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Your cart is empty.The low distortion and high excursion capabilities of the Dayton Audio ND91-4 3-1/2" full-range driver make it an ideal candidate for miniature point-source monitors, surround speakers, and line arrays. When teamed up with the matching ND series passive radiators this driver can produce incredible full sound from compact enclosures.
X. Mora
Reviewed in the United States on January 10, 2025
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Alison Scott
Reviewed in the United States on December 21, 2024
They make surprising amounts of bass for such a small speaker.
Oceanbreeze
Reviewed in the United States on August 19, 2023
Bought this as a small subwoofer to pair with some small bookshelf speakers I built with 3" full range tang band drivers. I have built and owned many speakers and this driver still surprised me. I was hoping for a bit more low end, comparable to your average bookshelf speakers, and paired with a 5-1/4" passive radiator and a 25 watt amp, this thing is a legitimate subwoofer. I haven't measured it, but I would put the frequency response of my setup, in an enclosure that's only about .25 cubic ft, to be around 40hz. Very impressive for such a small driver.
Johnny
Reviewed in the United States on December 18, 2023
Only 1 speaker
billieg
Reviewed in the United States on May 14, 2021
Have bought these before much better replacements to originals
qazw123
Reviewed in the United States on January 13, 2021
Bad boss and Bad Quality 🙄
WwwServeurpersoCom
Reviewed in France on February 8, 2019
Ce modèle de haut parleur ND91-4 est vraiment très performant pour sa taille et son prix et mérite 5 étoiles.C'est le second que je commande et ça manque cruellement de renforts en polystyrène niveau packaging...C'est triste, ce beau petit HP mort écrabouillé pendant le transport, voir photos.Au moins on a une belle vue éclatée de la voice coil et du système magnétique avec sa bague de démodulation en cuivre. Je repasse en 5 étoiles quand le vendeur m'aura envoyé le produit.
Bernard L
Reviewed in France on October 6, 2017
Ce HP large bande a une bonne réputation aux USA, mais il manque cruellement d'aigües - au-delà de 6-8000Hz la baisse est trop rapide, alors que pourtant il est capable d'une belle netteté si on équalise un peu en préamplification. Ou alors il faut lui adjoindre un circuit de compensation, ce qui enlève tout intérêt à ce type de HP qui est fait pour du câblage direct, sans filtre.Pou les basses, c'est surprenant de voir ce qu'une si petite membrane peut produire. Pour peu, encore une fois, qu'on l'amplifie ou filtre correctement et qu'on le place dans un volume suffisant pour ne pas l'étouffer. Adjoindre un bass-reflex ou ligne de transmission peut améliorer les choses mais attention à ne pas vous planter dans les calculs de volume et de longueur de ligne. Un si petit HP ne rentre plus dans les normes des softs de calcul...Bref, beaucoup de potentiel mais difficile à maîtriser.Attention à la faible puissance, amplifier avec prudence...
Ryan A. Sobieck
Reviewed in the United States on October 12, 2016
Everywhere on the internet, people are using these for small enclosure computer speakers or bluetooth speakers. So i have a different take since I used this in car audio.My car has a 3.5" on the dash. I was originally going to use a coaxial but decided against it. However, All the well known midrange speakers from car audio brands are up there in price. This woofer was reasonable in price so I gave it a shot.Pros : super clear. More full sounding than most 3 inch speakers. free air, I was able to cross at 140 Hz high pass with a good result. Low pass was set at 6500 hz @12db/octCons: it's not true full range, it needs to be crossed as part of a 3 way system
Rico C
Reviewed in the United States on February 22, 2013
I thought when i ordered this product it would be a pair of speakers. That is how you normally buy speakers. But this was only a single driver. For the price, i could have bought others with equal quality that came as a pair.Sound quality is good. I have them hooked up to a mini amp and they sound well. No real bass, but that is not why you would buy this speaker.
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