NOS Siemens in a Plexi

bobtec · Post by **bobtec** » Sun Jan 22, 2006 1:23 pm

Can somone tell me the voltage of my 93 100 watt plexi ri. Will I blow the tubes up if I use Siemens -34's nos thanks

white room · Post by **white room** » Sun Jan 22, 2006 3:51 pm

The B+ on my 95' R/I was 475VDC with the stock PT and Svetlana EL34's.

5150loveeddie · Post by **5150loveeddie** » Sun Jan 22, 2006 4:07 pm

You should be ok, I use a quad of RFTs in my plexi with a B+ 495, that is hight for Siemen el34 it is recommended to use them with a max voltage of 450, but many people had no problem (like me) running them at higher B+..........

I've been running them for at least a year now and they didn't drieft a bit....steady like a rock.........

dynaman · Post by **dynaman** » Sun Jan 22, 2006 6:52 pm

I'll second that. I've been running an old quad of RFT's in a Super Lead reissue for over a year with 500 volts on the plates. I've never had a problem with them in my hifi Dynaco units that run EL34's much closer to class A.

novosibir · Post by **novosibir** » Sun Jan 22, 2006 10:18 pm

No problems with the NOS RFT EL34 or the "Siemens" stamped RFT's

up to 530 volts B+, if your power stage is free of RF ocillation.

Larry

bobtec · Post by **bobtec** » Mon Jan 23, 2006 4:03 pm

Thanks alot This is the best site You guys are nice enough to share your info to the general amp public One last thing, in your oppinion do you think the siemens are a better than JJ,EH, GT, china or Russian el-34

novosibir · Post by **novosibir** » Mon Jan 23, 2006 4:09 pm

It's IMO the best power tube still abvailable, just right after the Mullard!

Great sounding, great longevity, stable working, high voltage proof! What more do you await from a power tube?

Larry

MacGaden · Post by **MacGaden** » Mon Jan 23, 2006 4:11 pm

How about NOS Tesla´s ?

5150loveeddie · Post by **5150loveeddie** » Mon Jan 23, 2006 4:23 pm

novosibir wrote:It's IMO the best power tube still abvailable, just right after the Mullard!

Great sounding, great longevity, stable working, high voltage proof! What more do you await from a power tube?

Larry

YEP

dynaman · Post by **dynaman** » Tue Jan 24, 2006 2:02 am

I've found that the best Tesla's are the ones with the brown bases. I've had problems with the black bases (no, I'm not talking about JJ's). Sound as good as the Seimens to me.

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NOS Siemens in a Plexi

NOS Siemens in a Plexi

Siemens in the Plexi