I saw a post here about adding a piezo pickup to a strat and it inspired me to do the same to my own strat. After some reading and research, I realize that I need to add a preamp in order to get an appropriate sound from it. Don Tillman's preamp seems to be the popular choice for a preamp.
I'd like to be able to control the volume at the same time. How can I go about altering the schematic so that I can get volume control? Is it possible to add a volume pot between the piezo and preamp and if so, what value pot should I use? Or is there something I can do to the preamp so that I can adjust the volume?
I look forward to hearing your responses. Thanks for the help everyone!
yes its a good basis for a gain stage. It will drive a guitar amp or most line inputs. maybe change the output cap from 330nF up to say, 2.2uF to get max low end if you are driving a line input. Also, omit C6 to get about x3 gain, or add it in to get significantly more gain.
I suggest starting however, by mounting your piezo, plug it directly into a guitar amp input or non-tru bypass stomp box and find out how it sounds. The tone and level that you get will inform the right preamp design.