glasseater,

RPTVs quite aren't as susceptible to magnetic interference as direct-view CRT TVs because RPTV tubes are generally located at the bottom of the cabinet. But to answer your question more definitively I need to know what kind of speakers you have now and how you would like to (ideally) position them next to the TV.

If you have towers, then the woofers may indeed interfere with the picture tubes. If you have bookshelves, then you shouldn't have any problems.