I don't recall if they say on them but I'm 99% sure they are 4 ohm (I've replaced mine). If you replace them get ones that have high SPL ratings. Door subs are dual voice coil 4 ohm. Here's a post I did on the speakers back a while ago. http://www.svtperformance.com/forum...ing-both-door-speakers-shaker-pro-system.html
