Probably a silly question but with these switchmode powersupplies it would seem to make sense to add ferrite rings to the powercable but I don't see them nor see them discussed?
Anybody tried this?
frederic?
Just thought I'd ask before reinventing the wheel :)
improving?
Moderator: Staff
If the SMPS (switch mode power supply) is well constructed, you will only get a degradation by adding ferrites to the power cords. Every SMPS has filtering on the mains input, otherwise it would not pass the electrical emission regulations. Adding ferrites to the power cords is to add further filtering.
So far it has not been beneficial with Linn's SMPS's.
So far it has not been beneficial with Linn's SMPS's.
You can always try it. Get a bunch of power cords, check that they sound the same, cut them all in half and then resolder one without any ferrite, the second with one type of ferrite, the third with a different ferrite etc.
You will then have identical cables except for the different ferrites on them. Now compare these cables on different machines and take notes of how they sound.
If all power supplies involved really are optimised, it should be the same cable (the one without ferrite) that wins all the time. But if one power supply is not really optimal, it might improve with some additional filtering.
One drawback with this is that the ground conductor will not like the added filtering. Live and neutral is where it's needed.
You will then have identical cables except for the different ferrites on them. Now compare these cables on different machines and take notes of how they sound.
If all power supplies involved really are optimised, it should be the same cable (the one without ferrite) that wins all the time. But if one power supply is not really optimal, it might improve with some additional filtering.
One drawback with this is that the ground conductor will not like the added filtering. Live and neutral is where it's needed.
There are some ferrites that can clamp on a cable. I know that TDK used to sell some like this in the US. If you check around you will probably find some available. I don't know if they function exactly the same as the solid ones but they would allow you to check their effects without having to cut any cables. Just an idea.