i was formerly a car audio installer for 18 years,before i started doing home a/v.my 2003 tj had a blown sub which sounded crappy,so i pulled the console and disassembled it to investigate.the speaker is a dvc with two ohms per coil.having taken chances in the past with such things,i had some mb quart 6.5" mids and tweeters laying around,so i said what the heck-let's try it.i was able to fit the midrange driver in there rather nicely,and i only hooked up one pair of the factory wires to it,while covering the other pair with electrical tape to prevent shorting.yes,i am using the factory amp,and it sounds great!not earth-shattering bass,but a nice bottom end,and this mod cost me nothing but an hour of my time!so you can fit a standard speaker in there,and it will work just fine!hope this helps!