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RE: Choke power supplys in Comp Symmetry BJT power amps

Posted by kurt s (A) on August 22, 2011 at 02:43:43

In Reply to: RE: Choke power supplys in Comp Symmetry BJT power amps posted by Charles Hansen on August 19, 2011 at 17:07:01:

"Please also note that there is a BIG difference between a true choke-input power supply and a power supply with a choke. The latter is more of a gimmick, created largely to give the marketing department something to spin."


This is truer for a lower impedance high capacitance PS for SS and OTL amps. For high impedance amps, OPT style tube amps, the CLC filtered L component is much more useful: smaller lower current chokes, a higher order and more complete filter for 100-120 Hz as especially SET amps have poor PSRR. Less important always with balanced design.

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