| Thoriated W [message #10985 is a reply to message #10984] |
Tue, 15 February 2005 06:49   |
PakProtector
Messages: 935
Registered: May 2009
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Illuminati (2nd Degree) |
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Hey-Hey!!!,
There is another who likes the Thoriated Tungsten filaments. Josh of ElectronLuv. I linked his site, I only had a single chance to hear one of his linestages, done with a DHTriode. It had some smoke leak out and did not function.I have a slightly different idea about loading and output stages, and believe it will be better. It will not look like a chopped, early 50's lead sled...
regards,
Douglas
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| Re: Pull pin... [message #10986 is a reply to message #10968] |
Tue, 15 February 2005 07:34 |
akhilesh
Messages: 1275
Registered: May 2009
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Illuminati (3rd Degree) |
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HI John,
I agree: there are two issues here. The first is that any well executed imlpementation will beat any poorly implemeneted one, almost by definition. THe second issue is that different designs have INHERENT weakenesses (tradeoffs) that need to be addressed in the implementation.
For example, in general, SETs have higher distortion INHERENTLY, and push-pulls eliminate even order distortion, by their design. To cut to the chase, it makes total sense to talk about and understand he limitations of each design. There is no need to keep falling back ion the poor versus good implementation argument, since that is a given. So I think we are all on the same page.
-akhilesh
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| Re: Thoriated W [message #10988 is a reply to message #10987] |
Tue, 15 February 2005 12:35 |
PakProtector
Messages: 935
Registered: May 2009
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Illuminati (2nd Degree) |
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49 Merc? too common. How about a Chrysler Imperial Hampton Coupe? New Yorker St.Regis? Cram in the '57 or '58 dual-quad, solid-cammed 392 Hemi. Josh's amps are certainly different from what you'd find at BestBye... regards,
Douglas
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| "Budget" SET [message #10989 is a reply to message #10974] |
Tue, 15 February 2005 12:44 |
Damir
Messages: 1005
Registered: May 2009
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Illuminati (2nd Degree) |
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Well, I`ll try (in GrupBuild forum) 2A3/6B4G SET amp project, it won`t be very soon, lot of experimentations are in order:-).
I`ll try several versions of PS, from really "budget" to say, LCLC with various rectifiers, but nothing complicated like regulated PS or so. Driver would be probably one-tube, CCS, maybe even choke load, I`d try various tubes, again - nothing complicated. OPT - I think that $125 LL1664 is the "top".
I`m really interested in finding simple, but good quality/good sounding SE amp... Then, 300B is in order:-). Stay tuned:-).
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| "Budget" SET=Milatary Intelligence [message #10992 is a reply to message #10990] |
Tue, 15 February 2005 18:01 |
PakProtector
Messages: 935
Registered: May 2009
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Illuminati (2nd Degree) |
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existing only on paper... SET is not like PP in a few ways. One is the means of dealing with the idle current. The 45, 2A3 and 300B can all run on a plate load of 4k. Idle current differs by a factor of two. Minimum primary L requirement at power is still the same, yet one will have to deal with twice the DC. With PP, if the a-a load is right, and you don't overheat things with too much idle DC, you'll be fine if you can keep the two halves balanced. regards,
Douglas
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