Ok first off I am new, so if this has been asked before I am sorry. I have searched and I haven't found an answer. So anyway on to my questions.
1. I am wanting to wire two piezos(Radio Shack Piezo Audio Transducer) to a tone pot and a volume pot then to the 1/4'' audio jack. I have seen a wiring diagram on this site that shows me how to do that but I don't know if and what kind of capacitor to use. Both pots are 250K if that helps.
2. My local Radio Shack doesn't usually stock the piezo audio transducers, but they have the piezo buzzers. Do these still work like the audio transducers or do I need to modify them.
Thanks in advance for any help. I have built three acoustic CBGs but this next one will be my first to wire up. I have zero experience with wiring things of this nature.
Brandon
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Due to the high impedance of the piezo, the tone pot won't have much, if any, effect on the sound. If you left out the volume pot, you might as well just wire the piezos straight to the jack.
Wiring the two piezos in parallel, instead of series, will help lower the impedance, thus lowering the harsh screechy sound of the piezo.
The one from Radio Shack everyone uses is called a Piezo Element: http://www.radioshack.com/product/index.jsp?productId=2062402 Catalog #: 273-073
It works better if you break it out of the plastic case, then cover it with some kind of damping material. There are probably a thousand posts on how people mount and damp their piezos.
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