Gonzo, I could use some tips on the recovering you mention. I have a pair of AMT-1's that I purchased while living in Sacramento back in the mid-eighty's. I refoamed the passives a few years ago and put them back in their original mfg. boxes. Not sure what the drivers might look like after all these years in storage. When I took them out to refoam the passives they looked pretty good. I noticed recently that Parts Express carries the OEM replacement drivers, passives and HEIL transformers for both the 10" and 12" AMT models (stamped ESS). Very reasonably priced as well. The covers on the AMT-1's I mention are fabric on all four sides and the top. The frames are some form of composite or plastic. It looks like keeping them "square" would be the challenge. Your comments and suggestions would be appreciated. Thanks. ScottHey, a big thanks to all that gave me the :thmbsp: on this project. I appreciate the comments. If there are any of you die-hard ESS AMT1 or AMT1x owners in need of a grille recover or refinishing tips, I'll be more than happy to assist you.. The older style grilles are a HUGE PITA to recover. The sequence is the key. I've done 3 pairs so far, with great results.