Skar Audio ZVX-18v2 D1
Best box: 224.2 L bass reflex tuned to 28.1 Hz · F3 25.1 Hz
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Comparable 18.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Skar Audio ZVX-18v2 D1 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 (224.2 L at 20.8 Hz) would need a 82.8 cm port; the recommendation is retuned to 224.2 L at 28.1 Hz so the port can be built.
- Large enclosure volume (224.2 L) requires extensive internal matrix bracing to prevent panel resonance.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 224.2 Liters |
| Tuning Frequency (Fb) | 28.1 Hz |
| F3 (-3 dB Cutoff) | 25.1 Hz |
| F6 / F10 Extension | 23.2 Hz / 20.9 Hz |
| Port Inner Diameter | Ø 21.0 cm |
| Port Physical Length | 43.6 cm |
| First Pipe Resonance | 394.0 Hz |
| Estimated MOL @ F3 | 122.3 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 138.2 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 37.0 Hz |
| F3 (-3 dB Cutoff) | 42.8 Hz |
| F6 / F10 Extension | 29.9 Hz / 21.4 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 26.1 Hz |
| Total Q (Qts) | 0.49 |
| Electrical Q (Qes) | 0.545 |
| Mechanical Q (Qms) | 4.84 |
| Equivalent Volume (Vas) | 149.5 Liters |
| Diaphragm Area (Sd) | 1164.0 cm² |
| DC Resistance (Re) | 1.6 Ω |
| Efficiency Bandwidth Product (EBP) | 47.9 |
| Linear Excursion (Xmax) | 29.0 mm |
| Thermal Power (Pe) | 3200.0 W |
| Nominal Diameter | 18.0" |
| 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 ZVX-18v2 D1?
Load Forge's calculated alignment puts Skar Audio ZVX-18v2 D1 in a 224.2 liter vented enclosure tuned to 28.1 Hz, reaching an F3 cutoff of approximately 25.1 Hz.
Can Skar Audio ZVX-18v2 D1 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 138.2 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 42.8 Hz.
What port dimensions should be used for Skar Audio ZVX-18v2 D1 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 21.0 cm with a length of 43.6 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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