Rather than pictures, generally more helpful to simply provide brand and model number of gear so we can look up specs/manuals etc.
The smaller driver in the center is the tweeter in that speaker, flanked by mid-woofers on the sides. I'd have expected if only tweeters are working for the sound to be other than "muffled", and rather bright/shrill, so not sure what you've got going there....but sounds like time for new speakers in any case.