Skar Audio VVX-15v3 D4
Best box: 110.0 L bass reflex tuned to 25.6 Hz · F3 24.0 Hz
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Comparable 15.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Skar Audio VVX-15v3 D4 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 (110.0 L at 24.4 Hz) would need a 47.2 cm port; the recommendation is retuned to 110.0 L at 25.6 Hz so the port can be built.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 110.0 Liters |
| Tuning Frequency (Fb) | 25.6 Hz |
| F3 (-3 dB Cutoff) | 24.0 Hz |
| F6 / F10 Extension | 21.7 Hz / 19.5 Hz |
| Port Inner Diameter | Ø 12.5 cm |
| Port Physical Length | 42.1 cm |
| First Pipe Resonance | 409.0 Hz |
| Estimated MOL @ F3 | 115.8 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 102.7 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 42.9 Hz |
| F3 (-3 dB Cutoff) | 53.9 Hz |
| F6 / F10 Extension | 35.9 Hz / 24.8 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 33.3 Hz |
| Total Q (Qts) | 0.54 |
| Electrical Q (Qes) | 0.598 |
| Mechanical Q (Qms) | 5.53 |
| Equivalent Volume (Vas) | 73.3 Liters |
| Diaphragm Area (Sd) | 691.0 cm² |
| DC Resistance (Re) | 6.4 Ω |
| Efficiency Bandwidth Product (EBP) | 55.6 |
| Linear Excursion (Xmax) | 15.5 mm |
| Thermal Power (Pe) | 1200.0 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 VVX-15v3 D4?
Load Forge's calculated alignment puts Skar Audio VVX-15v3 D4 in a 110.0 liter vented enclosure tuned to 25.6 Hz, reaching an F3 cutoff of approximately 24.0 Hz.
Can Skar Audio VVX-15v3 D4 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 102.7 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 53.9 Hz.
What port dimensions should be used for Skar Audio VVX-15v3 D4 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 12.5 cm with a length of 42.1 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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