Dayton Audio ND91-8
fullrange · nominal (partial) — Dayton Audio datasheet (https://www.daytonaudio.com/images/resources/290-226--dayton-audio-nd91-8-specification-sheet.pdf)
Thiele/Small parameters
| Fs (resonance) | 70.7 Hz |
| Qts | 0.47 |
| Qes / Qms | — / 4.29 |
| Vas | — |
| Re / nominal Z | 7.8 Ω / 8 Ω |
| Xmax | 5.1 mm |
| Sensitivity | 82.1 dB (2.83 V/1 m, mfr) |
| Power handling | 30 W |
Published (nominal) values, params partial — verify by measurement (DATS/REW) before building.
Datasheet (PDF) ↗ — manufacturer-hosted
Recommended enclosures
T/S are partial — fetch the datasheet for the full parameters to model a box.
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About this driver
The Dayton Audio ND91-8 is a 3″ fullrange with a free-air resonance of 70.7 Hz and a total Q (Qts) of 0.47. See the sealed vs ported guide for how to choose.
Recommended partners
modeled estimateThe tweeters below pair well with the Dayton Audio ND91-8 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.
- Seas 27TBFC/G H1212-06Good match· 92/100
Suggested crossover 2.65 kHz (4th-order, Linkwitz-Riley)
Build this pair → - SB Acoustics SB29RDC-C000-4Good match· 92/100
Suggested crossover 2.65 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Peerless by Tymphany D27TG35-06Good match· 92/100
Suggested crossover 2.65 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Dayton Audio RS28F-4Good match· 92/100
Suggested crossover 2.65 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Dayton Audio AMT3-4Good match· 92/100
Suggested crossover 2.65 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Dayton Audio DC28F-8Good match· 92/100
Suggested crossover 2.65 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.