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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: RE: Valve preamplifier biasing posted by Tre' on February 26, 2021 at 13:02:27:
Some folks say F3 needs be a decade (2 Hz.) away from the passband, while other people think 2 octaves (5 Hz.) away is OK. That makes the absolute minimum value for working into that blasted IHF "standard" 10 Kohm load 3.3 μF.
My price/performance suggestion is a 4.7 μF. metalized polypropylene part bypassed by a 0.47 μF. 716P "orange drop". An improvement is a 0.33 μF. PPFX Multi-Cap as the bypass, but costs escalate.
Eli D.
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Follow Ups
- RE: Valve preamplifier biasing - Eli Duttman 19:18:27 02/26/21 (2)
- RE: Valve preamplifier biasing - Tre' 19:44:38 02/26/21 (1)
- RE: Valve preamplifier biasing - PakProtector 04:45:07 02/27/21 (0)
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