Compact sub on a mission
JL Audio designed their TW1 subwoofers for tight spaces and tiny enclosures. Their 12TW1-4 12" subwoofer operates efficiently in an enclosure of only 0.65 cubic feet and, at only 4-5/8" deep, this workhorse will fit in all kinds of tight spots you wouldn't expect a subwoofer to go. You can power this sub with up to 300 watts RMS, so it's perfect for medium-sized systems.
At only 4-5/8" deep, this TW1 sub can fit in some seriously small spaces.
Unique construction
The injection-moulded mica-filled polypropylene cone with its rubber surround is housed in a specially designed cast-alloy frame, while JL Audio's patented concentric tube suspension allows the speaker's components to fit together more closely for a smaller profile. If you're looking for a subwoofer that brings maximum boom to minimal space, you're looking in the right place.
Highlights:
- 12" 4-ohm subwoofer
- mica-filled polypropylene injection-molded cone with rubber surround
- power range: 75-300 watts RMS
- peak power handling: 600 watts
- frequency response: 24-200 Hz
- sensitivity: 85.15 dB
- top-mount depth: 4.61"
- sealed box volume: 0.65 cubic feet
- ported box volume: 1.125 cubic feet
- warranty: 1 year
- mica-filled polypropylene injection-molded cone with rubber surround
- power handling: 300 watts RMS (600 watts peak)
- top-mount depth: 4.61"
- MFR # 010-03213-00
- Item # 13612TW14
What's in the box:
JL Audio 12TW1-4 owner's manual
- One 12" Thin-Line subwoofer
- Grille
- Owner's manual
- On-line product registration information
Features & specs
| Features and Specs | ||
|---|---|---|
| Size | 12-inch | |
| Impedance (Ohms) | 4 | |
| Cone Material | Mica-filled Polypropylene | |
| Surround Material | Rubber | |
| Basket Material | Cast Alloy | |
| Grille | Black steel mesh | |
| Free-Air | No | |
| Dual Voice Coil | No | |
| Sensitivity | 85.15 dB at 1 watt |
|
| Frequency Response | 24 - 200 Hz | |
| Max RMS Power Handling | 300 | |
| Peak Power Handling (Watts) | 600 | |
| Top Mount Depth (inches) | 4 5/8 | |
| Bottom Mount Depth (inches) | N/A | |
| Cutout Diameter or Length (inches) | 11 1/16 | |
| Frame Width | 12.406 | |
| Frame Length | 12.406 | |
| Vas (liters) | 33.67 | |
| Fs (Hz) | 32.35 | |
| Qts | 0.529 | |
| Xmax (millimeters) | 10 | |
| Parts Warranty | 1 Year | |
| Labor Warranty | 1 Year | |
| Box Requirements | ||
| Ideal Sealed Box Volume (cubic feet) | 0.65 | |
| Minimum Sealed Box Volume (cubic feet) | 0.52 | |
| Maximum Sealed Box Volume (cubic feet) | 0.95 | |
| Ideal Ported Box Volume (cubic feet) | 1.125 | |
| Minimum Ported Box Volume (cubic feet) | 0.9 | |
| Maximum Ported Box Volume (cubic feet) | 1.36 | |
| Port diameter (inches) | N/A | |
| Port length (inches) | N/A | |
Product Research
Features
Enclosure Compatibility
Features
Thin-Line Design: JL Audio's patented thin-line woofer technology compresses the architecture of the 12TW1-4 subwoofer and allows it to deliver great bass performance in tight space applications (less than 4-5/8" deep). Central to the technology is the Concentric Tube structure that supports the oversized voice coil and the suspension attachments. This permits placing the motor structure much further forward in the speaker than conventional designs, while maintaining excellent linear excursion capability. Equally important, the 12TW1-4 is designed for extremely small enclosure applications (0.65 ft³ sealed and 1.125 ft³ ported) and there is no pole vent, so no space is needed between the woofer and the back of the enclosure.
Concentric Tube Suspension: JL Audio's patented Concentric Tube Suspension employs a molded structure which spans beyond the edge of the motor structure, supporting the spider on the outside of the motor's boundaries and the large diameter voice coil on the inside. The large voice coil permits the magnet to sit inside it, rather than surrounding the coil as is typical in most woofers. The concentric tube structure and the elimination of a conventional top-plate helps JL Audio place the motor higher up into the cone body's space to further compress depth, while still permitting excellent mechanical excursion.
Mica-Filled Polypropylene Woofer: The subwoofer features an injection-molded, mica-filled polypropylene cone with a rubber surround for added durability, excursion and bass response.
Dynamic Motor Analysis (DMA): DMA is JL Audio's proprietary method of improving dynamic motor behavior. As a result of DMA optimization, the 12TW1-4 motor remains linear over a long excursion range, and also maintains a stable fixed magnetic field in the gap over a wide power range. The result is reduced distortion, faithfully reproduced transients, and tight, articulate bass.
Floating Cone Attachment Method (FCAM): JL Audio's patented FCAM technology is an innovative method of bonding the surround/cone assembly to the voice coil/spider assembly. This assembly technique ensures proper surround geometry in the assembled speaker for better excursion control and dynamic voice coil alignment.
Enclosure Compatibility
Sealed Box Volume: JL Audio recommends a sealed box volume of 0.65 ft³. A diagram is provided in the owner's manual for a sealed box with external dimensions of 26-1/2" W x 14" H x 5-1/2" D, assuming 3/4" thick material. (If you are using 5/8" thick materials, subtract 1/4" from each dimension.)
Ported Box Volume: JL Audio recommends a ported box volume of 1.125 ft³. A diagram is provided in the owner's manual for a ported box with external dimensions of 31-3/4" W x 16" H x 7" D, assuming 3/4" thick material. (If you are using 5/8" thick materials, subtract 1/4" from each dimension.) A slot port is recommended with the following dimensions:
- Slot Width: 5-1/2"
- Slot Height: 2-1/4"
- Slot Length: 22-5/8"