GrindingThud
1000+ Head-Fier
- Joined
- Dec 11, 2012
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OK, I'm looking at committing apostacy and install portions of the crack speedball kit into my WA3. The two amps are very similar, with exception of maybe the B+ and tube bias points. They both use 6AS7 output tubes with simple cathode follower resistor bias...crack with 3K and WA3 with 1.5K. My question is if the speedball instructions contain enough information for me to choose proper resistor values to match my current Woo bias? With 193V on my plate, I'm seeing about 35V on the cathode. Thoughts?