Audax PR330T0
Best box: 104.8 L bass reflex tuned to 48.4 Hz · F3 44.5 Hz
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Comparable 13.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Audax PR330T0 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) | 104.8 Liters |
| Tuning Frequency (Fb) | 48.4 Hz |
| F3 (-3 dB Cutoff) | 44.5 Hz |
| F6 / F10 Extension | 40.4 Hz / 36.1 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 2.4 cm |
| First Pipe Resonance | 7051.0 Hz |
| Estimated MOL @ F3 | 117.0 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 46.6 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 82.9 Hz |
| F3 (-3 dB Cutoff) | 84.4 Hz |
| F6 / F10 Extension | 63.6 Hz / 47.9 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 55.0 Hz |
| Total Q (Qts) | 0.44 |
| Electrical Q (Qes) | 0.486 |
| Mechanical Q (Qms) | 4.67 |
| Equivalent Volume (Vas) | 73.7 Liters |
| Diaphragm Area (Sd) | 538.0 cm² |
| DC Resistance (Re) | 6.0 Ω |
| Efficiency Bandwidth Product (EBP) | 113.2 |
| Linear Excursion (Xmax) | 4.0 mm |
| Thermal Power (Pe) | N/A W |
| Nominal Diameter | 13.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Audax PR330T0?
Load Forge's calculated alignment puts Audax PR330T0 in a 104.8 liter vented enclosure tuned to 48.4 Hz, reaching an F3 cutoff of approximately 44.5 Hz.
Can Audax PR330T0 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 46.6 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 84.4 Hz.
What port dimensions should be used for Audax PR330T0 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 2.4 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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