JL Audio TW1 Thin-Line Car Subwoofer

12" Single 4 ohm (12TW1-4)

Part Number 010-03213-00

ONLINE STORE

Feature
Specs
In The Box
Update
Accessories
Compatible Devices

DESIGNED TO EXCEL IN PREVIOUSLY IMPOSSIBLE SPACES

Offering a powerful combination of shallow mounting depth, minimal frontal clearance and ultracompact enclosure requirements, the TW1 subwoofers are an outstanding choice for the tightest space applications. Their thin-line technology extracts the maximum in bass sound quality and output from a uniquely space-efficient architecture.

DELIVERS DEEP, POWERFUL BASS PERFORMANCE IN TIGHT-SPACE INSTALLATIONS

CHOOSE FROM 10- OR 12-INCH TW1 THIN-LINE SUBWOOFERS

EXTREMELY SMALL (0.35 CUBIC FEET) ENCLOSURE VOLUME REQUIREMENTS

THIN-LINE FRAME DESIGN MINIMIZES EACH SUBWOOFER’S NEED FOR FRONTAL CLEARANCE

PAIRS BEST WITH AMPLIFIER POWER IN THE 75- TO 300-WATT RANGE

1-YEAR WARRANTY

WHAT YOU'LL LOVE

RECESSED SUSPENSION

With the TW1 subwoofers’ low-profile suspension design, most of the forward excursion of the driver occurs within the frame’s dimensions — requiring only 0.87 inches of frontal clearance, even with the supplied grille installed. This allows for more efficient use of space and increased enclosure volume within a given overall depth.

ENGINEERED FOR BIG SOUND FROM A SMALL ENCLOSURE

In keeping with their “tight spaces” mission, the TW1 subwoofers deliver a powerful combination of shallow mounting depth and outstanding excursion capability to generate smooth and powerful bass from a remarkably compact enclosure.

POLYPROPYLENE CONE TECHNOLOGY

Known for their durability and moisture-resistance in harsh environments, the TW1 series’ injection-molded, mica-filled polypropylene cone design offers impressive frequency response and deep, powerful bass reproduction with minimal distortion.

DYNAMIC MOTOR ANALYSIS (DMA) OPTIMIZED DESIGN

Proprietary motor, suspension and cone modeling systems are used to achieve long, linear excursion capabilities with low distortion and powerful sound output. The result is tight, clean, articulate bass performance at all power levels.

SPACE-SAVING FRAME DESIGN

Benefiting from years of JL Audio woofer design experience, the robust TW1 series speakers feature purpose-engineered cast-alloy frames with flat edges for tight grouping when mounting two or more speakers side-by-side.

POWERFULLY ADAPTABLE

On a wide range of vehicle applications, with sealed or ported enclosures, the TW1 subwoofers deliver superb sound quality and power handling. Both the 10- and 12-inch versions support pairing with amplifiers in the 75- to 300-watt range.

AUDIO TECHNOLOGIES

CONCENTRIC TUBE SUSPENSION TECHNOLOGY

The TW1 series features a patented concentric tube structure built into the injection-molded speaker cone body. This structure supports the voice coil and a full annular spider while permitting the placement of a large motor structure farther forward in the speaker than with conventional designs.

ENGINEERED LEAD-WIRE SYSTEM

Carefully engineered lead-wire design and attachments ensure controlled, quiet lead-wire behavior under the most extreme excursion demands.

