Sine Design

Peerless by Tymphany SDS-100F25CP09-04

woofer · EBP 137 → suits a ported box · nominal (full) — Peerless by Tymphany datasheet (https://products.peerless-audio.com/pdf/311)

Thiele/Small parameters

Fs (resonance)80 Hz
Qts0.53
Qes / Qms0.584 / 5.34
Vas2.0 L
Re / nominal Z3.6 Ω / —
Xmax5.0 mm
Sensitivity—

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

T/S are full — fetch the datasheet for the full parameters to model a box.

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About this driver

The Peerless by Tymphany SDS-100F25CP09-04 is a 4″ woofer with a free-air resonance of 80 Hz and a total Q (Qts) of 0.53. Its efficiency-bandwidth product (EBP) of 137 points toward a ported alignment. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The tweeters below pair well with the Peerless by Tymphany SDS-100F25CP09-04 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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