As I have been saying. :^)
post #121 of 298
9/25/08 at 3:05pm
The flash and/or spark is only at switch-on. After that the amp and tube run fine.
Did someone in this thread not mention that the 5AR4 and 5U4G would be fine - something to do with direct and indirectly heated tubes?
I have used a Sovtek 5AR4 and there is no flash or spark at switch-on. Unfortunately, listening to it after the Sophia Princess really shows how much better the Princess is - more definition, more air, more space around the instruments................
I have to get this working with the WA6 SE!
It would be interesting to see if everyone using the Sophia Princess with the WA6, WA6 maxxed, WA6 SE and WA6 SE maxxed is getting the flash and/or spark issue. If not then it may be faulty tubes and not the amp circuit.
So far we have two WA6 SE maxxed users with the problem. Anyone else care to add to this list with a Yes or No?
I've got a fully max'ed out WA6 SE with Sophia princess 274b. I think I put at least 200 hours on the tube, and no spark on start up yet. The only thing is the 274b got dark.
My Sophia had about 10 hours on it when I first noticed the flashes. I also have a NOS 5R4GA that hasn't flashed, but I've used it very little. The stock Sovtek rectifier flashed, died, and took out the fuse when I first bought the amp. Jack sent me a warranty replacement Sovtek, which I haven't used yet, along with the Sophia that I ordered at the same time.