Technical and scientific discussion of amps, cables and other topics.
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So what's the deal with CD demagnetizers?
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Posted on November 8, 2015 at 14:55:08 | ||
What's the deal with CD demagnetizers? OK, I've got an innocent question. How do CD magnetizers work? I'm a little dissatisfied with reviewers' or anyone's ubiquitous comment, "I have no idea how it works but works it does." Whether it's the Radio Shack bulk tape eraser, the Walker Audio Talisman, or another demagnetizer, pretty sure Furutech sells them, too, what's the mechanism for how they work? So, anyway, we all know that demagnetizing CD prior to play does improve the sound. If you haven't tried it trust me it works. But the closer you look at this phenomenon the more mysterious it becomes. The main question I have is even if there is some magnetic materials in the CD, you know, in the ink used for the CD label graphics or in the metal layer, surely the magnetic field arising there from must certainly be very very small, given that the ferrous impurities would by necessity be perhaps what less than 0.001 % of the material? But for the sake of argument let's say there is SOME (extremely minor) magnetic field in the material of the CD resulting from the ink and/or the metal layer, why would that mag field hurt the sound? And by the same token why would demagnetizing the CD improve the sound? One assumes the magnetic field builds back up over time since the demagnetizers must be employed on the CD every so often. Even assuming some small magnetic field, any magnetic field, associated with the CD how would that affect the sound one way or the other? Anyone have any insights? Geoff Kait |
RE: How about encasing the mechanism?, posted on October 22, 2016 at 09:33:44 | |
Always nice to hear from the hoi polloi. Sorry to hear of your non success with tweaks. Thats a shame. |
RE: What the..., posted on January 18, 2017 at 15:28:22 | |
That's what everybody says. |
Another thing you left out BC , posted on June 18, 2017 at 16:50:22 | |
You didn't try it. |
RE: easy to prove one way or the other, posted on May 15, 2018 at 06:56:46 | |
Why bother believing your own ears. Just foam on. |
RE: How about encasing the mechanism?, posted on May 28, 2020 at 21:09:22 | |
Posts: 22597
Location: SoCal Joined: October 19, 2008 |
Mu Metal Too much is never enough |
RE: I hear substantial benefits from lifting the cables off the floor, posted on October 8, 2020 at 06:40:48 | |
Who's Eddy? |
RE: So what's the deal with CD demagnetizers?, posted on March 23, 2022 at 12:10:24 | |
I'll be sure and not let anyone tell me otherwise. By the way, didn't you know you can't prove a negative? |
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