Sine Design

Faital Pro 5PR120

midwoofer · EBP 357 → suits a ported box · nominal (full) — Faital Pro datasheet (https://faitalpro.com/products/files/5PR120/8/5PR120_datasheet_8.pdf)

Thiele/Small parameters

Fs (resonance)100 Hz
Qts0.27
Qes / Qms0.28 / 8
Vas4.2 L
Re / nominal Z5 Ω / 8 Ω
Xmax3.1 mm
Sensitivity93.6 dB (1 W/1 m, calc); 100 dB (2.83 V/1 m, mfr)
Power handling100 W

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

Sealed (Qtc 0.707) — Vb0.7 L
Sealed — Fc / F3261.9 / 261.9 Hz
Ported (suggested) — Vb1.1 L
Ported — Fb / F3150.8 / 177.3 Hz
Open in designer →Use my measured parameters →Buy at Parts Express →

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About this driver

The Faital Pro 5PR120 is a 5.5″ midwoofer with a free-air resonance of 100 Hz and a total Q (Qts) of 0.27. Its efficiency-bandwidth product (EBP) of 357 points toward a ported alignment. In a 0.7 L sealed box it reaches an F3 of 261.9 Hz (Qtc 0.707); a suggested 1.1 L box tuned to 150.8 Hz extends to about 177.3 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Faital Pro 5PR120 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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