I might be tempted to solve it with a slide pot interfaced to a quiet relay= .. It does sound like an interesting challenge.=20 Robert Rolf wrote: >I had tried using a somewhat loose-fitting rubber grommet on a test >> piece of aluminum but the addition of the grommet did not reduce the >> noise by any significant amount. I was reluctant to modify the >> equipment itself until I knew if it would help. > > >You said that this was a piece of desk gear. So why not mount a leaf switc= h >on the side, in it's own >small box, and be done with it? No noise and simple to fix in future if th= e >announcer manages to break >off the switch arm. > >R >--=20 >http://www.piclist.com PIC/SX FAQ & list archive >View/change your membership options at >http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .