Adding power-supply chokes to gear possible?


Hello. I am curious as to if it would be foremost possible, and secondly advisable, to add power supply chokes, ala the newer Musical Fidelity products, to other brands of gear not so equipted originally? I have been very impressed with the uncanny quietness of the MF amps and preamps and am now curious as to if adding chokes to my other gear, expecially at the digital end, would be a worthwile project. Thanks much for any insight!
socrates

Showing 2 responses by sean

You have to be VERY careful doing something like this. It would be easy to literally "choke" the power supply into starving itself, especially on power amps. You might want to check into Jon Risch's PLC as it uses a good sized "choke" or inductor in its' design. It still might not be enough to handle a good sized amp.

Another alternative is to try the Richard Gray Power Company "doo-hickie". It is nothing more than a giant inductor as far as i know. Adding an isolation transformer should do even more for you than adding a choke as the transformer is not only an inductor, it also electrically isolates the device from the line. Just like any other choke, you have to make sure that you aren't going to be current limited in ANY way, shape or form though. Sean
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The choke is used to shunt high frequency noise and minimize ripple on the line. There are other ways to do this but Jcbtubes is correct in stating that such an internal modification would require forethought and care in both selecting the parts and how it was implimented. Almost anything is possible if you want to spend the money to do it. Sean
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