Versatile Load

Ciare 15.00SW (4Ω)

Best box: 131.2 L bass reflex tuned to 27.2 Hz · F3 26.0 Hz

Predicted SPL response of the Ciare 15.00SW (4Ω) in the recommended 131.2 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 (131.2 L) requires extensive internal matrix bracing to prevent panel resonance.

Recommended Bass Reflex (Vented)

PORT BUILDABLE
Net Box Volume (Vb) 131.2 Liters
Tuning Frequency (Fb) 27.2 Hz
F3 (-3 dB Cutoff) 26.0 Hz
F6 / F10 Extension 23.2 Hz / 20.6 Hz
Port Inner Diameter Ø 12.5 cm
Port Physical Length 29.0 cm
First Pipe Resonance 594.0 Hz
Estimated MOL @ F3 116.7 dB SPL
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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING
Net Box Volume (Vb) 57.3 Liters
System Q (Qtc) 0.707 (Butterworth)
System Resonance (Fc) 48.8 Hz
F3 (-3 dB Cutoff) 51.1 Hz
F6 / F10 Extension 38.2 Hz / 28.7 Hz
Air Spring Linearity High (Zero port compression)
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Thiele/Small Parameters

Resonance (Fs) 29.0 Hz
Total Q (Qts) 0.41
Electrical Q (Qes) 0.444
Mechanical Q (Qms) 5.4
Equivalent Volume (Vas) 113.0 Liters
Diaphragm Area (Sd) 780.0 cm²
DC Resistance (Re) 3.6 Ω
Efficiency Bandwidth Product (EBP) 65.4
Linear Excursion (Xmax) 13.5 mm
Thermal Power (Pe) 1000.0 W
Nominal Diameter 14.0"
Catalog Source Load Forge catalog (manufacturer datasheets and retailer listings)

Frequently Asked Questions

What is the recommended ported (bass reflex) box volume for Ciare 15.00SW (4Ω)?

Load Forge's calculated alignment puts Ciare 15.00SW (4Ω) in a 131.2 liter vented enclosure tuned to 27.2 Hz, reaching an F3 cutoff of approximately 26.0 Hz.

Can Ciare 15.00SW (4Ω) be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 57.3 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 51.1 Hz.

What port dimensions should be used for Ciare 15.00SW (4Ω) to avoid port chuffing?

Sized from cone displacement (Sd × Xmax), a minimum port diameter of 12.5 cm with a length of 29.0 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.

Ciare 15.00SW (4Ω) Enclosure Card
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