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  1. J

    Measuring Bias on Drive '55

    Hi, I just completed the Drive '55 and it sounds awesome. However I set the trim pots for Q1 and Q3 by ear (about 3 o'clock) because I can't measure the bias. One probe goes to ground (case) and one to the outer left leg of Q1 and Q3, right? I'm measuring around 5,6 Volts on both, no matter how...
  2. J

    SOLVED Help with Dr. Trebor (aka Pharmacist) - mach schau not working

    Hi, sorry to hijack this thread but Dr. Trebor/Pharmacist threads are quite hard to find ... This is actually my second build, my first was Son of Ben and it worked right away. So I got cheeky and tried Dr. Trebor (I got the PCB and all parts from musikding in Germany, so good quality with all...
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