Dayton Audio ND25TA-4
tweeter · EBP 559 → suits a ported box · nominal (partial) — Dayton Audio datasheet (https://www.daytonaudio.com/images/resources/275-057--dayton-audio-nd25ta-4-1-inch-titanium-dome-neodymium-tweeter-4-ohm-specifications.pdf)
Thiele/Small parameters
| Fs (resonance) | 1470 Hz |
| Qts | 1.45 |
| Qes / Qms | 2.63 / 3.24 |
| Vas | — |
| Re / nominal Z | 3.2 Ω / 4 Ω |
| Xmax | — |
| Sensitivity | 91 dB (2.83 V/1 m, mfr) |
| Power handling | 20 W |
Published (nominal) values, params partial — 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 Dayton Audio ND25TA-4 is a 1.5″ tweeter with a free-air resonance of 1470 Hz and a total Q (Qts) of 1.45. Its efficiency-bandwidth product (EBP) of 559 points toward a ported alignment. See the sealed vs ported guide for how to choose.
Recommended partners
modeled estimateThe woofers and midranges below pair well with the Dayton Audio ND25TA-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.
- Dayton Audio ND65-4Good match· 92/100
Suggested crossover 3.70 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Dayton Audio RS75-4Good match· 92/100
Suggested crossover 4.21 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Dayton Audio RS75T-8Good match· 92/100
Suggested crossover 4.21 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Tang Band W0-2008SGood match· 92/100
Suggested crossover 12.34 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Tang Band W1-1070SHGood match· 92/100
Suggested crossover 5.01 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Tang Band W1-1815SAGood match· 92/100
Suggested crossover 6.88 kHz (4th-order, Linkwitz-Riley)
Build this pair →
Modeled estimate from T/S + geometry — no measurements. The verdict is robust; it improves with measured FRD/ZMA data.