Sine Design

Seas L12RE-XFC

tweeter · EBP 167 → suits a ported box · nominal (full) — Seas datasheet (https://www.seas.no/images/stories/prestige/pdfdatasheet/H1602_L12RE_XFC_Datasheet--2.pdf)

Thiele/Small parameters

Fs (resonance)55 Hz
Qts0.3
Qes / Qms0.33 / 2.99
Vas3.0 L
Re / nominal Z3.1 Ω / 4 Ω
Xmax—
Sensitivity83.6 dB (1 W/1 m, calc); 86 dB (2.83 V/1 m, mfr)
Power handling80 W

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

This is a tweeter; Thiele/Small box parameters are not used for enclosure design.

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About this driver

The Seas L12RE-XFC is a 4″ tweeter with a free-air resonance of 55 Hz and a total Q (Qts) of 0.3. Its efficiency-bandwidth product (EBP) of 167 points toward a ported alignment. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The woofers and midranges below pair well with the Seas L12RE-XFC 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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