Jason Bloom (R.I.P) was a brilliant speaker designer.correction here - It was Jason Bloom's (RIP) father-in-law Leo Spiegel (RIP) who was the real speaker designer. Leo S worked for NASA & had experience working with foil materials & conceived the idea of a ribbon speaker. Jason did all the marketing & the shows & I'm sure he dabbled in speaker design but i believe that he left most of the work to his father-in-law....
Sorry, OP, can't help you with your Stages since i don't own a pair but I'd fix them & keep them....