I searched and couldn't find anything on this so hopefullysomeoneknows the secret. One of my tech's (now gone) did it oncewithgreat success.

Basically I need to create a flat, round diaphragm, roughly.030thick by 1.200 diameter and then be able to clamp the outeredge inplace and then be able to push and pull on an area of thecentersection and have it stretch up and down accordingly.

The outer edge stays stationary and there is a circular areain thecenter of the diaphragm that is clamped to facilitatethereciprocating up and down movement.

Thanks for any help here.

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