5B6

[johnnyreece]

So, I'm thinking of jumping on the 5B6 bandwagon. I'm thinking of using some good ol' 6L6 metal can tubes. Those are pretty darn close in spec to the original tubes, right? I'm a sucker for these old metal cans.

[Phil_S]

No glow, no magic
Everyone needs one of these. Easy build, great tone.

[LOUDthud]

Be sure you ground pin 1 on the socket of those metal 6L6s. It's connected to the metal shell.

[johnnyreece]

No glow, no magic
Everyone needs one of these. Easy build, great tone.

I'm honestly a little scared that I can't see if it's red-plating or not.

[Blackburn]

I'm honestly a little scared that I can't see if it's red-plating or not.

Voltage and current, my friend.

A PT spec'd at 350-0-350 is preferred. I'd build it up exactly like the Fender schem, except for the coupling caps coming off the 6SC7. I changed those to .02uf with great results.

[RWood]

Blackburn...How much and what type change do .02 caps make?

[David Root]

I used .05 there and reduced the 5881 coupling caps to .05 from .1, sounds great! And the Mag Cpts Supro Thunderbolt PT which is 350-0-350. With the matching OT.

I had a '47 Magnatone SE 10W combo with a metal 6L6 in it, worked fine but I changed it to a glass GC just in case it overheated.
An old tube seller told me about 15 years ago that the metal cased tubes were prone to overheating and failing. He was in his eighties then so I'm sure he knew what he was talking about.