I often hear about Orange County, but have never had anything done by them.
About a year and a half ago, I had a 421A rebuilt by Great Plains Audio. I found them to be great to work with and did an excellent job. I normally use The Speaker Doctor in Charlotte, but he does not do the magnet recharge nor have good access to the smaller 2 1/2 " aluminum dust cap used on the Altecs. The Great Plains folks are former employees of Altec/Lansing and have original stuff for them and JBL. My bill was $136.70 including shipping to North Carolina. When I have my D140Fs done for my Bassman cab, that's where they'll be going. The Altecs are super speakers. Hope it works out for you.
