What is the recommended ported (bass reflex) box volume for Beyma LOUDSPEAKER 6"MI100 8 OH?

According to electroacoustic alignment calculations, Beyma LOUDSPEAKER 6"MI100 8 OH performs optimally in a 4.7 liter vented enclosure tuned to 98.5 Hz, reaching an F3 cutoff of approximately 99.0 Hz.

Can Beyma LOUDSPEAKER 6"MI100 8 OH be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 3.4 liters with a Qtc of 0.707, the system exhibits an F3 of 123.9 Hz with tight transient response and natural roll-off.

What port dimensions should be used for Beyma LOUDSPEAKER 6"MI100 8 OH to avoid port chuffing?

To keep vent air velocity below turbulence limits at rated power, a minimum port diameter of 5.0 cm with a length of 9.3 cm is recommended.

Reflex Optimized

Beyma LOUDSPEAKER 6"MI100 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

67.06 GBP

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⚠️ Engineering Notice for Builders

Limited linear excursion (Xmax: 3.0 mm); set a high-pass subsonic filter at 25–30 Hz when driven with high power.

Recommended Bass Reflex (Vented)

OPTIMIZED EXTENSION

Net Box Volume (Vb)	4.7 Liters
Tuning Frequency (Fb)	98.5 Hz
F3 (-3 dB Cutoff)	99.0 Hz
F6 / F10 Extension	89.6 Hz / 79.4 Hz
Port Inner Diameter	Ø 5.0 cm
Port Physical Length	9.3 cm
First Pipe Resonance	1843.0 Hz
Estimated MOL @ F3	113.4 dB SPL

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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING

Net Box Volume (Vb)	3.4 Liters
System Q (Qtc)	0.707 (Butterworth Q=0.707)
System Resonance (Fc)	172.3 Hz
F3 (-3 dB Cutoff)	123.9 Hz
F6 / F10 Extension	90.7 Hz / 65.3 Hz
Air Spring Linearity	High (Zero port compression)

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Verified Thiele/Small Parameters

Resonance (Fs)	128.0 Hz
Total Q (Qts)	0.51
Electrical Q (Qes)	0.542
Mechanical Q (Qms)	8.6

Equivalent Volume (Vas)	3.1 Liters
Diaphragm Area (Sd)	140.0 cm²
DC Resistance (Re)	6.0 Ω
Efficiency Bandwidth Product (EBP)	236.1

Linear Excursion (Xmax)	3.0 mm
Thermal Power (Pe)	250.0 W
Nominal Diameter	6.0"
Catalog Source	Manufacturer Official Datasheet

Shareable Acoustic Card for Forums & Social Media

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Beyma LOUDSPEAKER 6"MI100 8 OH Enclosure Card

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[url=https://loadforge.io/drivers/beyma-loudspeaker-6inmi100-8-oh][img]https://loadforge.io/api/v1/card/beyma-loudspeaker-6inmi100-8-oh.svg[/img][/url]
[b]Beyma LOUDSPEAKER 6"MI100 8 OH[/b] — 4.7L Bass Reflex tuned to 98.5Hz (F3: 99.0Hz). Designed with [url=https://loadforge.io]Load Forge[/url].

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