Sine Design

Dayton Audio RS180P-8

woofer · EBP 104 → suits a ported box · nominal (full) — Dayton Audio datasheet (https://www.daytonaudio.com/images/resources/295-365--dayton-audio-rs180p-8-spec-sheet.pdf)

Thiele/Small parameters

Fs (resonance)45.8 Hz
Qts0.34
Qes / Qms0.44 / 1.49
Vas22.0 L
Re / nominal Z6.3 Ω / 8 Ω
Xmax6.0 mm
Sensitivity88.6 dB (1 W/1 m, calc); 89.8 dB (2.83 V/1 m, mfr)
Power handling60 W

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

Sealed (Qtc 0.707) — Vb6.6 L
Sealed — Fc / F395.2 / 95.3 Hz
Ported (suggested) — Vb12.5 L
Ported — Fb / F354.6 / 57.5 Hz
Open in designer →Use my measured parameters →Buy at Parts Express →

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About this driver

The Dayton Audio RS180P-8 is a 6.5″ woofer with a free-air resonance of 45.8 Hz and a total Q (Qts) of 0.34. Its efficiency-bandwidth product (EBP) of 104 points toward a ported alignment. In a 6.6 L sealed box it reaches an F3 of 95.3 Hz (Qtc 0.707); a suggested 12.5 L box tuned to 54.6 Hz extends to about 57.5 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Dayton Audio RS180P-8 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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