Hi all,
I would first like to apologize that this is totally unrelated to Pd. However I figured that this list is the most likely place to find an answer among the communities I subscribe to.
Years ago I used some driver units to playback super low frequencies, down from the inaudible up to probably 100Hz at most. It was more like a chunk of steel designed to mount on any surface expecting it to resonate. These units were also very inexpensive and ran for 10s or 20s of US dollars I think.
Today when I search for driver units of such kinds, all I can find are ones which look more like speaker cones and not exactly what I recall.
Does anyone know of where to look, or keywords pointing to such products? and hopefully places I can purchase them online?
BTW, of course the goal is to drive some of these using PD, inspired by Roman's work using solenoids :)
-- David Shimamoto