Wavecor SW215WA02 8-1/2" Balanced Drive Paper Cone Subwoofer 8 Ohm
Best box: 39.1 L bass reflex tuned to 27.9 Hz · F3 26.8 Hz
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Comparable 8.5" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Wavecor SW215WA02 8-1/2" Balanced Drive Paper Cone Subwoofer 8 Ohm does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 39.1 Liters |
| Tuning Frequency (Fb) | 27.9 Hz |
| F3 (-3 dB Cutoff) | 26.8 Hz |
| F6 / F10 Extension | 23.5 Hz / 20.9 Hz |
| Port Inner Diameter | Ø 6.8 cm |
| Port Physical Length | 30.9 cm |
| First Pipe Resonance | 557.0 Hz |
| Estimated MOL @ F3 | 108.0 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 24.1 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 49.7 Hz |
| F3 (-3 dB Cutoff) | 50.0 Hz |
| F6 / F10 Extension | 37.7 Hz / 28.4 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 35.0 Hz |
| Total Q (Qts) | 0.49 |
| Electrical Q (Qes) | 0.514 |
| Mechanical Q (Qms) | 10.7 |
| Equivalent Volume (Vas) | 26.1 Liters |
| Diaphragm Area (Sd) | 206.0 cm² |
| DC Resistance (Re) | 6.3 Ω |
| Efficiency Bandwidth Product (EBP) | 68.2 |
| Linear Excursion (Xmax) | 10.0 mm |
| Thermal Power (Pe) | 400.0 W |
| Nominal Diameter | 8.5" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Wavecor SW215WA02 8-1/2" Balanced Drive Paper Cone Subwoofer 8 Ohm?
Load Forge's calculated alignment puts Wavecor SW215WA02 8-1/2" Balanced Drive Paper Cone Subwoofer 8 Ohm in a 39.1 liter vented enclosure tuned to 27.9 Hz, reaching an F3 cutoff of approximately 26.8 Hz.
Can Wavecor SW215WA02 8-1/2" Balanced Drive Paper Cone Subwoofer 8 Ohm be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 24.1 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 50.0 Hz.
What port dimensions should be used for Wavecor SW215WA02 8-1/2" Balanced Drive Paper Cone Subwoofer 8 Ohm to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 6.8 cm with a length of 30.9 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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