need piezo help

Building my first CBG using Make Magazine plans (most recent) and I am electrifying it using a Radioshack piezo part #273-0059 (2700 +/- 500Hz).

I have two questions:

1) The piezo I have was in the plastic housing with a circuitboard. From what I have read here on CBN, I am supposed to cut away and throw away the circuit board part of the piezo, leaving me just the silver disc and trailing wires. There are 3 wires, what is probably signal, ground and one for the microswitch for the now thrown away circuit-board. Should I ignore the middle wire and just wire the signal and ground wire to the phono jack? Is that correct?

2) Once the piezo and phono are wired together I now must mount the piezo. I plan to mount it between the stock of the fretboard and the cigarbox lid directly beneath the strumming area. I have read and seen various methods but should this disc be totally glued down (immobilized) or as it was mounted within it's original plastic housing where a small rubber ring on the silver disc acted as a pedestal keeping the silver disc held up for max vibration? I have also seen here on CBN the piezo glued between two pieces of wood so it is effectively inside the stock. Doesn't it need to reverberate or something or are the frequency reverberations picked-up even when totally glued down or smashed between two surfaces?

Any guidance is much appreciated!

Steve

Replies

uncle Lou June 16, 2010 at 6:14pm

I like puting one piezo underboard where dridge is and one bottom back of box you can actualy ajust susstain with your body, holding box tighter or looser to u
Steve Graham June 16, 2010 at 6:07pm

Thanks! So immobilizing it at least somewhat is important.

uncle Lou said:
I use dbl sided tape, walmart, dbl it up on board and one on top, piezo`s from my experience need to be buffered or way to much feedback, hope that helps some
uncle Lou June 16, 2010 at 5:48pm

I use dbl sided tape, walmart, dbl it up on board and one on top, piezo`s from my experience need to be buffered or way to much feedback, hope that helps some

This reply was deleted.