Paul Joppa
Moderator
While we're at it, did the jumper solve the hum problem? I know, two things at once is confusing, but it's less long-winded. :^)
[This was the 10000uF cap from kreg to -reg] Yes it does. Let me clarify: many people (including the Bottlehead team) find that a normal cathode bypass capacitor slightly degrades the sound relative to no capacitor. Presumably this has to do with the signal current that flows through the capacitor. In the case of bypassing the 431, the regulator chip has a very low AC impedance (unlike the normal situation where a resistor is bypassed) so the signal current through the capacitor is reduced. So when I agree it has the potential, I mean I don't know whether there is a residual loss or not. At this level of resolution, calculations of current are IMHO not going to predict the subjective effect; only careful listening can do this. Of course it will be confounded with the reduced noise - but at least that's the realistic choice - does it sound better with the cap or without? Results are likely to be different with different speakers as well.johnsonad said:... For the team, does this mod have a potential to adversely effect the sound?
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