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Elrog 300B vs Takatsuki 300B tubes

Has anyone heard the Elrog 300B tubes ? I read an article which mentioned that the Elrog 300B delivers 15% less power than a traditional 300B tubes. Can anyone confirm that it is audible ?

I am choosing between Elrog and Takatsuki 300B tubes. I would prefer the Elrog because it is cheaper and supposedly wonderful but if it really sounds less powerful then I have to rethink.
pani
jetrexpro
506 posts
 
Charles I agree there is some confusion going on. A call to Israel will solve this. I would guess the Franks Power supply is outputting more or less 425v. And if it is somewhere around 425v no adjustments to the Cathode resistor would be needed.
jetrexpro
506 posts
 
If the power supply is outputting somewhere around 425V that would mean the 300b tube would see a more conservative 325 to 350v acoss the plate depending on the cathode resistor value.
jwm
918 posts
 
Charles I think Doug has the test equipment to measure these tube paramaters on his test bench. Its nice to have a Techy friend in the audio business.
charles1dad's avatar
charles1dad
10,250 posts
 
Jeff,
It would be enlightening if he can measure plate voltage and other fundamental parameters.
Charles,
tmmvinyl
35 posts
 
Charles,

Does your MKII incarnation of the Frankensteins have both an HT fuse and a second AC fuse?

It is my understanding that the HT fuse is intended to protect the Frankensteins in the event the 300B tube fails.

I am curious whether the HT fuse blew when your 300B tube failed?
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