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Discussion in 'Speakers' started by Chris Bates, Oct 26, 2003.
Other than purchasing shielded speakers, how would one magnetically shield a speaker cabinet?
You cant really. You need a bucking magnet on the back of each driver. I have no idea where to get one other than to buy a new sheided driver to replace the old one.
I'd say it's possible to pull off since I've heard of custom audio designers doing it in subwoofers and such.
You first need to find some fairly thin sheet metal that has iron in it. This means it has to be ferromagnetic which means a magnet must stick to it and the surface may rust over time.
This acts as a barrier to the magnet if you place this ferromagnetic sheet away from the magnet like lining the cabinet walls.
There are also donut shaped magnets called bucking magnets that get glued to the back of the driver to help "cancel" and shield the driver. Parts Express sells them for like less than a buck.