Sine Design

Visaton BGS40-8

woofer · EBP 82 → suits either box · nominal (full) — Visaton datasheet (https://www.visaton.de/sites/default/files/dd_product/bgs40_8.pdf)

Thiele/Small parameters

Fs (resonance)40 Hz
Qts0.42
Qes / Qms0.49 / 3.13
Vas263.0 L
Re / nominal Z— / 8 Ω
Xmax—
Sensitivity97.2 dB (1 W/1 m, calc); 98 dB (2.83 V/1 m, mfr)
Power handling200 W

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

Sealed (Qtc 0.707) — Vb143.4 L
Sealed — Fc / F367.3 / 67.3 Hz
Ported (suggested) — Vb300.4 L
Ported — Fb / F338.4 / 36.8 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 Visaton BGS40-8 is a 16″ woofer with a free-air resonance of 40 Hz and a total Q (Qts) of 0.42. Its efficiency-bandwidth product (EBP) of 82 points toward either alignment. In a 143.4 L sealed box it reaches an F3 of 67.3 Hz (Qtc 0.707); a suggested 300.4 L box tuned to 38.4 Hz extends to about 36.8 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Visaton BGS40-8 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