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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: Re: There are 3 kinds of passive preamps (at least) posted by Steve Eddy on February 22, 2003 at 21:11:01:
actually i have seen an instance or two where this is just the opposite.a guy on the joe the other day got substantially better LF response from a SE triode wired 6L6 driving a trannie originally designed for PP when he increased the DC from 10-40ma...
while the DC through the core will reduce the perm, it also makes the perm more linear, much like an airgap (gasp did i say that :-)
in a minimal airgapped high nickel core, i wouldn't be suprised if a slight dc offset didn't linearize the inductance considerably
dig through an old text and find a graph for various values of H showing B vs perm.
do note, i am referring to voltage delivery rather han power delivery...
dave
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Follow Ups
- Re: There are 3 kinds of passive preamps (at least) - dave slagle 05:38:09 02/23/03 (2)
- Re: There are 3 kinds of passive preamps (at least) - Steve Eddy 12:40:54 02/23/03 (1)
- Re: There are 3 kinds of passive preamps (at least) - dave slagle 19:26:47 02/23/03 (0)
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