[Airslot]

Hmmm, go to classicmako.com and search for transducer. Look for posts by "Warthog" He's done a bunch of them. Another place with the info all posted if THT in the electronics forum. There is on thread there about 9 pages long dealing with this 'ducer. Or, if ya wait a few months, I'll do it first ;D

Airslot