JL Audio 13TW5v2-2
Best box: 90.8 L bass reflex tuned to 20.6 Hz · F3 22.7 Hz
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Comparable 13.5" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the JL Audio 13TW5v2-2 does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
⚠️ Engineering Notice for Builders
- Port length (86.5 cm) exceeds a straight internal run; use an elbow bend, slotted vent or 3D folded duct to fit the enclosure.
Recommended Bass Reflex (Vented)
PORT NEEDS ELBOW / 3D| Net Box Volume (Vb) | 90.8 Liters |
| Tuning Frequency (Fb) | 20.6 Hz |
| F3 (-3 dB Cutoff) | 22.7 Hz |
| F6 / F10 Extension | 18.0 Hz / 15.6 Hz |
| Port Inner Diameter | Ø 12.5 cm |
| Port Physical Length | 86.5 cm |
| First Pipe Resonance | 199.0 Hz |
| Estimated MOL @ F3 | 110.4 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 76.3 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 36.5 Hz |
| F3 (-3 dB Cutoff) | 37.3 Hz |
| F6 / F10 Extension | 28.1 Hz / 21.2 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 27.6 Hz |
| Total Q (Qts) | 0.528 |
| Electrical Q (Qes) | 0.57 |
| Mechanical Q (Qms) | 7.2 |
| Equivalent Volume (Vas) | 60.5 Liters |
| Diaphragm Area (Sd) | 700.0 cm² |
| DC Resistance (Re) | 1.95 Ω |
| Efficiency Bandwidth Product (EBP) | 48.4 |
| Linear Excursion (Xmax) | 15.0 mm |
| Thermal Power (Pe) | 600.0 W |
| Nominal Diameter | 13.5" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for JL Audio 13TW5v2-2?
Load Forge's calculated alignment puts JL Audio 13TW5v2-2 in a 90.8 liter vented enclosure tuned to 20.6 Hz, reaching an F3 cutoff of approximately 22.7 Hz.
Can JL Audio 13TW5v2-2 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 76.3 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 37.3 Hz.
What port dimensions should be used for JL Audio 13TW5v2-2 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 12.5 cm with a length of 86.5 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
Embed this design card on DIYAudio, AVSForum, Reddit, or Facebook. It shows the calculated F3, MOL (when the power rating is published) and box parameters.
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