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In the Forum: Audio Discussions
In the Thread: How to get a LOT of SET power.
Post Subject: 2kV-3kV of B+ vs. 1A of plate currentPosted by Romy the Cat on: 4/17/2011
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 N-set wrote: |
| And paralled drivers? May I ask why you wanted to avoid them but would accept paralled output tubes? |
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I would for sure avoid any paralleling, would it be driver or output. Still, driver provides voltage gain and output stage - current gain. The difference between the paralleling tube will be more affecting voltage gain stage then current, at least it is what I feel but I do not insist the I am right.
| gordan wrote: |
| Guys, you seem to be perfectly comfortable with 2kV of plate voltage in your rooms? |
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We are perfectly comfortable to talk about it. No one put any 2kV in anybody room. We are talking about what conceptually might be done. I would personally be much more comfortable with parallel 6C33C, which might be even sonically preferable as they would have ultra low Rp and very high current. (Higher current = higher rise time as less sensitive to any capacitance). The problem is that now one would say what the factual result is as no one, of very-very few would experiment with all of those options.
Another subject you are losing, gordan. I do not know him personally but if you see what N-set then you recognize the he is very experienced builder. The people who do not afraid 2kV-3kV power supplies are ether ignorant or stupid. N-set neither ignorant nor stupid and he knows how to deal with what he is dealing with. I, with my experience would not touch 2kV-3kV, in fact the people who advise me explicitly prohibited me to do it. However, for well experienced person it is not a big deal. Do not forget that somebody work on 750.000.000 power lines – if to know how to do it then voltage is not a problem – ignorance is. I am very sure that a well-built 2kV power amp made to the appropriate standards will be in home as dangers as a kitchen toaster. After all in older color TV we has 36.000V, so how many people were damaged?
BTW, if I sometimes to assemble the Dima’s Zarathustra II hybrid then …it has 5A idle current in output stage. The PS for it also VERY obnoxious. It is class A so it is huge input chokes with 4 by 270.000uF per channel. The power transformers if I remember correctly are rated for 70V/25A. I can’t not even move the box with parts of Zarathustra II power supply…
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