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RE: Tympani 1d ad

Posted by Roger Gustavsson on August 4, 2012 at 10:04:24:
Well Josh, you have been to the factory. Pictures of it show some jigs, a streching table for the Mylar, how they sort the plastic bonded magnets, the CNC milling machine etc. The production seems to rely on charing as many parts as possible. The magnets, the perforated sheet metal, the particle board etc. There seems to be a lot of manual work involved, like glueing the wire to the Mylar. The push-pull drivers need special jigs, the hinged ones. Most of these manufactoring steps can be replicated at home. What is difficult, it is to get the know-how that come by trial and error. Just look at the 3.7 and how it is different from the earlier designs. The tension/clamping of the diaphragm must have taken some time to optimise!
Tympanis before the IV, had some panels requireing more work than later ones. Sure, nowdays, they buy the perforated sheet metal customised. The first years they used standard sheet metal. The drivers of I-C, IIIA, I-D and IIIB are very similar. 12x60" (bass) or 8x48" (tweeters) sheet metal, spacers of 1/8" particle board, magnets has the same dimensions etc.