Tactile Transducers?

Posted by Mike C [IP: 208.133.29.99] on December 10, 1998 at 22:27:48:

In Reply to: Tactile Transducers? posted by Otto on November 29, 1998 at 01:55:17:

I made my transducers, and they have no side effects that are common with the cheaper/low excursion brand name units. I cut the cone and dust cover out of a 8" woofer which weighed about 5/6 pounds. Then I epoxied a wooden plug with a bolt thru it onto the recessed area that the dust cover was over. Now the only thing supporting the plug/bolt is the speaker spider. This of course won't do. Cut an 8" length of braket type stock (alum or steal rigid enough to just support the speakers weight with only a slight or no bow, drill holes in it until you get the right "spring support") and bolt across speaker frame with plug bolt going thru hole in the middle. Use rubber washers for the frame bolts/compression nuts. Secure the plug bolt to the braket with lock nuts and std washers and rubber washers. Be sure that bolt extends about 2.5" past crossmember. This is for mounting. Drill a interfernce hole in your mounting 2x4 and screw the xducer/bolt into it leaving enough clearance for 3/4" excursion. Mount with xducer hanging from the board, with rubber gasket material between the board and whatever mounting surfaces. The rubber is for "tuning" and "timing". Simply loosen or tighten the various bolts until the bass tracks perfectly with your system and has a somewhat flat response throughout it's range(whatever you need up to about 400hz) This system is not efficient. It will take close to the speakers rated power~100w,for serious demands. But, thats part of what makes it so smooth. In fact, My setup is flat to 10hz at full rated power, and you cannot tell that its not really bass. Really good bass!! Calibrate your system just as you would when adding a second sub.

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