Feedback Loop

Description:

• ​

Improvements:

• Expression pedal jack (easy to do, plenty of space)
• Momentary switch

Issues

• ​Loop jacks sometimes contact enclosure, grounding the signal - SORT OF SOLVED - Put electrical tape inside the enclosure and on the back of the jack tabs.

Question:

• Why do some pedals refuse to feedback? Or is it just that the frequency is too high to hear? Like my cat electra. Oscilloscope picked up high pitch resonance.
• What's the deal with some pedals oscillating at a certain frequency? Why is this affected by volume/tone/guitar pickup selected
• Why is there still feedback sometimes when the feedback knob is all the way down? Well I guess there is a max resistance the pot offers. Any way to make it open circuit? Mod the pot? Or possibly just need a larger pot? Would this have any other effects?