Sine Design

Eminence BETA-10A

woofer · EBP 102 → suits a ported box · nominal (full) — Eminence datasheet (https://cdn.shopify.com/s/files/1/0270/8665/1462/files/Beta_10A.pdf)

Thiele/Small parameters

Fs (resonance)53 Hz
Qts0.49
Qes / Qms0.52 / 8.14
Vas60.0 L
Re / nominal Z5.75 Ω / 8 Ω
Xmax3.0 mm
Sensitivity94.2 dB (1 W/1 m, calc); 97 dB (2.83 V/1 m, mfr)
Power handling250 W

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

Sealed (Qtc 0.707) — Vb55.5 L
Sealed — Fc / F376.5 / 76.5 Hz
Ported (suggested) — Vb114.0 L
Ported — Fb / F343.4 / 39.2 Hz
Open in designer →Use my measured parameters →Buy at Parts Express →

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About this driver

The Eminence BETA-10A is a 10.5″ woofer with a free-air resonance of 53 Hz and a total Q (Qts) of 0.49. Its efficiency-bandwidth product (EBP) of 102 points toward a ported alignment. In a 55.5 L sealed box it reaches an F3 of 76.5 Hz (Qtc 0.707); a suggested 114.0 L box tuned to 43.4 Hz extends to about 39.2 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Eminence BETA-10A 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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