The speaker was tacked welded into that “C” piece which was then tacked to the 3 posts piece. I used a air hand grinder to break all the weld points to separate everything. I wanted to keep those three posts for I could somehow affix the new speaker to that part. I already have a really nice 4″ speaker but it’s design is much newer where the magnet is much larger on the back. I think it might still work if I chop off the top part of that “C” piece. We will see at a later time how that might work out. I did place the new speaker in its mountain area and it seems like it will fit well.