Hi Guys-
Long time BH member and user, but haven't posted for years since the old site not run by Doc.
The last things I've built were highly modded FP2's and a Seduction in a copper chassis and a remote matching PS.
I recently built a Crack given to me by a friend, and upon testing noticed something I had thought before to be unprecedented in all my engineering experience. Maybe someone can shed light on this. During voltage readings, the voltages at TP1 and TP5 were around 80 volts. Cool. Then the strange stuff happens...
With the supplied 6080 tube in place, the socket lugs B1 and B3 read 26 volts.
With a 6AS7G tube I had in stock in place, the voltages at B1 and B3 read 65 volts.
The problem with me lies int he fact that the TP1 and TP5 barrier strip lugs are hardwired to B1 and B3 respectively. School teaches you that two different readings at opposite ends of the same wire are not possible, and this is the first time I've seen it in a whole bunch of years doing electronics.
The kit works fine, the only problem is a DC offset type "pop" at the bottom end of the volume pot, on both volume going up and down. The only variation from stock is the use of a 6DJ8 tube for the driver and the according heater change to accommodate this.