PURIFI PTT8.0X08-NAB-01
Best box: 54.9 L bass reflex tuned to 25.9 Hz · F3 25.9 Hz
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Comparable 8.5" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the PURIFI PTT8.0X08-NAB-01 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) | 54.9 Liters |
| Tuning Frequency (Fb) | 25.9 Hz |
| F3 (-3 dB Cutoff) | 25.9 Hz |
| F6 / F10 Extension | 22.8 Hz / 20.0 Hz |
| Port Inner Diameter | Ø 6.8 cm |
| Port Physical Length | 24.7 cm |
| First Pipe Resonance | 696.0 Hz |
| Estimated MOL @ F3 | 112.1 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 24.2 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 47.6 Hz |
| F3 (-3 dB Cutoff) | 48.6 Hz |
| F6 / F10 Extension | 36.4 Hz / 27.3 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 24.0 Hz |
| Total Q (Qts) | 0.35 |
| Electrical Q (Qes) | 0.372 |
| Mechanical Q (Qms) | 5.8 |
| Equivalent Volume (Vas) | 74.5 Liters |
| Diaphragm Area (Sd) | 235.1 cm² |
| DC Resistance (Re) | 6.0 Ω |
| Efficiency Bandwidth Product (EBP) | 64.4 |
| Linear Excursion (Xmax) | 9.3 mm |
| Thermal Power (Pe) | N/A 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 PURIFI PTT8.0X08-NAB-01?
Load Forge's calculated alignment puts PURIFI PTT8.0X08-NAB-01 in a 54.9 liter vented enclosure tuned to 25.9 Hz, reaching an F3 cutoff of approximately 25.9 Hz.
Can PURIFI PTT8.0X08-NAB-01 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 24.2 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 48.6 Hz.
What port dimensions should be used for PURIFI PTT8.0X08-NAB-01 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 6.8 cm with a length of 24.7 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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