Sine Design

Eminence KAPPA-15LFA

woofer · EBP 95 → suits either box · nominal (full) — Eminence datasheet (https://cdn.shopify.com/s/files/1/0270/8665/1462/files/Kappa_15LFA.pdf)

Thiele/Small parameters

Fs (resonance)39 Hz
Qts0.38
Qes / Qms0.41 / 6.08
Vas159.1 L
Re / nominal Z5.4 Ω / 8 Ω
Xmax5.5 mm
Sensitivity95.5 dB (1 W/1 m, calc); 99 dB (2.83 V/1 m, mfr)
Power handling600 W

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

Sealed (Qtc 0.707) — Vb64.7 L
Sealed — Fc / F372.6 / 72.6 Hz
Ported (suggested) — Vb130.6 L
Ported — Fb / F341.5 / 41.5 Hz
Open in designer →Use my measured parameters →Buy at Parts Express →

Affiliate disclosure: some links are affiliate links and we may earn a commission on qualifying purchases at no extra cost to you. Prices are estimates at the time of writing; verify on the retailer's site.

About this driver

The Eminence KAPPA-15LFA is a 16″ woofer with a free-air resonance of 39 Hz and a total Q (Qts) of 0.38. Its efficiency-bandwidth product (EBP) of 95 points toward either alignment. In a 64.7 L sealed box it reaches an F3 of 72.6 Hz (Qtc 0.707); a suggested 130.6 L box tuned to 41.5 Hz extends to about 41.5 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Eminence KAPPA-15LFA 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.

Related woofers