[sdradioman]

Are there any substitutes for the 6B4G output tubes for my 37-116 De Luxe? I tested them and the one Philco is very weak and the Ken Rad measured @ 3900 where average/good is 3000. Would like to just replace them both but D**n they are pricey. Whats so special about them?

[morzh]

Rare.....


Try Bob Dobush,
I bought mine from him, and the price was very fair.
6A5 can do but with little rewiring. Mine uses them (rare version, there are two).

[sdradioman]

Dang.....So it looks like I'm going to have to shell out some bucks if I want some NOS/strong ones. I'm not looking forward to dropping a $100 on a pair of tubes!

[Eliot Ness]

Bob Dobush (Findatube.com) has new ones for $35, used for $18:

https://docs.google.com/spreadsheets/d/1...li=1#gid=1

[Paul Philco322]

A good used tube may last quite a while, I would not hesitate to take a used. many pulls from old sets can be quite good. I am sure Bob tests them.

Paul

[KCMike]

Just to throw in with what Paul said. I have bought about 12 tubes at various times from Bob all used and have not had a problem with any of them. Good luck.

[Ron Ramirez]

^ ^ ^

Me too. Bob is the best.

[Phlogiston]

To answer your question, a 6A3 but you need to adapt the base to 4 pins.

[Arran]

 I think that there would also be a way to use a pair of triode connected 6L6s in a pinch, but I'm not certain that a 37-116 has a driver tube or not.
Regards
Arran

[morzh]

To add: my tubes in 37-116 tested weak, so just in case I bought a pair from Bob, used but good. Then when having finished with the restoration I put the old ones back first....let me just say, I never put the new ones in, the old weak ones sound fantastic.

[codefox1]

Yeah, "weak" ones sometimes do just fine especialy in this type of application.