Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by Hand of Doom, Feb 28, 2012.
Are these safe to use in a Soldano Avenger?
Probably not. You'd have to measure your plate voltage in the amp. The max for the Tung Sol 5881 is 400v. Since they are NOS, they will be able to take more voltage than published, but with tubes as rare and expensive as the 5881, do you want to take a chance on burning them out?
Having said that, I put a pair in a Yamaha T-50H (Soldano designed) The plate voltage was 500v and IIRC I biased them at 35mA per tube. The tubes survived, but I didn't run them in the amp that long and I did not crank the amp either. YMMV.
450 volts on the plate are well within what NOS Tung Sols can handle. See if you can find out what the plate voltage is for the amp.
Maybe, but why? That's a high gain machine. The subtle qualities of the old 5881's will be overshadowed by the pre-amp gain
Master on 7 and pre on 3, no overshadowing.
I tried it for a bit, nice. Tried some newish 6L6GC (TAD, Tung Sol, Ruby) all sounded a little on the harsh side to the US/Tung Sol. GE sounded great, very articulate. The real tone came from a GEC KT66 and RCA 6L6GC. this is a the other pair of what I use in a Germino C45. Man that combo just works.
Just checked, 480 - 498 ish.
Biased up a pair of GE 35.0 and 37.1
I was hesitant on the Tung Sol and the GEC/RCA were way too far apart to use, man they sounded good together.
I don't recommend using the Tung Sols.
That's hot for a 23 watt tube! over 80% dissipation
Find someone with a Tweed Bassman- that's the tube it was designed around.
GE Clear Top NOS 6L6GC's great tube ran them in my 53' Super Tweed,,,,,Killer Tone. And I checked many a 6L6 in there......