Description
JL Audio 12TW1-4
TW1 12-inch Subwoofer Driver (300 W, 4 Ω)
Built on JL Audio's patented thin-line subwoofer technology, the 12TW1 delivers a powerful combination of shallow mounting depth and excursion capability, while operating in insanely small enclosures (0.65 cu.ft. / 18.4 liters). This, combined with a special cast alloy frame design, makes the 12TW1 capable of operating in extremely tight spaces. These include under-seat installations in trucks, 2-seat sports cars and many other creative applications requiring a compact, low profile subwoofer design.
JL Audio's patented thin-line woofer technology compresses the architecture of the 12TW1 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 a large motor structure further forward in the speaker than with conventional designs.
The 12TW1 also features a clever frame design that minimizes the frontal clearance required for the excursion of the driver. This is accomplished by recessing the suspension attachment surface, so that most of the forward excursion occurs within the frame's dimensions. Thanks to this feature, the 12TW1 requires only 0.87 inches (22 mm) of frontal clearance, even with its grille installed. This allows for more efficient use of space and increased enclosure volume within a given overall depth.
Even though the 12TW1 is optimized for an enclosure much smaller than any other JL Audio twelve-inch subwoofer driver, it never sounds like a big woofer struggling in a tiny box...instead, it delivers all the rich, deep, controlled bass you have come to expect from a JL Audio subwoofer system.
- Very shallow mounting depth (4.62 in / 117 mm)
- No pole vent: permits mounting close to rear wall of enclosure
- Extremely small sealed enclosure volume requirements
- Long linear excursion capability (0.40 in / 10 mm, one-way)
- DMA-optimized motor design
- Patented "concentric tube" architecture
- Patented "floating cone attach method" technology
- Cast alloy frame with flat edges for tight driver grouping
- Injection molded, mica-filled polypropylene cone
- Rubber surround
- Steel mesh grille included with each driver
- Precision-built in USA with Global Components at JL Audio's Miramar, Florida factory
General Specifications
| Continuous Power Handling (RMS) | 300 W |
| Recommended Amplifier Power (RMS) | 75 - 300 W |
| Nominal Impedance (Znom) | 4 Ω |
Physical Specifications
| Nominal Diameter | 12.0 in / 300 mm |
| Overall Diameter (A) | 12.375 in / 314 mm |
| Mounting Hole Diameter (B) | 11.0625 in / 281 mm |
| Bolt Hole Circle Diameter (C) | 11.7 in / 297 mm |
| Motor Outer Diameter (D) | 5.71 in / 145 mm |
| Mounting Depth (E) | 4.62 in / 117 mm |
| Front Grille Protrusion (F) | 0.87 in / 22 mm |
| Driver Displacement | 0.072 cu ft / 2.04 L |
| Net Weight | 16.5 lb / 7.5 kg |
Parameters
| Free Air Resonance (Fs) | 35.06 Hz |
| Electrical “Q” (Qes) | 0.61 |
| Mechanical “Q” (Qms) | 10.662 |
| Total Speaker “Q” (Qts) | 0.577 |
| Equivalent Compliance (Vas) | 1.008 cu ft / 28.54 L |
| One-Way Linear Excursion (Xmax)* | 0.40 in / 10.0 mm |
| Efficiency (1 W / 1 m)** | 85.07 dB SPL |
| Effective Piston Area (Sd) | 67.608 sq in / 0.0436 sq m |
| DC Resistance (Re) | 3.514 Ω |
Sealed Enclosure Specifications
| Wall Thickness | 0.75 in / 19 mm |
| Front Baffle Thickness | 0.75 in / 19 mm |
| Volume (net int.) | 0.65 cu ft / 18.41 L |
| External Width (W) | 26.50 in / 673 mm |
| External Height (H) | 14 in / 356 mm |
| External Depth (D) | 5.50 in / 140 mm |
| F3 | 45.83 Hz |
| Fc | 55.99 Hz |
| Qtc | 0.92 |
Ported Enclosure Specifications
| Wall Thickness | 0.75 in / 19 mm |
| Front Baffle Thickness | 0.75 in / 19 mm |
| Volume (net int.) | 1.125 cu ft / 31.86 L |
| External Width (W) | 31.75 in / 806 mm |
| External Height (H) | 16 in / 406 mm |
| External Depth (D) | 7 in / 178 mm |
| Internal Slot Port Width (SW) | 5.50 in / 140 mm |
| Internal Slot Port Height (SH) | 2.25 in / 57 mm |
| Internal Slot Port Length (SL) | 22.625 in / 575 mm |
| Port Extension Length (EL) | 20.75 in / 527 mm |
| Tuning Frequency (Fb) | 34.0 Hz |
| F3 | 31.52 Hz |
Used Frequently Asked Questions
- What does used mean? Used products may be unused customer returns that are essentially "new" items, or they may be previously installed products that were returned under warranty or during our return policy period.
- What is the warranty? All of our used items come with a 90-day warranty.
- What's it look like? All of our used items are inspected and graded by our returns team at our facilities. They will test them and grade them to one of four standard gradings: Used Open Box, Used Very Good, Used Good, and Used Acceptable. Please see the following descriptions of each grade - also note that if an item falls under ANY of the criteria for a certain grade, even though the rest of the product is better, we will give it the lowest grade.
- Used Open Box An item in perfect working condition. Original protective wrapping may be missing, but the original packaging is intact and in good condition with minor damage possible. Instructions are included.
- Used Very Good A well-cared-for item with limited use, remains in good working condition. The item may show some limited signs of wear,small scratches,cosmetic blemishes. Item may arrive with damaged packaging or be repackaged and could be missing some accessories.
- Used Good The item shows wear from use, remains in good condition and functions properly. May have damaged packaging or be repackaged. It may be marked, have identifying markings on it, have minor cosmetic damage. It may be missing some parts or accessories.
- Used Acceptable The item is fairly worn but continues to function properly. While repackaged; signs of wear can include aesthetic issues; scratches, dents. The item may have markings on it or show signs of previous use. Item may be missing some parts or accessories.
- Have more questions? Call us, send us a chat, or an email. We'll be able to answer any additional questions you may have.