Finally finished restoring the Quartz speakers and figured I'd post some pics as there's little information on the web about them.
I updated the crossovers with larger coils and caps so I decided to mount them on the back of the speakers.
The Quartzs are now living in my classroom which I can safely say has the best sound at the school.
Original crossover and variovent.
Defoamed and emptied enclosure.
New crossover mounted on the back of the cabinet.