I'm currently drafting a perfboard layout for this one. I'm confused about the "delay" pot. In the schematic, the pot's third pin is shown as going to the PT2399's pin #4 (DGND), which is directly connected to pin #3(AGND), which in turn is grounded. The path is shown as grey (the rest of gnd is green) in the pcb's layout. Wouldn't it be the same if the pot's third pin was grounded somewhere else?
Also, somewhere I can read more about how this specific part of the circuit (delay time) works, and also an overall analysis for this or similar PT2399 circuits?
Link to schematics/pcb layout: http://www.tonepad.com/project.asp?id=51
Thanks for any help.