Sine Design

Seas W26FX001

woofer · EBP 49 → suits a sealed box · nominal (full) — Seas datasheet (https://www.seas.no/images/stories/excel/pdfdataheet/e0026_w26fx001_datasheet.pdf)

Thiele/Small parameters

Fs (resonance)20 Hz
Qts0.35
Qes / Qms0.41 / 2.34
Vas162.0 L
Re / nominal Z6.3 Ω / 8 Ω
Xmax—
Sensitivity86.8 dB (1 W/1 m, calc); 87 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) — Vb52.6 L
Sealed — Fc / F340.4 / 40.4 Hz
Ported (suggested) — Vb101.4 L
Ported — Fb / F323.1 / 24.0 Hz
Open in designer →Use my measured parameters →Buy at Parts Express →

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About this driver

The Seas W26FX001 is a 10″ woofer with a free-air resonance of 20 Hz and a total Q (Qts) of 0.35. Its efficiency-bandwidth product (EBP) of 49 points toward a sealed alignment. In a 52.6 L sealed box it reaches an F3 of 40.4 Hz (Qtc 0.707); a suggested 101.4 L box tuned to 23.1 Hz extends to about 24.0 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Seas W26FX001 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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