For anyone needing work on ADS drivers, I would recommend Mr. Richard So. I'm what you call a "3060 guy". I have sent him Two complete pairs of 1530's, drivers and crossovers. His work was done quick with top end results. I'm now hearing my 35 year old speakers in factory new condition.
Very nice. I have a pair of 1230s sitting in my cellar waiting to be put into a dedicated stereo set up. Have to remodel the house so can't bring them upstairs yet. I have a home theater with 5 L1290/2s, 4 towers and I built the center channel copying the one on Rich So's website. He rebuilt my entire rear channel surrounds, drivers and crossovers as well as a few tweeters and midrange domes on 3 other model ADS speakers. I just got 4 L300 mini monitors to put on my ceiling to switch over to Dolby Atmos. I will have Rich So swap out the copolymer tweeters with the same silk dome tweeters in the 1290/2s to keep the high end balanced. Rich is my hero. Carries the torch for us ADS fans.