Seas FA22RCZ
fullrange · EBP 79 → suits either box · nominal (full) — Seas datasheet (https://www.seas.no/images/stories/prestige/pdfdatasheet/H1597-08_FA22RCZ_Datasheet.pdf)
Thiele/Small parameters
| Fs (resonance) | 30 Hz |
| Qts | 0.35 |
| Qes / Qms | 0.38 / 4.36 |
| Vas | 134.0 L |
| Re / nominal Z | 5.7 Ω / 8 Ω |
| Xmax | — |
| Sensitivity | 91.6 dB (1 W/1 m, calc); 94 dB (2.83 V/1 m, mfr) |
| Power handling | 40 W |
Published (nominal) values, params full — verify by measurement (DATS/REW) before building.
Datasheet (PDF) ↗ — manufacturer-hosted
Recommended enclosures
| Sealed (Qtc 0.707) — Vb | 43.5 L |
| Sealed — Fc / F3 | 60.6 / 60.6 Hz |
| Ported (suggested) — Vb | 83.9 L |
| Ported — Fb / F3 | 34.7 / 36.1 Hz |
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About this driver
The Seas FA22RCZ is a 8.5″ fullrange with a free-air resonance of 30 Hz and a total Q (Qts) of 0.35. Its efficiency-bandwidth product (EBP) of 79 points toward either alignment. In a 43.5 L sealed box it reaches an F3 of 60.6 Hz (Qtc 0.707); a suggested 83.9 L box tuned to 34.7 Hz extends to about 36.1 Hz. See the sealed vs ported guide for how to choose.
Recommended partners
modeled estimateThe tweeters below pair well with the Seas FA22RCZ 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.
- Seas M64F001Good match· 86/100
Suggested crossover 980 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Tang Band W8-2314Good match· 85/100
Suggested crossover 980 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Eminence ALPHA-4-4Good match· 84/100
Suggested crossover 980 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Eminence ALPHA-4-8Good match· 84/100
Suggested crossover 980 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Visaton BG13P-8Good match· 84/100
Suggested crossover 980 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Visaton FR10HM-8Good match· 84/100
Suggested crossover 980 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.