What is the recommended ported (bass reflex) box volume for Dayton Audio PA380-8?

According to electroacoustic alignment calculations, Dayton Audio PA380-8 performs optimally in a 61.3 liter vented enclosure tuned to 43.1 Hz, reaching an F3 cutoff of approximately 46.9 Hz.

Can Dayton Audio PA380-8 be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 29.9 liters with a Qtc of 0.707, the system exhibits an F3 of 80.6 Hz with tight transient response and natural roll-off.

What port dimensions should be used for Dayton Audio PA380-8 to avoid port chuffing?

To keep vent air velocity below turbulence limits at rated power, a minimum port diameter of 10.0 cm with a length of 13.5 cm is recommended.

Reflex Optimized

Dayton Audio PA380-8

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

177.45 EUR

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Recommended Bass Reflex (Vented)

OPTIMIZED EXTENSION

Net Box Volume (Vb)	61.3 Liters
Tuning Frequency (Fb)	43.1 Hz
F3 (-3 dB Cutoff)	46.9 Hz
F6 / F10 Extension	40.5 Hz / 34.9 Hz
Port Inner Diameter	Ø 10.0 cm
Port Physical Length	13.5 cm
First Pipe Resonance	1272.0 Hz
Estimated MOL @ F3	118.1 dB SPL

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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING

Net Box Volume (Vb)	29.9 Liters
System Q (Qtc)	0.707 (Butterworth Q=0.707)
System Resonance (Fc)	79.4 Hz
F3 (-3 dB Cutoff)	80.6 Hz
F6 / F10 Extension	60.6 Hz / 45.6 Hz
Air Spring Linearity	High (Zero port compression)

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Verified Thiele/Small Parameters

Resonance (Fs)	31.6 Hz
Total Q (Qts)	0.27
Electrical Q (Qes)	0.276
Mechanical Q (Qms)	12.2

Equivalent Volume (Vas)	175.0 Liters
Diaphragm Area (Sd)	845.0 cm²
DC Resistance (Re)	6.3 Ω
Efficiency Bandwidth Product (EBP)	114.4

Linear Excursion (Xmax)	5.0 mm
Thermal Power (Pe)	500.0 W
Nominal Diameter	15.0"
Catalog Source	Manufacturer Official Datasheet

Shareable Acoustic Card for Forums & Social Media

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[url=https://loadforge.io/drivers/dayton-audio-pa380-8][img]https://loadforge.io/api/v1/card/dayton-audio-pa380-8.svg[/img][/url]
[b]Dayton Audio PA380-8[/b] — 61.3L Bass Reflex tuned to 43.1Hz (F3: 46.9Hz). Designed with [url=https://loadforge.io]Load Forge[/url].

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