Sine Design

Peerless by Tymphany XT25SC90-04

tweeter · EBP 709 → suits a ported box · nominal (full) — Peerless by Tymphany datasheet (https://products.peerless-audio.com/pdf/206)

Thiele/Small parameters

Fs (resonance)830 Hz
Qts1
Qes / Qms1.17 / 7.36
Vas0.0 L
Re / nominal Z3.2 Ω / —
Xmax0.9 mm
Sensitivity—

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

Datasheet (PDF) ↗ — manufacturer-hosted

Recommended enclosures

This is a tweeter; Thiele/Small box parameters are not used for enclosure design.

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About this driver

The Peerless by Tymphany XT25SC90-04 is a 1.5″ tweeter with a free-air resonance of 830 Hz and a total Q (Qts) of 1. Its efficiency-bandwidth product (EBP) of 709 points toward a ported alignment. See the sealed vs ported guide for how to choose.

Recommended partners

modeled estimate

The woofers and midranges below pair well with the Peerless by Tymphany XT25SC90-04 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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