Sine Design

Dayton Audio DCS205-4

subwoofer · EBP 81 → suits either box · nominal (full) — Dayton Audio datasheet (https://www.daytonaudio.com/images/resources/295-200-dayton-audio-dcs205-4-specifications-46584.pdf)

Thiele/Small parameters

Fs (resonance)32.3 Hz
Qts0.37
Qes / Qms0.4 / 6.28
Vas27.0 L
Re / nominal Z3.9 Ω / 4 Ω
Xmax8.8 mm
Sensitivity85.4 dB (1 W/1 m, calc); 88.6 dB (2.83 V/1 m, mfr)
Power handling150 W

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

Sealed (Qtc 0.707) — Vb10.2 L
Sealed — Fc / F361.7 / 61.7 Hz
Ported (suggested) — Vb20.3 L
Ported — Fb / F335.3 / 35.8 Hz
Open in designer →Use my measured parameters →Buy at Parts Express →

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About this driver

The Dayton Audio DCS205-4 is a 8″ subwoofer with a free-air resonance of 32.3 Hz and a total Q (Qts) of 0.37. Its efficiency-bandwidth product (EBP) of 81 points toward either alignment. In a 10.2 L sealed box it reaches an F3 of 61.7 Hz (Qtc 0.707); a suggested 20.3 L box tuned to 35.3 Hz extends to about 35.8 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Dayton Audio DCS205-4 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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