Video shielding for rear projection TVs?

I am thinking about buying a widescreen set, but room constraints will dictate that my speakers be pretty close to the set. I have a standard, tube set right now, and putting the speakers any less than a foot away causes problems. If I leave the speakers where they are, and put the projection set in the old TV's place, the new set will be about 4 inches away from the speakers. Is the effect of unshielded speakers (I have Paradigm reference 100s) different for tube and rear projection sets? Thanks in advance for any advice.