I thought all pc speakers were Magnetically shielded Please help

[rlemmon]

Hi. I am just about done with my new cab. I hooked up the pc to play test. And as soon as I plugged in the speakers my screen starts vibrating and getting pink and green spots. I used pc speakers placed below the marquee. I thought that all pc speakers were magnetically shielded. Am I wrong? Maybe I just bought crappy speakers. They were half price at staples.
Any info would be greatly appreciated. Thanks,
Ron   

[USSEnterprise]

I have a set of speakers that attach right on my PC monitor with no problem. Are you using an arcade monitor or a PC monitor. If an arcade monitor, you may need to by a degaussing coil to get rid of those spots on the screen. Yoyu can get em at radioshack

[fiscap]

I'm not sure if you are talking about raw drivers or if you have speakers that are in enclosures, but magnetically shielded speakers are typically shielded by applying a second "bucking" magnet to the back of the driver to counter the magnetic field of the voice coil magnet. Both magnets are usually covered with a ferrous cap to further direct the field.

If you can see the back of your drivers and there is a raw magnet visible, chances are they are not magnetically shielded. The probability of permanent damage to your display is slim as long as the

[rlemmon]

hi they are regular pc speakers im going to go find differnt ones today,
thanks ron