Sine Design

Faital Pro 18HP1040

subwoofer · EBP 109 → suits a ported box · nominal (full) — Faital Pro datasheet (https://faitalpro.com/products/files/18HP1040/8/18HP1040_datasheet_8.pdf)

Thiele/Small parameters

Fs (resonance)38 Hz
Qts0.34
Qes / Qms0.35 / 8.75
Vas196.3 L
Re / nominal Z5.5 Ω / 8 Ω
Xmax9.0 mm
Sensitivity96.7 dB (1 W/1 m, calc); 99 dB (2.83 V/1 m, mfr)
Power handling1000 W

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

Sealed (Qtc 0.707) — Vb59.1 L
Sealed — Fc / F379.0 / 79.0 Hz
Ported (suggested) — Vb111.6 L
Ported — Fb / F345.3 / 47.7 Hz
Open in designer →Use my measured parameters →Buy at Parts Express →

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About this driver

The Faital Pro 18HP1040 is a 18.5″ subwoofer with a free-air resonance of 38 Hz and a total Q (Qts) of 0.34. Its efficiency-bandwidth product (EBP) of 109 points toward a ported alignment. In a 59.1 L sealed box it reaches an F3 of 79.0 Hz (Qtc 0.707); a suggested 111.6 L box tuned to 45.3 Hz extends to about 47.7 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Faital Pro 18HP1040 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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