depth, the long linear excursion and the DMA-optimized motor design. The aluminum rear cover and dust cap with the JL Audio logo are also eye-catching.
Features
- Building on the core technology of JL's TW5 thin-line subwoofers, the TW3s offer a powerful combination of low installation depth and high excursion. They are even able to realize greater excursion than the W3v3 subwoofers.
- To enable this remarkable performance, JL Audio's patented Thin-Line woofer technology compresses the TW3's architecture through a "concentric tube" structure built into the injection-molded cone body. This structure supports the voice coil and a full-ring spider while allowing the large motor structure to be placed further forward in the speaker than conventional designs.
- The TW3 are optimized for small enclosures and feature JL's lug mounting design to maximize the cone area within their mounting surface.
- Very shallow installation depth (3.50 inches)
- Very low requirements for the volume of the sealed housing
- Very long linear deflection (0.60 in / 15.2 mm, one-way linear deflection)
- DMA-optimized motor designs
- Cast alloy frame
- Membrane made of injection-molded, mica-filled polypropylene
- Rubber surround
- Aluminum alloy dust cap and back cover with JL Audio logo
- Precision engineered in the USA at the JL Audio factory in Miramar, Florida, with global components
- SGR-12TW3 Grille optional
General specifications
- Continuous load capacity (RMS) : 400 W
- Recommended amplifier power (RMS) : 200 - 400 W
- Nominal impedance (Znom) : Dual 4 Ω
Dimensions
- Nominal diameter : 12 inch / 300 mm
- Overall diameter (A) : A1: 335 mm / 13.2 inch
- Minimum diameter A2 : 318 mm / 12.5 inches
- Installation diameter (B) : 295 mm / 11.625 inch
- Bolt circle diameter (C) : 318 mm / 12.5 inch
- Motor outer diameter (D): 156 mm / 6.125 inches
- Installation depth (E) : 89 mm (3.5 inch)
- Volume displacement : 0.029 cu ft / 0.82 L
- Net weight : 14,9 lb / 6,8 kg
Parameters
- Free air resonance frequency (Fs) : 26.46 Hz
- Electrical "Q" (Qes) : 0.558
- Mechanical "Q" (Qms) : 10.766
- Total quality "Q" (Qts) : 0.531
- Equivalent volume (Vas) : 1.72 cu ft / 48.73 L
- One-way linear deflection (Xmax) : 0.6 inch / 15.2 mm
- Efficiency (1 W / 1 m) : 84.11 dB SPL
- Membrane area (Sd) : 0.0539 square meter
- Direct current resistance (Re) : 9.280 Ω
Closed housing specifications
- Wall thickness: 19 mm / 0.75 inch
- Thickness of the front baffle: 19 mm / 0.75 inch
- Volume (net int.) : 0.80 cu ft / 22.7 L
- Outer width (W) : 540 mm / 21.25 inch
- Outer height (H) : 406 mm (16 inch)
- Outer depth (D) : 6.5 inch / 165 mm
- F3 : 37.99 Hz
- Fc : 46.97 Hz
- Qtc : 0,9426
Specifications for bass reflex enclosures
- Wall thickness: 19 mm / 0.75 inch
- Thickness of the front baffle: 19 mm / 0.75 inch
- Volume (net int.) : 0.95 cu ft / 26.9 L
- Outer width (W): 762 mm (30 inches)
- Outer height (H) : 422 mm / 16.625 inch
- Outer depth (D) : 6.50 inch / 165 mm
- Internal slot connection width (SW): 127 mm / 5 inches
- Internal slot height (SH): 64 mm / 2.50 inches
- Internal slot connection length (SL): 794 mm (31.25 inch)
- Length of the port extension (EL): 660 mm / 26 inches
- Tuning frequency (Fb) : 32.14 Hz
- F3 : 32.52 Hz
