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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Truth is ... posted by Naz on July 10, 2006 at 20:17:03:
in a heated triode-vs-pentode exchange here a couple of years ago. My points were:1. One of the ways to reduce distortion is to use the amp at a small fraction of its power. Can be easily done with pentode amps, and not so easily with triodes.
2. Pentodes are quite linear with Ug2
3. Triode sound is euphonic, but pentode sounds closer to reality. 3. Due to high plate resistance, some NFB is needed to reduce amplifier's Zout. I know that for many NFB sounds like obsenity, but it is my belief that 10-15 dB of NFB don't do much harm. Pentode amplifier can can work very well without NFB at all if it is used for midrange and highs only, preferably with a fast decay driver, like BG Neo-8.
Its a pity that the overwhelming majority here are so convinced in the superiority of triodes that they never bother to experiment with pentodes.
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Follow Ups
- I actually participated - sser2 14:44:23 07/11/06 (1)
- Sorry, it didn't go through - sser2 14:52:03 07/11/06 (0)
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