I don't see a section specifically for speakers so forgive me if this is in the wrong place. I just want to recommend South Florida Speaker Repair
http://www.speakersaver.com/ to anyone who needs repairs in the area.
I had my Eminence dual concentric driver (custom made for Ampeg) reconed by them, and what an excellent job. The materials are an exact match, it was done in less than a week, and only cost about $64.