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In Reply to: RE: Cathodyne VS LTP posted by Triode_Kingdom on May 01, 2021 at 06:46:04
You could consider a 6BN4 in place of the 6C4. It's also a 7 pin and they have higher transconductance and gain while the other specs are similar to the 6C4.
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nada aqui
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Buy Chinese. Bury freedom.
6AB4 (1/2 a 'T7) μ = 60 and 6GK5 μ =78.
Eli D.
Those appear to be significantly less linear than the 6BN4 - probably OK in a cathode follower or cathodyne splitter as long as the quiescent current is high enough.
The rating for "heater negative with respect to cathode" is a problem for the majority of possible subs in cathodyne service. With +400V B+, voltage on the cathode of the splitter will be around +100V DC in addition to 60V AC pk-pk signal. It's not clear to me yet whether I'll elevate the heaters in this driver. In any event, I don't see much reason at this point to look for a different tube type. I have a decent stock of 6C4, and this tube has proven it's capabilities in this service in many commercial amplifiers. I have bigger problems at hand right now, like aligning 3D dimensions in the various chassis pieces using 2D software. :)
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Buy Chinese. Bury freedom.
those are single elements, yes?
Go totally nuts; 6HV5A. mu of 300, gm of 65 mA/V...not a 7-pin though...LOL
cheers,
Douglas
Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
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