Crossover issues?

I have a set of JL components in the front of my vehicle. Recently I installed a new amp and fixed some shorted out speaker wire. With the new amp hooked up I am only getting sound out of the woofer with highs coming through it. Everything is hooked up properly, I was wondering if a short could have caused the crossovers or tweeters to fail because with the same settings on the amp and deck for the rear, the rear speakers are working superb? Any suggestions would be very helpful Thanks