Sine Design

Dayton Audio RSS390HF-4

subwoofer · EBP 39 → suits a sealed box · nominal (full) — Dayton Audio datasheet (https://www.daytonaudio.com/images/resources/295-468-dayton-audio-rss390hf-4-specifications-46176.pdf)

Thiele/Small parameters

Fs (resonance)19.5 Hz
Qts0.43
Qes / Qms0.5 / 3.02
Vas212.0 L
Re / nominal Z3 Ω / 4 Ω
Xmax14.0 mm
Sensitivity86.8 dB (1 W/1 m, calc); 91.2 dB (2.83 V/1 m, mfr)
Power handling500 W

Published (nominal) values, params full — verify by measurement (DATS/REW) before building.

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

Sealed (Qtc 0.707) — Vb124.5 L
Sealed — Fc / F332.1 / 32.1 Hz
Ported (suggested) — Vb261.7 L
Ported — Fb / F318.3 / 20.0 Hz
Open in designer →Use my measured parameters →Buy at Parts Express →

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About this driver

The Dayton Audio RSS390HF-4 is a 16″ subwoofer with a free-air resonance of 19.5 Hz and a total Q (Qts) of 0.43. Its efficiency-bandwidth product (EBP) of 39 points toward a sealed alignment. In a 124.5 L sealed box it reaches an F3 of 32.1 Hz (Qtc 0.707); a suggested 261.7 L box tuned to 18.3 Hz extends to about 20.0 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Dayton Audio RSS390HF-4 in a two-way design — each grade is a modeled estimate of the crossover match, with a suggested crossover point. Open any pair in the guided builder to design the crossover and total the parts.

Modeled estimate from T/S + geometry — no measurements. The verdict is robust; it improves with measured FRD/ZMA data.

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