Sine Design

SB Acoustics SATORI MW13PNW-4

fullrange · EBP 141 → suits a ported box · nominal (full) — SB Acoustics datasheet (https://sbacoustics.com/wp-content/uploads/2021/01/5in-SATORI-MW13PNW-4.pdf)

Thiele/Small parameters

Fs (resonance)41 Hz
Qts0.27
Qes / Qms0.29 / 3.71
Vas14.6 L
Re / nominal Z3.8 Ω / 4 Ω
Xmax
Sensitivity87.2 dB (1 W/1 m, calc); 89 dB (2.83 V/1 m, mfr)
Power handling40 W

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

Sealed (Qtc 0.707) — Vb2.5 L
Sealed — Fc / F3107.4 / 107.4 Hz
Ported (suggested) — Vb3.9 L
Ported — Fb / F361.8 / 72.7 Hz

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About this driver

The SB Acoustics SATORI MW13PNW-4 is a 4.5″ fullrange with a free-air resonance of 41 Hz and a total Q (Qts) of 0.27. Its efficiency-bandwidth product (EBP) of 141 points toward a ported alignment. In a 2.5 L sealed box it reaches an F3 of 107.4 Hz (Qtc 0.707); a suggested 3.9 L box tuned to 61.8 Hz extends to about 72.7 Hz. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the SB Acoustics SATORI MW13PNW-4 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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