A quote from Dave A at the ETF convention has me curious:
Quote:
Originally Posted by Dave A
The great 6BK4/6DB4 pin wiring discovery is a help to all of us.
|
I was aware that moving one or more "tie point" connections on pins of the HV regulator socket would allow use of a 6BK4 in place of the original 6BD4. What was the discovery at the convention? Thanks.