Sine Design

Tang Band W8-1722B

woofer · EBP 60 → suits either box · nominal (full) — Tang Band datasheet (https://www.tb-speaker.com/uploads/files/f09e6e5e11f34d34575e1905f710bfe6.pdf)

Thiele/Small parameters

Fs (resonance)35 Hz
Qts0.51
Qes / Qms0.58 / 3.92
Vas46.3 L
Re / nominal Z3.6 Ω / 4 Ω
Xmax9.0 mm
Sensitivity87.2 dB (1 W/1 m, calc); 88 dB (2.83 V/1 m, mfr)
Power handling60 W

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

Sealed (Qtc 0.707) — Vb50.2 L
Sealed — Fc / F348.5 / 48.5 Hz
Ported (suggested) — Vb100.4 L
Ported — Fb / F327.5 / 24.5 Hz
Open in designer →Use my measured parameters →Buy at Parts Express →

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About this driver

The Tang Band W8-1722B is a 8″ woofer with a free-air resonance of 35 Hz and a total Q (Qts) of 0.51. Its efficiency-bandwidth product (EBP) of 60 points toward either alignment. In a 50.2 L sealed box it reaches an F3 of 48.5 Hz (Qtc 0.707); a suggested 100.4 L box tuned to 27.5 Hz extends to about 24.5 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Tang Band W8-1722B 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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