Sealed Specialist

Adire Audio Tempest 15″

Best box: 442.9 L bass reflex tuned to 16.3 Hz · F3 15.0 Hz

Predicted SPL response of the Adire Audio Tempest 15″ in the recommended 442.9 L bass reflex box versus the alternative — open it in the simulator Open and tweak this box live ↗

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⚠️ Engineering Notice for Builders

  • Large enclosure volume (442.9 L) requires extensive internal matrix bracing to prevent panel resonance.

Recommended Bass Reflex (Vented)

PORT BUILDABLE
Net Box Volume (Vb) 442.9 Liters
Tuning Frequency (Fb) 16.3 Hz
F3 (-3 dB Cutoff) 15.0 Hz
F6 / F10 Extension 13.5 Hz / 12.1 Hz
Port Inner Diameter Ø 10.0 cm
Port Physical Length 12.9 cm
First Pipe Resonance 1338.0 Hz
Estimated MOL @ F3 111.9 dB SPL
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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING
Net Box Volume (Vb) 198.9 Liters
System Q (Qtc) 0.707 (Butterworth)
System Resonance (Fc) 29.0 Hz
F3 (-3 dB Cutoff) 29.3 Hz
F6 / F10 Extension 22.1 Hz / 16.7 Hz
Air Spring Linearity High (Zero port compression)
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Thiele/Small Parameters

Resonance (Fs) 18.9 Hz
Total Q (Qts) 0.45
Electrical Q (Qes) 0.466
Mechanical Q (Qms) 12.99
Equivalent Volume (Vas) 292.1 Liters
Diaphragm Area (Sd) 823.7 cm²
DC Resistance (Re) 6.6 Ω
Efficiency Bandwidth Product (EBP) 40.5
Linear Excursion (Xmax) 14.0 mm
Thermal Power (Pe) N/A W
Nominal Diameter 15.0"
Catalog Source Load Forge catalog (manufacturer datasheets and retailer listings)

Frequently Asked Questions

What is the recommended ported (bass reflex) box volume for Adire Audio Tempest 15″?

Load Forge's calculated alignment puts Adire Audio Tempest 15″ in a 442.9 liter vented enclosure tuned to 16.3 Hz, reaching an F3 cutoff of approximately 15.0 Hz.

Can Adire Audio Tempest 15″ be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 198.9 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 29.3 Hz.

What port dimensions should be used for Adire Audio Tempest 15″ to avoid port chuffing?

Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 12.9 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.

Shareable Acoustic Card for Forums & Social Media

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.

Adire Audio Tempest 15″ Enclosure Card
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