General
Warranty	1 year
Sizes	10"/12"
Weight	10": 10.5 lbs (4.8 kg) 12": 16.5 lbs (7.5 kg)
Continuous power handling (RMS)	300 W
Sensitivity (SPL @ 1 W/1 m)	10" (2 Ω): 82.5 dB 10" (4 Ω): 82.2 dB 12" (2 Ω): 85.07 dB 12" (4 Ω): 85.15 dB
Nominal impedance	2 Ω or 4 Ω
Recommended amplifier power (RMS)	75-300 W
Cone material	Mineral-filled polypropylene
Grille(s) included	yes
Networking & Connections
Speaker connections	Spade connectors
Mounting Dimensions
Frame outer diameter	10": 10.375" (264 mm) 12": 12.375" (314 mm)
Mounting depth clearance	10": 4.36" (111 mm) 12": 4.62" (117 mm)
Frontal grille protrusion	0.87" (22 mm)
Mounting hole	10": 9.0625" (230 mm) 12": 11.0625" (281 mm)
Bolt hole circle	10": 9.7" (246 mm) 12": 11.7" (297 mm)
Motor outer diameter	10": 4.54" (115 mm) 12": 5.71" (145 mm)
Driver displacement	10": 0.047 cu ft (1.33 L) 12": 0.072 cu ft (2.04 L)
Parameters
Free Air Resonance (FS)	10" (2 Ω): 41.45 Hz 10" (4 Ω): 38.09 Hz 12" (2 Ω): 35.06 Hz 12" (4 Ω): 32.35 Hz
Electrical “Q” (Qes)	10" (2 Ω): 0.696 10" (4 Ω): 0.639 12" (2 Ω): 0.61 12" (4 Ω): 0.555
Mechanical “Q” (Qms)	10" (2 Ω): 9.7 10" (4 Ω): 10.07 12" (2 Ω): 10.662 12" (4 Ω): 11.066
Total “Q” (Qts)	10" (2 Ω): 0.649 10" (4 Ω): 0.601 12" (2 Ω): 0.577 12" (4 Ω): 0.529
Equivalent Compliance (Vas)	10" (2 Ω): 0.364 cu ft (10.31 L) 10" (4 Ω): 0.429 cu ft (12.15 L) 12" (2 Ω): 1.008 cu ft (28.54 L) 12" (4 Ω): 1.189 cu ft (33.67 L)
One-way linear excursion (Xmax; specs are derived via one-way voice coil overhang method with no correction factors applied)	0.40" (10 mm)
Effective piston area (SD)	10": 41.602 in² (0.0268 m²) 12": 67.608 in² (0.0436 m²)
DC resistance (RE)	10" (2 Ω): 2.428 Ω 10" (4 Ω): 3.516 Ω 12" (2 Ω): 2.430 Ω 12" (4 Ω): 3.514 Ω
Sealed Enclosure Specifications
Wall thickness	0.75" (19 mm)
Front baffle thickness	0.75" (19 mm)
Volume (net int.)	10": 0.35 cu ft (9.91 L) 12": 0.65 cu ft (18.41 L)
External width (W)	10": 16.125" (410 mm) 12": 26.50" (673 mm)
External height (H)	14" (356 mm)
External depth (D)	10": 5.25" (133 mm) 12": 5.50" (140 mm)
-3 dB cutoff frequency (F3)	10" (2 Ω): 48.31 Hz 10" (4 Ω): 47.24 Hz 12" (2 Ω): 45.83 Hz 12" (4 Ω): 45.44 Hz
System resonance (FC)	10" (2 Ω): 59.21 Hz 10" (4 Ω): 56.83 Hz 12" (2 Ω): 55.99 Hz 12" (4 Ω): 54.41 Hz
System Q at resonance (QTC)	10" (2 Ω): 0.927 10" (4 Ω): 0.897 12" (2 Ω): 0.92 12" (4 Ω): 0.89
Ported Enclosure Specifications
Wall thickness	0.75" (19 mm)
Front baffle thickness	0.75" (19 mm)
Volume (net int.)	10": 0.625 cu ft (17.7 L) 12": 1.125 cu ft (31.86 L)
External width (W)	10": 26.625" (676 mm) 12": 31.75" (806 mm)
External height (H)	16" (406 mm)
External depth (D)	10": 5.25" (133 mm) 12": 7" (178 mm)
Internal slot port width	10": 3.75" (95 mm) 12": 5.50" (140 mm)
Internal slot port height	10": 1.875" (48 mm) 12": 2.25" (57 mm)
Internal slot port length	10": 22.50" (572 mm) 12": 22.625" (575 mm)
Port extension length	10": 20.8125" (529 mm) 12": 20.75" (527 mm)
Tuning frequency (FB)	10": 35.0 Hz 12": 34.0 Hz
-3 dB cutoff frequency (F3)	10" (2 Ω): 0.927 10" (4 Ω): 0.897 12" (2 Ω): 0.92 12" (4 Ω): 0.89
Additional
Additional	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 (6.5 mm) 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. When using multiples in a common enclosure you will need to recalculate the enclosure and port dimensions. For assistance please contact your authorized JL Audio dealer or JL Audio Technical Support. We recommend the use of this in a bi-amplified system using high-quality satellites and a high-quality amplifier. We do not recommend the use of this with a passive crossover (coil), as this type of device will adversely affect performance. All specifications are subject to change without notice.

TW1 subwoofer
Grille (installed)

JL Audio TW1 Thin-line Car Subwoofer