VT52: are the triode and pentode alike?

[Klimon]

hello,

I just bought some nos Mullard VT52 pentodes. Allas, all of the vt52 schematics I can find are for VT52 dht triodes. Strangely enough both (seemingly very different) tubes share the same name and I can nowhere find any article or mention that explains the difference between these two types or that talks about the history of the vt52...

Is the pentode a later version? Can it be used in a vt52 triode circuit by connecting it in triode mode?

And most importantly, does anyone know if it sounds good? I've heard good things about the triode, but the type I have is and looks very different (with topcap and box-anode I think it's called). You can find a picture and specs here:

http://www.r-type.org/exhib/aad0072.htm

Many thanks!

 

[barretter]

I'm afraid they're two different valves with the same name, one British (pentode) and the other American (triode).

 

[Klimon]

 

[mcs]

You can find data here:

http://frank.pocnet.net/sheets/046/e/EL2.pdf

Best regards,

Mikkel C. Simonsen

 

[Klimon]

Thanks

I'll probably leave it at that and sell the tubes.

Now I understand why I only paid a fraction of what a REAL vt52 costs😀