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Re: A couple of questions for all you CD demagnetists out there.

Thanks for the feedback and info. Nice to discuss this subject intelligently.

My pleasure.

Concur 100% with the statement that aluminum is paramagnetic and no need to demagnetize it.

Yes. Basically, paramagnetic materials demagnetize themselves by way of extant thermal energy which keeps electron spins randomized. Even ferromagnetic materials become paramagnetic above their Curie temperatures.

I went to an audio club meeting here in Japan. There was a CD degausing machine. Put the CD in the machine and a green light comes on. Push a button and the green light goes off after the degauss. Flip the CD and repeat until thoroughly happy.

A few folks agreed that the CD sounded better after. I wasn't one of them.

I saw another fellow put a CD in the machine but never push the magic button. Every few minutes he'd flip the cd but he never pushed the magic button.

When the CD was played there was some general ooohing and aaahing and talk of how much better it sounded. I got a big kick out of that.

Oh, that was you? I recall reading that somewhere and was reminded of it when reading this thread but I couldn't remember where the hell I'd seen it.

I've done similar things intentionally and it provides a good example of the indesputable fact that psychology can play a significant role in our subjective perceptions. And until the psychology can be separated out, sitting around spinning theories in the physical domain is little more than mental masturbation. It can be fun, but doesn't produce anything useful. :)

I'll still stand by my statements that I don't think alum foil will strip electons off a cd and if it did they'll almost certainly get replaced either by handling or through rotation in the CD player.

Actually removing a piece of aluminum foil placed on a CD would leave the CD with a negative charge. Polycarbonate is below aluminum in the triboelectric series so a separation of the two would result in the CD pulling electrons off the foil leaving the CD charged negative and the foil charged positive.

se





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