Skar Audio VXF-15 D2
Best box: 60.3 L bass reflex tuned to 38.1 Hz · F3 36.2 Hz
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Comparable 15.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Skar Audio VXF-15 D2 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
- The textbook alignment (60.3 L at 33.1 Hz) would need a 128.2 cm port; the recommendation is retuned to 60.3 L at 38.1 Hz so the port can be built.
- Port length (97.3 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) | 60.3 Liters |
| Tuning Frequency (Fb) | 38.1 Hz |
| F3 (-3 dB Cutoff) | 36.2 Hz |
| F6 / F10 Extension | 32.8 Hz / 29.2 Hz |
| Port Inner Diameter | Ø 20.4 cm |
| Port Physical Length | 97.3 cm |
| First Pipe Resonance | 177.0 Hz |
| Estimated MOL @ F3 | 122.2 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 26.4 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 60.5 Hz |
| F3 (-3 dB Cutoff) | 66.7 Hz |
| F6 / F10 Extension | 48.7 Hz / 35.9 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 31.4 Hz |
| Total Q (Qts) | 0.36 |
| Electrical Q (Qes) | 0.391 |
| Mechanical Q (Qms) | 4.5 |
| Equivalent Volume (Vas) | 75.5 Liters |
| Diaphragm Area (Sd) | 779.3 cm² |
| DC Resistance (Re) | 3.9 Ω |
| Efficiency Bandwidth Product (EBP) | 80.2 |
| Linear Excursion (Xmax) | 30.0 mm |
| Thermal Power (Pe) | 3000.0 W |
| Nominal Diameter | 15.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Skar Audio VXF-15 D2?
Load Forge's calculated alignment puts Skar Audio VXF-15 D2 in a 60.3 liter vented enclosure tuned to 38.1 Hz, reaching an F3 cutoff of approximately 36.2 Hz.
Can Skar Audio VXF-15 D2 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 26.4 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 66.7 Hz.
What port dimensions should be used for Skar Audio VXF-15 D2 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 20.4 cm with a length of 97.3 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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