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In Reply to: RE: Free Black Discs posted by SgreenP@MSN.com on May 11, 2014 at 19:30:41
been doing it for a while now, but being a dealer couldn't very well blow the whistle. I believe Bob is recommending it too on his website and has sourced some circular neodymium stuff
Edits: 05/11/14Follow Ups:
Here is a link to more information (blog post) about magnets on black discus
http://blackdiscus.blogspot.com/2014/05/blackdiscus-and-magnets.html
Before I go and do something silly...
"Magnets on BlackDiscus
==================
I've been doing some experiments with magnets and BlackDiscus. Not sure if any products will come out of this yet, but it does open up a very easy way of experimenting and possibly enhancing your BlackDiscus (real ones or samples).
All you need to do is to put a magnet on top and listen. Doesn't really matter what type of magnet - you could use small neodymium magnets, or even fridge magnets.
Now I don't have the gear to be able to analyze in detail why this effect occurs. But my best guess is this the magnet biases the magnetic domains in the BlackDiscus. This means that the small field variations caused by nearby currents, etc, are swamped by the magnet's field. This means that the direction (N-S) of the field does not 'flip' to (S-N). The region around the zero cross or 'flip' is non-linear - this is the same sort of reason that bias is used in tape recording heads.
The effect you get is quite variable- sometimes it makes the BlackDiscus much better, improving just about everything and audibly lowering the noise floor. Sometimes it makes things sound terrible.. put magnets too near to varying currents (or transformers) and they start to wobble - then it's anyone's guess. But it's worth a little time experimenting - you may be able to get a big performance improvement for almost nothing!"
"Once this was all Black Plasma and Imagination" - Michael McClure
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