Chuck D. Bones
Circuit Wizard
This schematic is based on info I received here and I'm 95% confident it's correct. The EGOD is basically an EGDM with the biasing and gain tweaked a bit on each stage. This is the "as traced" schematic, again based on info I received here. It has one more part than the EGDM. I leave it as an excercise to the reader to figure out which part. I breadboarded it per this schematic and ended up making two mods. I changed VR2 to W20K for a better feel on the VOICE knob and changed Q1 & Q3 to J112 because a) they are still in production, and b) we get a little more high-freq gain in the first stage which translates to more range in the VOICE control. It's a mild OD. The DRIVE knob ranges from almost clean to a smooth grind. The circuit will accommodate almost any NPN Ge tranny. Highly recommended.
Green knob: VOLUME; Green knob: TREBLE; Green knob: VOICE; Green knob: DRIVE
![BJFE Emerald Green Overdrive.png BJFE Emerald Green Overdrive.png](https://forum.pedalpcb.com/data/attachments/57/57426-a38742ad4f5e4071041761992c7aab2a.jpg)
Green knob: VOLUME; Green knob: TREBLE; Green knob: VOICE; Green knob: DRIVE
![EGOD breadbboard 03.jpg EGOD breadbboard 03.jpg](https://forum.pedalpcb.com/data/attachments/57/57427-33feba614b5b53afc6ffc3a32f84a185.jpg)