Sine Design

Tang Band W2-1625SA

subwoofer · EBP 273 → suits a ported box · nominal (full) — Tang Band datasheet (https://www.tb-speaker.com/uploads/files/1d00dfe5f7072bc4fb470c489217addd.pdf)

Thiele/Small parameters

Fs (resonance)90 Hz
Qts0.31
Qes / Qms0.33 / 3.94
Vas0.3 L
Re / nominal Z6.6 Ω / 8 Ω
Xmax2.0 mm
Sensitivity80.2 dB (1 W/1 m, calc); 80 dB (2.83 V/1 m, mfr)
Power handling20 W

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

Sealed (Qtc 0.707) — Vb0.1 L
Sealed — Fc / F3205.3 / 205.3 Hz
Ported (suggested) — Vb0.1 L
Ported — Fb / F3117.8 / 129.6 Hz
Open in designer →Use my measured parameters →Buy at Parts Express →

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About this driver

The Tang Band W2-1625SA is a 2″ subwoofer with a free-air resonance of 90 Hz and a total Q (Qts) of 0.31. Its efficiency-bandwidth product (EBP) of 273 points toward a ported alignment. In a 0.1 L sealed box it reaches an F3 of 205.3 Hz (Qtc 0.707); a suggested 0.1 L box tuned to 117.8 Hz extends to about 129.6 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Tang Band W2-1625SA 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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