I don't think they are magnetically shielded. I've been looking around for more specs on the Logitech X530's and all have detailed info about it but nothing that says they are shielded. The Logitech 640 are magnetically shielded as stated at Logitech's website and others. Just try keeping the subwoofer away from the computer. Like Winterfresh, my PC is on a utility shelf and my sub is on the bottom of the desk.