The stock WJ tweeters all went bad. Many guys unplug them.
Someone had replaced the front door speakers in my truck with some 3-way Pyle brand speakers, but through investigation I found that the factory system sent bass to the front speakers, highs and mids to the tweeters, and full range to the back door speakers. So I re-wired it to give me full range in the front door speakers and bass to the rear speakers (I switched the front door wiring to the back and vice versa) and left the tweeters unhooked. You'd never know they were supposed to be there as it sounds great now.
Just my 2 cents.
You can buy replacements but they'll go bad in the sun, too. :shrug:
1999 WJ - Over 10k on the 4.0 rebuild. FB/BDS 2" lift (2.5") w/Bilstein 5125's. General Class Ham...KC0LUA
Burlbook48 sez "Nothing moves a project along faster than cubic dollars." Certified Thread Killer.