Angry Charles Bass Pot

bobthebuilder

New member
Hey everyone - new pedal builder here.

I've recently built an angry charles and everything seems to work except the bass control. After 12 O'clock on the knob the volume cuts off suddenly. Before 12 O'clock the volume increases as the knob is turned CCW. I've given a preliminary look over all the solder joints, components, and correct orientation of the potentiometers, and nothing seems obviously out of order. Any thoughts on what could be causing this strange behavior?
 
The circuit should work correctly if C12 is turned around. The left side of C12 is biased at 0VDC and swings up to +/- 1.6V or so, clamped by D2 & D3. The right side of C12 is biased at Vref (+4.5VDC) and has the same AC swing as the left side. Once C12 has been exposed to reverse voltage, it has probably been permanently damaged and should not be reused. Install a new one.
*Update*
Removed and installed and reversed a new 2u2 on C12. It works as it should. You’re the man! Thanks a lot!
 
Last edited:
Back
Top