JL Audio 12TW3-D4 12" inch Subwoofer, Dual 4 Ohm Voice Coils, 400 Watts 92185

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.

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

 

Continuous Power Handling (RMS)	400 W
Recommended Amplifier Power (RMS)	200 - 400 W
Nominal Impedance (Znom)	Dual 4 Ω

 

Physical Specifications

Nominal Diameter	12 in / 300 mm
Overall Diameter (A)	A1: 13.2 in / 335 mm A2: 12.5 in / 318 mm
Mounting Hole Diameter (B)	11.625 in / 295 mm
Bolt Hole Circle Diameter (C)	12.5 in / 318 mm
Motor Outer Diameter (D)	6.125 in / 156 mm
Mounting Depth (E)	3.5 in / 89 mm
Driver Displacement	0.029 cu ft / 0.82 L
Net Weight	14.9 lb / 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
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.

 

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