Tang Band W8-670Q
subwoofer · EBP 75 → suits either box · nominal (full) — Tang Band datasheet (https://www.tb-speaker.com/uploads/files/df7ed6f48a0049f2d58825be8ede187f.pdf)
Thiele/Small parameters
| Fs (resonance) | 38 Hz |
| Qts | 0.46 |
| Qes / Qms | 0.51 / 5.35 |
| Vas | 24.9 L |
| Re / nominal Z | 6.5 Ω / — |
| Xmax | 7.0 mm |
| Sensitivity | 86 dB (2.83 V/1 m, mfr) |
| Power handling | 70 W |
Published (nominal) values, params full — verify by measurement (DATS/REW) before building.
Datasheet (PDF) ↗ — manufacturer-hosted
Recommended enclosures
T/S are full — fetch the datasheet for the full parameters to model a box.
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About this driver
The Tang Band W8-670Q is a 8″ subwoofer with a free-air resonance of 38 Hz and a total Q (Qts) of 0.46. Its efficiency-bandwidth product (EBP) of 75 points toward either alignment. See the sealed vs ported guide for how to choose.
Recommended partners
modeled estimateThe tweeters below pair well with the Tang Band W8-670Q 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 C18EN002-AGood match· 92/100
Suggested crossover 984 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Seas L12RE-XFCGood match· 92/100
Suggested crossover 984 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Seas M64F001Good match· 92/100
Suggested crossover 984 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Seas MR18REX-XFGood match· 92/100
Suggested crossover 984 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Seas T18REX-XFCGood match· 92/100
Suggested crossover 984 Hz (4th-order, Linkwitz-Riley)
Build this pair → - Tang Band 75-1558SHGood match· 92/100
Suggested crossover 984 Hz (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.