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More fun with magnets!

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Posted on April 25, 2021 at 07:15:17
Ric
Audiophile

Posts: 341
Joined: October 14, 2001
I had been looking at a review of the Ground Control from CAD audio and was intrigued by it being a passive device--no power cord! Yet, from the review it (of course) removes veils, lowers the sound floor and works.
Since I use a few of the cheaper (if you can call it that) High Fidelity Cables products and have used DIY magnets on my PC's, speaker, and IC's to great affect (cable deniers can stop reading here) I wondered whether some DIY magnets would work, similar to the Ground Control device mentioned above, which means plugging the DIY into an unused input on my integrated (or other)amp.
So I assembled an rca male end and attached a 1/2"x 1.25" cylinder type N52 magnet, one to the hot (positive) and one to the neutral (negative)using some cheap speaker wire. The way I attached the wire to the magnets is by using some #6-32x3/8" machine screws with the wire pinned and clamped down with two nuts (attached to the screw) and then a third nut on the end of the screw that sticks to the magnet.
I also housed the magnet into a piece of 1/2" pvc to insulate it from anything metal, as it's best to keep the magnets away from a metal surface.
So, if you have a cheap rca cord lying around, you will need 4 magnets (but just two will work). Cut the ends off of one end, separate the positive and negative wires, then attach those wires to the 6-32 nuts and machine screw and attach THAT to the encased magnet.
It is important to orient the magnets so the polarities are going in the same direction.
I was kind of blown away by the results--for those that do not want to work with live AC or mess with any other signal path, try these and report back! (look at my past postings for more magnet info).
PS. I mentioned using speaker wire, but I think if you have a cheap rca cable lying around, it would work just as well.

 

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Photos?, posted on April 25, 2021 at 10:35:32
Jon L
Audiophile

Posts: 5800
Joined: April 6, 2000
And what improvements do you hear?

 

RE: Photos?, posted on April 26, 2021 at 06:44:12
Ric
Audiophile

Posts: 341
Joined: October 14, 2001
I can try and do some photos if you're interested.
As far as sound improvement, to my ears and my system, it's big. When I tried this tweak, I had sent off my Border Patrol dac to be upgraded and was listening to the stock dac in the Innuos Zen Mini. At first the (internal) dac sounded clean, but then I realized how flat it sounded, to the point of just wanting to listen to vinyl.
When I did the tweak, I noticed the dac sounded richer, fuller, and after the first evening I had wondered if it was just my imagination--wanting it to sound better--this is with two magnets(+&-) on only one rca input (not both). In the midst of listening the second night, it was clear that what I was hearing was a marked improvement, so I grabbed a few more magnets and added them to the other input (four magnets, two (+&-) for the left channel input, two for the right channel input.)
Wow! I hate to say it, but the dac is now sounding very close to the BP dac, not as good imaging, but from the magnet/unused input/tweak huge improvement. Fuller, richer, more dynamic, bass, soundstaging is bigger--just a huge improvement. With a good recording my jaw is dropping compared to how it was.
IMO this tweak is great because you use it on an unused input, there is very small risk, electrically, compared to using magnets on the power cord, which I do with success. Here's a link to the original post where he copied the High Fidelity MC-0.5's (which I own and use and recommend)

 

RE: More fun with magnets!, posted on April 26, 2021 at 09:06:28
Mike B.
Audiophile

Posts: 25492
Location: OR
Joined: September 27, 1999
Contributor
  Since:
September 1, 1999
I have done a lot of tweaking with magnets over the years. I need to give credit to Rick Schultz for the initial idea. I met him at the Show next to the high end show at CES. It was his first show there with his original company out of Canada.
I had a batch of custom made neodymium barrel shaped magnets with a hole running down the center big enough for a 12 gauge wire. I had them plated with silver rather than nickel.


 

RE: More fun with magnets!, posted on April 27, 2021 at 06:35:06
Ric
Audiophile

Posts: 341
Joined: October 14, 2001
Regarding the hole in the center. My experience is that the magnets need to be IN the signal path to be most effective. If you are running them THROUGH the center without the wire connected to the magnet, I'm not sure you would get much affect. Also, the magnets need to be pointing the same direction (negatives same side) and if the sound is diffuse, turn them around. Anyway, that's my experience!

 

RE: More fun with magnets!, posted on April 29, 2021 at 12:11:20
Mike B.
Audiophile

Posts: 25492
Location: OR
Joined: September 27, 1999
Contributor
  Since:
September 1, 1999
I started that way. I found it best for AC cords, Not small signal applications. YMMV.


 

Photos please.... n/t, posted on May 3, 2021 at 05:34:44
tweakmenow
Audiophile

Posts: 239
Location: East Coast USA
Joined: March 26, 2012
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