Ferrite beads should only be used on wires not carrying the audio signal, where you are filtering out unwanted noise.(If you use them at all) The reason that made these peoples systems sound bad is the same reason shielded cables sound bad. The audio signal is AC which generates a varying magnetic field around the conducting wires. If you attempt to collapse or restrict this field, you will influence the signal that is producing it. If you MUST shield your interconnects, then try using unshielded interconnect (30ga. solid) wire inside a MUCH oversize flex tube wrapped with appropriate shield material and a drain. Preferably, each wire + and - on each run will have separate shielded tubes as their fields also interact, especially when buched right next to each other as in a standard interconnect. Standard interconnect topology is designed for convenience, not sound, even though high end mfrs. would have you think otherwise. Use tube at least 1 inch diameter with teflon discs to center the wire in the tube. Be sure to connect the shield to one RCA plug end only , as a drain.Or drain directly to a chassis mount lug. The dynamics will stun you.
Use of Ferrite Cores for EMI Reduction???
I've been doing a lot of research on the net lately about the use of Ferrite Cores to reduce ElectroMagnetic Interference (Yes, I are an engineer). It started when I bought a digital camera and there was a Ferrite Core at each end of the USB Cable AND one at the end of the power supply going into the Camera. The directions said that it was for noise reduction through those 2 cables! So I thought, HEY, I have cables in my Audio System...
This really got me thinking about the use of Ferrite Cores to significantly reduce the influence of any stray EMI that could be degrading the sound quality. Does anyone have an idea of this would help, OR does the EM shielding that already comes with most cables do the trick?
Any hardcore Electrical Engineering input would be GREATLY appreciated. Am I on to something worth trying, or just full of bunk??
This really got me thinking about the use of Ferrite Cores to significantly reduce the influence of any stray EMI that could be degrading the sound quality. Does anyone have an idea of this would help, OR does the EM shielding that already comes with most cables do the trick?
Any hardcore Electrical Engineering input would be GREATLY appreciated. Am I on to something worth trying, or just full of bunk??
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- 20 posts total
- 20 posts total