What is the recommended ported (bass reflex) box volume for Dayton Audio CE45N-4?

According to electroacoustic alignment calculations, Dayton Audio CE45N-4 performs optimally in a 1.5 liter vented enclosure tuned to 151.3 Hz, reaching an F3 cutoff of approximately 141.0 Hz.

Can Dayton Audio CE45N-4 be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 0.3 liters with a Qtc of 0.995, the system exhibits an F3 of 156.0 Hz with tight transient response and natural roll-off.

What port dimensions should be used for Dayton Audio CE45N-4 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 13.6 cm is recommended.

Reflex Optimized

Dayton Audio CE45N-4

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

7.45 EUR

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⚠️ Engineering Notice for Builders

Limited linear excursion (Xmax: 1.1 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)	1.5 Liters
Tuning Frequency (Fb)	151.3 Hz
F3 (-3 dB Cutoff)	141.0 Hz
F6 / F10 Extension	134.8 Hz / 127.0 Hz
Port Inner Diameter	Ø 5.0 cm
Port Physical Length	13.6 cm
First Pipe Resonance	1268.0 Hz
Estimated MOL @ F3	90.2 dB SPL

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Recommended Sealed (Acoustic Suspension)

MAX TRANSIENT DAMPING

Net Box Volume (Vb)	0.3 Liters
System Q (Qtc)	0.995 (Butterworth Q=0.707)
System Resonance (Fc)	197.7 Hz
F3 (-3 dB Cutoff)	156.0 Hz
F6 / F10 Extension	130.4 Hz / 104.8 Hz
Air Spring Linearity	High (Zero port compression)

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Verified Thiele/Small Parameters

Resonance (Fs)	178.0 Hz
Total Q (Qts)	0.89
Electrical Q (Qes)	1.127
Mechanical Q (Qms)	4.23

Equivalent Volume (Vas)	0.1 Liters
Diaphragm Area (Sd)	8.0 cm²
DC Resistance (Re)	3.68 Ω
Efficiency Bandwidth Product (EBP)	157.9

Linear Excursion (Xmax)	1.1 mm
Thermal Power (Pe)	5.0 W
Nominal Diameter	1.75"
Catalog Source	Manufacturer Official Datasheet

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[url=https://loadforge.io/drivers/dayton-audio-ce45n-4][img]https://loadforge.io/api/v1/card/dayton-audio-ce45n-4.svg[/img][/url]
[b]Dayton Audio CE45N-4[/b] — 1.5L Bass Reflex tuned to 151.3Hz (F3: 141.0Hz). Designed with [url=https://loadforge.io]Load Forge[/url].

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