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Bucking magnets on speakers in cabs with arcade monitors

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divemaster127:

I have a 27" betson mutisync its a good monitor, & i have always had a green distortion in the upper corner close to my speakers, im using the 2.1 creative speaker hack & running sony explod speakers, i used someone suggestion to put bucking magnets on the back of my speakers(these are already shielded speakers) & it fixed my colors problems, just thought i would share this
thanks
divemaster

CJK:

Out of curiosity, where did you get the bucking magnets? I'm planning to run the same setup in my cabinet, and I had just about abandoned the car speakers idea because of the shielding issue.

Thanks!
-- Chris

ShinAce:

You take an old speaker you don't want, and then cut off the frame using a hacksaw. Hopefully the scrap magnet is smaller yet almost the same size as the good speaker.

The only problem is attaching the bucking magnet, since the 2 will want to repel each other like there is no tomorrow. And you don't want to be putting forces on the speaker's frame, you could distort it. I imagine a good layer of epoxy could do the job.

Something I've always want to try is this. Transformers use a magnet friendly material, ferrite. Take a Xformer apart and you'll see it uses several plates of ferrite to make the core. Get that ferrite core out, and now split the layers apart. The whole thing is likely enameled over, so it won't be fun, or easy. Once you're done, you'll get at least a square foot of 'shielding material', since the ferrite shunts the magnetic field onto itself. It sounds great in theory, but I just haven't had a need to try this yet.

divemaster127:

Here is the link where i purchased these they are .88 each & i glued them on the back no problem, www.partsexpress.com
thanks
divemaster

ShinAce:

You might want to tell us what to looks for. Parts Express is a big site.

http://www.partsexpress.com/webpage.cfm?webpage_id=3&SO=2&&DID=7&CATID=45&ObjectGroup_ID=571&filter=ferrite

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