I am aware of the interior trimmer, and clipping from the diodes in the Thermionic distortion and have built several of them, as well as the Dirty Sanchez and the Brown Betty.
Questions:
1) One of my Thermionics has considerably more gain that the others the only thing I can see that is different is that the higher gain one has 1N4148's and the others have 5817's . My understanding is that the 1N4148's would clip at a higher voltage making them produce less distortion than the 5817's. Or do I have this backwards?
2) Two others work as they should, (although producing lower gain than the one mentioned above) but I can not get varius LED's to work in them. I have tried different led's as well as changing the orientation. The LED's also work when i touch then to a 9v batter with a resistor in series. Was there any issue with some of these PCB's as it relates to the LED's
Questions:
1) One of my Thermionics has considerably more gain that the others the only thing I can see that is different is that the higher gain one has 1N4148's and the others have 5817's . My understanding is that the 1N4148's would clip at a higher voltage making them produce less distortion than the 5817's. Or do I have this backwards?
2) Two others work as they should, (although producing lower gain than the one mentioned above) but I can not get varius LED's to work in them. I have tried different led's as well as changing the orientation. The LED's also work when i touch then to a 9v batter with a resistor in series. Was there any issue with some of these PCB's as it relates to the LED's