DIY surround-sound headphones

Want the full surround sound experience but don't want your roommates to start complaining about the rattling walls?
You could spend $99 on a pair of surround sound headphones like the
I/OMagic Sound Assault, or if you've got a little time
(well, more than a little) on your hands and know your way around sound equipment, you could mod a pair of old phones like Joshua Driggs — aka ZapWizard — did. Of course, he started with a set of studio-quality AKG phones. You wouldn't want to try this with a set of Coby earbuds.

[Via Red Ferret]