Sine Design

Seas CA22RNX

woofer · EBP 56 → suits either box · nominal (full) — Seas datasheet (https://www.seas.no/images/stories/prestige/pdfdatasheet/h1288_ca22rnx_datasheet.pdf)

Thiele/Small parameters

Fs (resonance)29 Hz
Qts0.41
Qes / Qms0.52 / 2.04
Vas97.0 L
Re / nominal Z— / 8 Ω
Xmax
Sensitivity88.4 dB (1 W/1 m, calc)

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

Sealed (Qtc 0.707) — Vb49.2 L
Sealed — Fc / F350.0 / 50.0 Hz
Ported (suggested) — Vb102.3 L
Ported — Fb / F328.5 / 27.6 Hz

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About this driver

The Seas CA22RNX is a woofer with a free-air resonance of 29 Hz and a total Q (Qts) of 0.41. Its efficiency-bandwidth product (EBP) of 56 points toward either alignment. In a 49.2 L sealed box it reaches an F3 of 50.0 Hz (Qtc 0.707); a suggested 102.3 L box tuned to 28.5 Hz extends to about 27.6 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

These tweeters could pair with the Seas CA22RNX in a two-way design, but the seed Thiele/Small data is too thin to grade the match yet — add or measure T/S (Fs, Sd, Xmax) to compute a real compatibility grade. You can still open a pair in the guided builder.

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

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