I swapped out the cross-overs in my Forte I's a few weeks ago. X-overs were attached to the speaker terminal cup. Had to remove them and then attach the great-big new Crites x-overs to the reinforcing brace. Took a little bit of work, but definitely worth it!

I'd love to operate on my M80s and improve the sound quality.

Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.