What is the recommended ported (bass reflex) box volume for Dayton Audio PA165-8?

According to electroacoustic alignment calculations, Dayton Audio PA165-8 performs optimally in a 13.8 liter vented enclosure tuned to 67.0 Hz, reaching an F3 cutoff of approximately 61.5 Hz.

Can Dayton Audio PA165-8 be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 7.3 liters with a Qtc of 0.707, the system exhibits an F3 of 111.3 Hz with tight transient response and natural roll-off.

What port dimensions should be used for Dayton Audio PA165-8 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 5.9 cm is recommended.

Reflex Optimized

Dayton Audio PA165-8

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

39.95 EUR

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Recommended Bass Reflex (Vented)

OPTIMIZED EXTENSION

Net Box Volume (Vb)	13.8 Liters
Tuning Frequency (Fb)	67.0 Hz
F3 (-3 dB Cutoff)	61.5 Hz
F6 / F10 Extension	55.5 Hz / 49.7 Hz
Port Inner Diameter	Ø 5.0 cm
Port Physical Length	5.9 cm
First Pipe Resonance	2903.0 Hz
Estimated MOL @ F3	106.0 dB SPL

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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING

Net Box Volume (Vb)	7.3 Liters
System Q (Qtc)	0.707 (Butterworth Q=0.707)
System Resonance (Fc)	117.3 Hz
F3 (-3 dB Cutoff)	111.3 Hz
F6 / F10 Extension	85.2 Hz / 64.6 Hz
Air Spring Linearity	High (Zero port compression)

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Verified Thiele/Small Parameters

Resonance (Fs)	80.8 Hz
Total Q (Qts)	0.47
Electrical Q (Qes)	0.598
Mechanical Q (Qms)	2.19

Equivalent Volume (Vas)	9.2 Liters
Diaphragm Area (Sd)	120.8 cm²
DC Resistance (Re)	5.15 Ω
Efficiency Bandwidth Product (EBP)	135.0

Linear Excursion (Xmax)	N/A mm
Thermal Power (Pe)	75.0 W
Nominal Diameter	6.0"
Catalog Source	Manufacturer Official Datasheet

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[b]Dayton Audio PA165-8[/b] — 13.8L Bass Reflex tuned to 67.0Hz (F3: 61.5Hz). Designed with [url=https://loadforge.io]Load Forge[/url].

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