Hi, I’m new here. I have 2 original EHX boxes (Dlx Elec. Mistress & Bad Stone Phase Shifter). My question concerns the Bad Stone. It has 2 external knobs with color switch, 3 internal pots and runs on 2 9V batteries. I believe its the EH-5800 v1.

I bought it in the late 70’s as a teenager (mid 40’s now). Being a VERY inquisitive young man, I tried to improve on the internal adjustments… failing miserably. Never being able to return it to its former factory settings (and not bright enough to note where they started), I dropped it in a tool box and gave up.

Well, guess what I found after around 30 years, and it still works. I have made some adjustments and it sounds like I am close, but the color switch changes nothing. I assume its an adjustment issue.

My question is: Can you tell me what adjustments need to be made to the internal pots to bring it back to near factory specs? Like turn the red pot 1.25 turns to the right… etc.

Any help would be greatly appreciated.

Its the same as this one (posted previously) just will all black knobs and a silver switch

[img]http://i11.ebayimg.com/08/i/001/2f/ab/1b64_1.JPG[/img]