I have a preamp design I normally used this design but all of a sudden after building it again after a year of not using the design I hae an issue.
When I turn the volume nob up a little you hear music and then a little more then there is a load thump in the speaker then silence and thats using the 100k. If I use a 10k pot I can hear the music when the nob it turned all the way down just the same which isn't suppose to happen and I still get a load thump with a squeak this time but if I turn it up more I still get music the volume doesn't seem to change much though if any at all.
IF remove the pot and connect the wire leaving the negative of c1 and the output the music plays clean and nice I cant seem to get any adjustments using a pot though and Im using new pots, 50k high quality pot and generic 100k pots.
Can anyone help diagnose this issue.
When I turn the volume nob up a little you hear music and then a little more then there is a load thump in the speaker then silence and thats using the 100k. If I use a 10k pot I can hear the music when the nob it turned all the way down just the same which isn't suppose to happen and I still get a load thump with a squeak this time but if I turn it up more I still get music the volume doesn't seem to change much though if any at all.
IF remove the pot and connect the wire leaving the negative of c1 and the output the music plays clean and nice I cant seem to get any adjustments using a pot though and Im using new pots, 50k high quality pot and generic 100k pots.
Can anyone help diagnose this issue.