Well, I'm trying yet another new pair of rectifiers in my neverending quest to find ones that don't buzz. Right off the bat there is hum in the left channel. I'm hoping this goes away with some run time.
I have to admit I'm getting incredibly burned out on rolling these tubes. Absolutely no fun in it at all, just crossed fingers.
I do still think the idea of doing the full wave bridge rectification scheme has a lot of value. The difference may not be huge but it eliminates parts from the signal chain, and in a TOTL amp like Glenn's stuff you can probably tell the difference. We used the 6BY5 because it has the unique ability to do this with 2 tubes where usually you need 4 when using TV damper diodes. The 6AX4 is the typically used tube I believe.
I'd encourage others to consider the 6AX4 if they're doing a high dollar amp with a big chassis, assuming the tube is compatible in terms of things like PI voltage. Stay away from the 6BY5 though. Enticing as it seems to cut 4 tubes down to 2 this thing is nothing but a buzzy, hummy pain in the ass.
Luckily there isn't even the option if you're doing 300B since the 6BY5 can't handle the voltage. On paper it seemed ideal for a 45 or 2A3 amp.......... in practice, not so much.
, wife wasn't so happy.
