Vented Specialist

BMS Speakers 15N830v²

Best box: 55.7 L bass reflex tuned to 50.5 Hz · F3 53.9 Hz

Predicted SPL response of the BMS Speakers 15N830v² in the recommended 55.7 L bass reflex box versus the alternative — open it in the simulator Open and tweak this box live ↗

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Recommended Bass Reflex (Vented)

PORT BUILDABLE
Net Box Volume (Vb) 55.7 Liters
Tuning Frequency (Fb) 50.5 Hz
F3 (-3 dB Cutoff) 53.9 Hz
F6 / F10 Extension 46.9 Hz / 40.6 Hz
Port Inner Diameter Ø 15.0 cm
Port Physical Length 26.6 cm
First Pipe Resonance 647.0 Hz
Estimated MOL @ F3 132.7 dB SPL
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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING
Net Box Volume (Vb) 27.1 Liters
System Q (Qtc) 0.707 (Butterworth)
System Resonance (Fc) 92.3 Hz
F3 (-3 dB Cutoff) 92.0 Hz
F6 / F10 Extension 69.4 Hz / 52.2 Hz
Air Spring Linearity High (Zero port compression)
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Thiele/Small Parameters

Resonance (Fs) 37.0 Hz
Total Q (Qts) 0.27
Electrical Q (Qes) 0.289
Mechanical Q (Qms) 4.2
Equivalent Volume (Vas) 159.0 Liters
Diaphragm Area (Sd) 880.0 cm²
DC Resistance (Re) 4.8 Ω
Efficiency Bandwidth Product (EBP) 128.2
Linear Excursion (Xmax) 8.0 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 BMS Speakers 15N830v²?

Load Forge's calculated alignment puts BMS Speakers 15N830v² in a 55.7 liter vented enclosure tuned to 50.5 Hz, reaching an F3 cutoff of approximately 53.9 Hz.

Can BMS Speakers 15N830v² be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 27.1 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 92.0 Hz.

What port dimensions should be used for BMS Speakers 15N830v² to avoid port chuffing?

Sized from cone displacement (Sd × Xmax), a minimum port diameter of 15.0 cm with a length of 26.6 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.

BMS Speakers 15N830v² Enclosure Card
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