Seas CA26RE4X
subwoofer · EBP 83 → suits either box · nominal (full) — Seas datasheet (https://www.seas.no/images/stories/prestige/pdfdatasheet/h1316_ca26re4x_datasheet.pdf)
Thiele/Small parameters
| Fs (resonance) | 25 Hz |
| Qts | 0.28 |
| Qes / Qms | 0.3 / 3.99 |
| Vas | 164.0 L |
| Re / nominal Z | 6.1 Ω / 8 Ω |
| Xmax | — |
| Sensitivity | 91.1 dB (1 W/1 m, calc); 91 dB (2.83 V/1 m, mfr) |
| Power handling | 80 W |
Published (nominal) values, params full — verify by measurement (DATS/REW) before building.
Datasheet (PDF) ↗ — manufacturer-hosted
Recommended enclosures
| Sealed (Qtc 0.707) — Vb | 30.5 L |
| Sealed — Fc / F3 | 63.1 / 63.1 Hz |
| Ported (suggested) — Vb | 49.1 L |
| Ported — Fb / F3 | 36.3 / 42.0 Hz |
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About this driver
The Seas CA26RE4X is a 10.5″ subwoofer with a free-air resonance of 25 Hz and a total Q (Qts) of 0.28. Its efficiency-bandwidth product (EBP) of 83 points toward either alignment. In a 30.5 L sealed box it reaches an F3 of 63.1 Hz (Qtc 0.707); a suggested 49.1 L box tuned to 36.3 Hz extends to about 42.0 Hz. See the sealed vs ported guide for how to choose.
Recommended partners
modeled estimateThe tweeters below pair well with the Seas CA26RE4X 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.
- Tang Band W8-2314Good match· 92/100
Suggested crossover 780 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Tang Band 75-1558SHGood match· 89/100
Suggested crossover 780 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Seas M64F001Good match· 87/100
Suggested crossover 780 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Seas MR18REX-XFGood match· 86/100
Suggested crossover 780 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Eminence ALPHA-4-4Good match· 84/100
Suggested crossover 780 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Eminence ALPHA-4-8Good match· 84/100
Suggested crossover 780 Hz (4th-order, Linkwitz-Riley)
Build this pair →
Modeled estimate from T/S + geometry — no measurements. The verdict is robust; it improves with measured FRD/ZMA data.