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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Found it: posted by hans on April 13, 2000 at 00:41:43:
Yas, it is the lack of "switching nasties" (back current before switching) that is good with hexfred (and diode och full wave valves, not mercury though). That is why caps across the diodes helps. Who needs to be fast at 50-60p/s?
One difference btw valves and sand is that valves have quite a voltage drop when the current rises (drop as a close to linear function of durrent). So valves does introduce a sound, but as valves are mainly for valve amps, and valve amps usualy runs class a coz valve users care about sound, and as class a amps uses more or less a constant current (with active load / regulation / linear PP it is a constant current) it doesn't really matters. But for an AB amp it is a completly different matter... [PSU is also a bit easier to filter with sand compared to valve rectification, as valve rect. don't like large caps but rather chokes (but they also have a appealing sound).]
/Pär
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Follow Ups
- Re: Found it: - Pär 04:57:56 04/13/00 (1)
- Re: Found it: - hans 06:17:41 04/13/00 (0)
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