I picked up a pair of Caliper - Signature for song in Seattle a few months back… I have owned and sold Apogee back in the day… i’ve got a lovely pair of Centaur- Minor in our den…. a very formidable ribbon… seductive..
The Caliper went to a dear friend in Marin… he has an accuphase amp…. fantastic sound.
Your wounded Caliper, especially the bass panel are worthy of selling for parts w care.
Best in music