Sine Design

Faital Pro 8PR150

woofer · EBP 139 → suits a ported box · nominal (full) — Faital Pro datasheet (https://faitalpro.com/products/files/8PR150/8/8PR150_datasheet_8.pdf)

Thiele/Small parameters

Fs (resonance)75 Hz
Qts0.48
Qes / Qms0.54 / 4.4
Vas16.2 L
Re / nominal Z5.8 Ω / 8 Ω
Xmax5.0 mm
Sensitivity92.9 dB (1 W/1 m, calc); 94 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) — Vb13.9 L
Sealed — Fc / F3110.5 / 110.5 Hz
Ported (suggested) — Vb28.8 L
Ported — Fb / F362.8 / 57.1 Hz
Open in designer →Use my measured parameters →Buy at Parts Express →

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About this driver

The Faital Pro 8PR150 is a 8.5″ woofer with a free-air resonance of 75 Hz and a total Q (Qts) of 0.48. Its efficiency-bandwidth product (EBP) of 139 points toward a ported alignment. In a 13.9 L sealed box it reaches an F3 of 110.5 Hz (Qtc 0.707); a suggested 28.8 L box tuned to 62.8 Hz extends to about 57.1 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Faital Pro 8PR150 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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