The ND140-PR in Dayton is a passive radiator in diameter of 13.3mm ideal for speaker boxes of small size, in which a conventional speaker would struggle to adapt. Despite its small size, this passive radiator makes it possible to achieve as high performance as that of the radiator larger sizes, with a significant linear excursion capability, a membrane Aluminum, a rubber suspension and an adjustable mass. Visually similar to the famous series ND in Dayton Audio, the PR-ND140 can be used with any small speaker.

The threaded rod and wing nut at the rear of the radiator possible to easily add mass to adapt the loudspeaker resonance frequency. This speaker can be used for many applications: multi pregnant speakers, sound bar, portable enclosure ...