What is the recommended ported (bass reflex) box volume for Beyma LOUDSPEAKER 15"WR400 8 OH?

According to electroacoustic alignment calculations, Beyma LOUDSPEAKER 15"WR400 8 OH performs optimally in a 111.8 liter vented enclosure tuned to 44.7 Hz, reaching an F3 cutoff of approximately 45.3 Hz.

Can Beyma LOUDSPEAKER 15"WR400 8 OH be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 51.8 liters with a Qtc of 0.707, the system exhibits an F3 of 79.0 Hz with tight transient response and natural roll-off.

What port dimensions should be used for Beyma LOUDSPEAKER 15"WR400 8 OH to avoid port chuffing?

To keep vent air velocity below turbulence limits at rated power, a minimum port diameter of 12.5 cm with a length of 7.5 cm is recommended.

Reflex Optimized

Beyma LOUDSPEAKER 15"WR400 8 OH

Complete Thiele/Small parameters, optimized ported (bass reflex) and sealed enclosure designs, F3/F6/F10 cutoffs, and vent turbulence analysis calculated by Load Forge.

Estimated Retail

165.43 GBP

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Recommended Bass Reflex (Vented)

OPTIMIZED EXTENSION

Net Box Volume (Vb)	111.8 Liters
Tuning Frequency (Fb)	44.7 Hz
F3 (-3 dB Cutoff)	45.3 Hz
F6 / F10 Extension	40.8 Hz / 36.0 Hz
Port Inner Diameter	Ø 12.5 cm
Port Physical Length	7.5 cm
First Pipe Resonance	2284.0 Hz
Estimated MOL @ F3	119.2 dB SPL

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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING

Net Box Volume (Vb)	51.8 Liters
System Q (Qtc)	0.707 (Butterworth Q=0.707)
System Resonance (Fc)	79.3 Hz
F3 (-3 dB Cutoff)	79.0 Hz
F6 / F10 Extension	57.4 Hz / 42.2 Hz
Air Spring Linearity	High (Zero port compression)

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Verified Thiele/Small Parameters

Resonance (Fs)	36.0 Hz
Total Q (Qts)	0.3
Electrical Q (Qes)	0.311
Mechanical Q (Qms)	8.2

Equivalent Volume (Vas)	236.0 Liters
Diaphragm Area (Sd)	880.0 cm²
DC Resistance (Re)	5.6 Ω
Efficiency Bandwidth Product (EBP)	115.6

Linear Excursion (Xmax)	6.3 mm
Thermal Power (Pe)	400.0 W
Nominal Diameter	15.0"
Catalog Source	Manufacturer Official Datasheet

Shareable Acoustic Card for Forums & Social Media

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Beyma LOUDSPEAKER 15"WR400 8 OH Enclosure Card

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[b]Beyma LOUDSPEAKER 15"WR400 8 OH[/b] — 111.8L Bass Reflex tuned to 44.7Hz (F3: 45.3Hz). Designed with [url=https://loadforge.io]Load Forge[/url].

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