2275: main filter cap bypass caps?

[ssouci]

I've noticed mentions about a very effective modification of adding "bypass caps" in parallel with the main filter caps... apparently it will improve the highs

A) would this be a good idea for a 2275?

B) what is the recommended value & type for a 2275? (better still, a Digikey PN for a good choice)

C) are there any tricks to installing these? do I have to be worried about polarity?

PS: I will be installing new main filter caps, Panasonic ECE-P1KA153HA, with lead spacing = 0.984" (25.00mm)


thx!

 

[Bob91343]

I never put them in my 2275 but I suppose it's a harmless thing. The parts you add won't have polarity so not a concern.

The highs are already pretty good in that unit so you probably won't see any improvement. The way to find out is to run a response curve at full output. Most program material contains very little energy in the highest frequencies.

 

[xoaphexox]

These would be what I would probably use:

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=PF2155-ND

I have read to use a value about 1/10,000 of the value of the cap you are bypassing, thus making this one 1.5uF