In Reply to: Increase L in pi network posted by Sidewinder on September 22, 2017 at 00:15:20:
Do you have too much B+ ripple?
Typically you want just enough filtering to make an amp acceptably quiet. If it is quiet, adding more filtering is not usually good for sonics. If you are using high quality caps and chokes, bigger ones are way more expensive.
If you have hum, most of the time it is not from the B+ rail unless you are using a poorly designed filter.
FWIW, A filter of 40uf-4H-40uf-4H-40uF @ 100mA to 200mA will be quiet and good sounding. You can get reasonably priced 300mA rated chokes that will be mechanically quiet as well. For highish current power supplies, high inductance chokes are not always better sounding.
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Follow Ups
- RE: Increase L in pi network - Chip647 05:43:42 09/22/17 (2)
- RE: Increase L in pi network - Sidewinder 17:43:21 09/22/17 (1)
- No, there are ways to improve sonics - Chip647 06:35:08 09/23/17 (0)