Timpano Audio TPT-MD12 12" Midrange Speaker
Best box: 158.9 L bass reflex tuned to 36.5 Hz · F3 36.0 Hz
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Comparable 12.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Timpano Audio TPT-MD12 12" Midrange Speaker 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
- Xmax is not published, so the port size is an empirical estimate (area ≥ 12 in² per ft³ of net volume, minimum by driver size), not a displacement calculation. Check air velocity in Load Forge Studio.
- Large enclosure volume (158.9 L) requires extensive internal matrix bracing to prevent panel resonance.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 158.9 Liters |
| Tuning Frequency (Fb) | 36.5 Hz |
| F3 (-3 dB Cutoff) | 36.0 Hz |
| F6 / F10 Extension | 31.0 Hz / 27.3 Hz |
| Port Inner Diameter ESTIMATED | Ø 23.5 cm |
| Port Physical Length | 44.6 cm |
| First Pipe Resonance | 386.0 Hz |
| Estimated MOL @ F3 | 117.5 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 124.8 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 61.1 Hz |
| F3 (-3 dB Cutoff) | 62.4 Hz |
| F6 / F10 Extension | 47.0 Hz / 35.4 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 48.2 Hz |
| Total Q (Qts) | 0.52 |
| Electrical Q (Qes) | 0.539 |
| Mechanical Q (Qms) | 14.6 |
| Equivalent Volume (Vas) | 105.9 Liters |
| Diaphragm Area (Sd) | 552.0 cm² |
| DC Resistance (Re) | 6.2 Ω |
| Efficiency Bandwidth Product (EBP) | 89.4 |
| Linear Excursion (Xmax) | N/A mm |
| Thermal Power (Pe) | 375.0 W |
| Nominal Diameter | 12.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Timpano Audio TPT-MD12 12" Midrange Speaker?
Load Forge's calculated alignment puts Timpano Audio TPT-MD12 12" Midrange Speaker in a 158.9 liter vented enclosure tuned to 36.5 Hz, reaching an F3 cutoff of approximately 36.0 Hz.
Can Timpano Audio TPT-MD12 12" Midrange Speaker be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 124.8 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 62.4 Hz.
What port dimensions should be used for Timpano Audio TPT-MD12 12" Midrange Speaker to avoid port chuffing?
Xmax is not published for Timpano Audio TPT-MD12 12" Midrange Speaker, so the port is an empirical estimate: a 23.5 cm diameter with a length of 44.6 cm (area at least 12 in² per ft³ of net volume). Check the air velocity at your power level in Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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