Seas W18E001
midrange · EBP 69 → suits either box · nominal (full) — Seas datasheet (https://www.seas.no/images/stories/excel/pdfdataheet/e0018_w18e001_datasheet.pdf)
Thiele/Small parameters
| Fs (resonance) | 34 Hz |
| Qts | 0.42 |
| Qes / Qms | 0.49 / 2.91 |
| Vas | 30.0 L |
| Re / nominal Z | 6.1 Ω / 8 Ω |
| Xmax | — |
| Sensitivity | 85.6 dB (1 W/1 m, calc); 86 dB (2.83 V/1 m, mfr) |
| Power handling | 100 W |
Published (nominal) values, params full — verify by measurement (DATS/REW) before building.
Datasheet (PDF) ↗ — manufacturer-hosted
Recommended enclosures
This is a midrange; Thiele/Small box parameters are not used for enclosure design.
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About this driver
The Seas W18E001 is a 6″ midrange with a free-air resonance of 34 Hz and a total Q (Qts) of 0.42. Its efficiency-bandwidth product (EBP) of 69 points toward either alignment. See the sealed vs ported guide for how to choose.
Recommended partners
modeled estimateThe tweeters below pair well with the Seas W18E001 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 C18EN002-AGood match· 91/100
Suggested crossover 1.30 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Seas L12RE-XFCGood match· 91/100
Suggested crossover 1.30 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Seas M64F001Good match· 91/100
Suggested crossover 1.30 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Seas MR18REX-XFGood match· 91/100
Suggested crossover 1.30 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Seas T18REX-XFCGood match· 91/100
Suggested crossover 1.30 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Seas T25CF002Good match· 91/100
Suggested crossover 1.30 kHz (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.