About four years ago a lovely pair of MS 150s were given to me, they obviously needed reforming but I put them in my garage until I had room for them...
I finally got around to reforming them in the summer of 2018, and used the shimless method of centering the cones. It went well, but after a while I noticed that one speaker sounded different (did a bunch of troubleshooting to make sure it was the speaker) and recapped the crossover as part of troubleshooting. Eventually I just started piping stuff through my equalizer to get around the issue... until about a week ago when I stopped noticing an appreciable difference without the equalizer. Yesterday I noticed a distorted sound coming from the 8" woofer in one speaker (which from here on will be referred to as the right speaker). I isolated the issue to the speaker itself, which was most prominent on piano music. After putting the speaker on my workbench and trying to replicate the issue and failing, I put the second speaker right next to it and realized that the left speaker's tweeter seemed to have a much lower output and distorted.
So as it's sitting now, I have one bad 8" woofer, and one bad 3" midrange. The woofer I was going to send off to Parts Express's speaker repair center for reconing, but with a midrange now bad I'm not sure what do do.
