Sine Design

Seas 27TBFC/G H1212-06

tweeter · nominal (headline) — Seas 27TBFC/G H1212 datasheet (manufacturer)

Thiele/Small parameters

Fs (resonance)550 Hz
Qts—
Qes / Qms— / —
Vas—
Re / nominal Z4.8 Ω / 6 Ω
Xmax0.3 mm
Sensitivity91.5 dB (2.83 V/1 m, mfr)
Power handling90 W

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

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 27TBFC/G H1212-06 is a tweeter with a free-air resonance of 550 Hz. See the sealed vs ported guide for how to choose.

NOMINAL/manufacturer. Fs 550 Hz; recommended crossover >=1500 Hz; rec. range 1500-20000 Hz. Xmax 0.25 mm (linear coil travel p-p 0.5 mm). Power: long-term 90 W (short-term 220 W). Qms/Qes/Qts/Vas not on datasheet (not needed for box/match). Power-handling test HP Butterworth 2500 Hz 12 dB/oct.

Recommended partners

modeled estimate

The woofers and midranges below pair well with the Seas 27TBFC/G H1212-06 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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