I have spoken to Rich Murray about restoring a pair of Calipers. New bass panels and tweeter ribbons. I inguired about upgrading the crossover to Signature status also. Price about 2 years ago without shipping was $7200.00. About $1400 less if you don’t upgrade the crossovers.
Shipping was expensive and requires custom built crates so they arrive back to you in working order as the original boxes are inadequate. Or you can drop them off and pick them up if a road trip works for you.
The expense is having an installer put in the bass panels that are sourced from Graz in Australia and sent direct to the installers. They won’t ship them to you direct any longer, forcing you to get them redone by an authorized installer.
There is a company that makes Apogee clones, called Clarysis Audio. On the web page is a link to Apogee ribbons which they manufacture AND are sold direct to the consumer. Prices are essentially the same as Gratz’s prices so if you want to restore them yourself, you now can. They also link you to Apogee videos on how to install the ribbons. Though full of them I thought and they also have a PDF on how to tune the panels all for free, file and videos.
I am now going to bite the bullet and redo my Calipers for a DIY project. Hope this information helps out a few looking to fix there ailing Apogees.