Sine Design

Eminence LEGEND-B810

woofer · EBP 76 → suits either box · nominal (full) — Eminence datasheet (https://cdn.shopify.com/s/files/1/0270/8665/1462/files/Legend_B810.pdf)

Thiele/Small parameters

Fs (resonance)52 Hz
Qts0.65
Qes / Qms0.68 / 13.91
Vas66.3 L
Re / nominal Z27.5 Ω / 32 Ω
Xmax4.7 mm
Sensitivity93.2 dB (1 W/1 m, calc); 92.7 dB (2.83 V/1 m, mfr)
Power handling150 W

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

Sealed (Qtc 0.707) — Vb361.9 L
Sealed — Fc / F356.6 / 56.6 Hz
Ported (suggested) — Vb319.8 L
Ported — Fb / F331.9 / 27.6 Hz
Open in designer →Use my measured parameters →Buy at Parts Express →

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About this driver

The Eminence LEGEND-B810 is a 10.5″ woofer with a free-air resonance of 52 Hz and a total Q (Qts) of 0.65. Its efficiency-bandwidth product (EBP) of 76 points toward either alignment. In a 361.9 L sealed box it reaches an F3 of 56.6 Hz (Qtc 0.707); a suggested 319.8 L box tuned to 31.9 Hz extends to about 27.6 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Eminence LEGEND-B810 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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