Tang Band W4-657D
fullrange · nominal (partial) — Tang Band datasheet (https://www.tb-speaker.com/uploads/files/5940fa72982b282e163b04fb73b53202.pdf)
Thiele/Small parameters
| Fs (resonance) | 70 Hz |
| Qts | 0.32 |
| Qes / Qms | — / 3.64 |
| Vas | 5.6 L |
| Re / nominal Z | 6 Ω / 8 Ω |
| Xmax | 3.3 mm |
| Sensitivity | 89 dB (2.83 V/1 m, mfr) |
| Power handling | 25 W |
Published (nominal) values, params partial — verify by measurement (DATS/REW) before building.
Datasheet (PDF) ↗ — manufacturer-hosted
Recommended enclosures
T/S are partial — fetch the datasheet for the full parameters to model a box.
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About this driver
The Tang Band W4-657D is a 4″ fullrange with a free-air resonance of 70 Hz and a total Q (Qts) of 0.32. See the sealed vs ported guide for how to choose.
Recommended partners
modeled estimateThe tweeters below pair well with the Tang Band W4-657D 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 27TBFC/G H1212-06Good match· 92/100
Suggested crossover 1.93 kHz (4th-order, Linkwitz-Riley)
Build this pair → - SB Acoustics SB29RDC-C000-4Good match· 92/100
Suggested crossover 1.93 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Dayton Audio EC30-4Good match· 92/100
Suggested crossover 1.93 kHz (4th-order, Linkwitz-Riley)
Build this pair → - SB Acoustics SATORI TW29BGood match· 92/100
Suggested crossover 1.93 kHz (4th-order, Linkwitz-Riley)
Build this pair → - SB Acoustics SATORI TW29B-BGood match· 92/100
Suggested crossover 1.93 kHz (4th-order, Linkwitz-Riley)
Build this pair → - SB Acoustics SATORI TW29BNGood match· 92/100
Suggested crossover 1.93 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.