yank the screen off that bitch and look to see if the cone has a tear, hole, or blister in it.

No tears or anything on the cone. Anything else I should look for?

actually, yeah the cone in torn. I dunno why i didnt see it at first :( . Guess I gotta get a new driver. My question now is shouldnt the horn still be working?

not necessarily.

Temporally by bass the crossover circuitry by running the woofer's leads to the input source at the back of the box, play something very low volume, repeat with tweeter and mids (if applicable)

If you get any undistorted sound out of the speaker(s) I'd highly suspect you blew out something in the cross over circuitry, perhaps a resistor or capacitor.

Just make sure you run a very low level signal will testing the speakers so you don't fully blow the shit.

Blown woofers can sometimes be hard to diagnose, because more often than not the coil (at the base of the cone) will seize up, literally melts/ fuses it's self to the magnet via overheating. < in that case check to see if the woofer cone can move freely (laterally)back & forth.

Yet again, the force and vibration of over powering a speaker, can sheer off the leads from the speakers frame that connect to the coil in the cone, running a 9V battery at that point can reveal if the speaker still has continuity.

do you people ever actually read before you post?

Actually I did read I just didnt notice the tear in the cone...

Anyway, what I did was hook one of my house speaker's woofers up to the crossover to see what would happen. The got some sound out of the subwoofer but it was fullrange sound (i could hear bass and the words). But I got no sound from the horn. Does this mean that the crossover is bad AND the horn is blown?

^^^^^ Now do the test with the horn leads to see if it's fact working.