JL Audio
13.5" Subwoofer

JL Audio 13TW5v2-4
JL Audio 13TW5v2-4 JL Audio 13TW5v2-4 JL Audio 13TW5v2-4 JL Audio 13TW5v2-4 JL Audio 13TW5v2-4 JL Audio 13TW5v2-4 JL Audio 13TW5v2-4


Our patented thin-line woofer technology compresses the architecture of the 13TW5v2 using a “concentric tube” structure that supports the 7-inch diameter voice coil and the suspension attachments. This permits placement of the large motor structure much further forward in the speaker than with conventional designs, while allowing excellent linear excursion capability and mechanical stability.

To unleash even more performance from this technology, the v2 improves upon the original 13TW5 with 13% greater linear excursion capability. The cast alloy chassis has also been modified for greater strength and the redesigned motor now features an annular vent. The v2 is also available in single 2 ohm and single 4 ohm voice coil versions to fit a wide range of applications.

In keeping with its “tight-spaces” mission, the 13TW5v2 is optimized for enclosures that are far smaller than most 12-inch woofers require and only a bit larger than the air space needs of a typical, small-box 10-inch woofer. The mounting system is designed to fit in about the same footprint as a typical 12-inch woofer.

The 13TW5v2 is best used with amplifier power in the 250W - 600W range and is optimized to operate in a 0.80 cu. ft. (22.7 L) sealed enclosure. Detailed enclosure recommendations can be found in the “Specifications” tab.

Never has such high-quality sub-bass been possible in the most challenging installation applications.

Dynamic Motor Analysis - DMA Optimized Motor

JL Audio's proprietary Dynamic Motor Analysis system is a powerful suite of FEA-based modeling systems, first developed by JL Audio in 1997 and refined over the years to scientifically address the issue of speaker motor linearity. This leads to vastly reduced distortion and faithfully reproduced transients... or put simply: tight, clean, articulate bass.

Floating Cone Attach Method - FCAM™

JL Audio's patented FCAM™ technology is an innovative method of bonding the surround/cone assembly to the voice coil former/spider assembly. This feature helps ensure concentricity of the surround, spider and voice coil without torquing the suspension to achieve it. This allows for the inevitable, slight variations in production part dimensions without having them negatively impact the integrity of the suspension and coil-centering at high excursions.

Tab-Ear Frame Design

By employing a tab-ear mounting system, the driver's overall outside dimensions are reduced, permitting it to be mounted in a space that is very similar to that required by the next smaller round woofer frame.

In this example, the “Tab-Ear” frame design allows a 13TW5 13.5-inch driver to fit in a space only slightly larger than a conventional 12-inch woofer requires (only 0.44 in. / 11.2 mm bigger)

Concentric Tube Suspension

Concentric Tube Suspension™ technology delivers unprecedented excursion in a low-profile woofer.

The biggest challenge in any low-profile woofer design is to create enough mechanical clearance for the speaker to generate enough excursion to meet its output and low-frequency extension goals. Since these goals were very ambitious in the development of JL Audio's low profile woofers, achieving them required development of a new suspension architecture.

JL Audio's solution employs a molded structure which spans over the edge of the motor system, supporting the spider on the outside of the motor's boundaries and the large diameter voice coil on the inside. The large diameter 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 us place the motor system higher up into the cone body's space to further compress depth, while still permitting excellent mechanical excursion.

Built-In USA with Global Components

At a time when most audio products are built overseas, JL Audio’s commitment to in-house loudspeaker production continues to grow. To pull this off in a competitive world market, our production engineering team has created one of the world’s most advanced loudspeaker assembly facilities and established a global network of quality component suppliers who build to our specifications. This, combined with our commitment to state-of-the-art assembly technology, allows our skilled workforce to efficiently build JL Audio products to extremely high quality standards, right here in the U.S.A.



Continuous Power Handling (RMS)
600W RMS
Recommended Amplifier Power (RMS)
250W - 600W RMS
Nominal Impedance (Znom)


Nominal Diameter
13.5” / 345 mm
Overall Diameter (A)
A1: 14.2” / 361 mm
A1: 13” / 330 mm
Mounting Hole Diameter (B)
12.5” / 318 mm
Bolt Hole Circle Diameter (C)
13.5” / 343 mm
Motor Outer Diameter (D)
6.75” / 171 mm
Mounting Depth (E)
2.625” / 67 mm
Driver Displacement
0.052 cu ft / 1.47 L
Net Weight
20.5 lb / 9.3 kg


Free Air Resonance (Fs)
27.61 Hz
Electrical “Q” (Qes)
Mechanical “Q” (Qms)
Total Speaker “Q” (Qts)
Equivalent Compliance (Vas)
2.13 cu ft / 60.31 L
One-Way Linear Excursion (Xmax)
0.433” / 11 mm
Reference Efficiency (no)
Efficiency (1 W / 1 m)
85.63 dB SPL
Effective Piston Area (Sd)
98.26 sq in / 0.0634 sq m
DC Resistance (Re)
3.513 Ω

Sealed Enclosure Specifications

Wall Thickness
0.75” / 19 mm
Front Baffle Thickness
0.75” / 19 mm
Volume (net int.)
0.80 cu ft / 22.66 L
External Width (W)
19” / 483 mm
External Height (H)
15” / 381 mm
External Depth (D)
7.75” / 197 mm
41.42 Hz
52.84 Hz

Enclosure Notes

*The enclosure recommendations listed above are external dimensions which assume the use of 0.75” (19 mm) thick material. If you are using 0.625” (16 mm) thick material, subtract 0.25” (6) from each dimension. Do not use any material with a thickness of less than 0.625” (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 multiple subwoofers 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 speaker in a bi-amplified system using high-quality satellite speakers and a high-quality amplifier. We do not recommend the use of this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance.

*All specifications are subject to change without notice.

Safety Notice

Prolonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss. This high-performance speaker can exceed this level. Please exercise restraint in its operation in order to preserve your ability to enjoy its fidelity.

When installing a subwoofer in your vehicle, it is extremely important to secure the enclosure firmly. We recommend bolting the enclosure through the metal of the floorpan or the frame of the vehicle with large diameter washers for reinforcement. If an enclosure is not firmly attached, it can become a projectile in a collision. This is particularly important in a hatchback, station wagon, sports utility vehicle, or van.

More Information
Brand JL Audio
RMS Power 250W RMS
Shallow Mount Yes
Subwoofer Size 13"