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magnetic shielding...how important is it?

how important is magnetic shielding of speakers to protect, say an ipod or a cell phone that is carelessly placed atop them?

am putting together an ipod-based bedroom system that will consist of a pair of small monitors flanking a wadia powedac/itransport on my bedroom dresser. if the speakers are within a foot or two of the wadia on either side do I need to worry about them damaging my ipod (120g classic, so not solid state) if they are not magnetically shielded? what about a blackberry haphazzardly tossed next to the speakers?

anyone have any thoughts that could weight in? or horror stories they could share that might save me the same fate? thanks!
wrtickle

Showing 2 responses by elizabeth

elizabeth
6,726 posts
 
You do not need to worry.
The worst interference of speakers with a CRT based television was because the gun inside the CRT based TV was dirested by magnets, and any magnetic field nearby would be enough to cause havoc with the beam accuracy. No such problem with any other technology, except perhaps a boy scout compass.
You stuff is safe. The magnets in the speakers are not going to mess up your stuff.
You would have to take the driver out of the cabinet and stick you hard drive directly on the magnet to get it to be a problem.
elizabeth
6,726 posts
 
The tiny extremely powerful magnets INSIDE every hard drive (take one apart and find out for yourself) are in there. They are doing what they do to allow the precise alignment of the wand that moves around on the disks. then you got the motor, another bunch of electromagnets under the disk, that spin the disk or disks. That outside magnet does not stand a chance. If you waved a very powerful magnet on the body of the hard drive, it might havs a small effect. The magnets inside any speaker are way too far away, and too weak to worry about. Irregardless of the worrying Hifihvn is doing. LOL! trust me.
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