Excellent idea to pass the crossovers through like that!
My mid domes are 2" Philips AD02110/SQ8 that were installed in the cabinets when I bought them. I didn't know enough at the time to realize they were replacements! I found the specs online and they are flat from 500~5kHz but never found specs for the original Peerless made mid domes so I can't compare. Anyway, they sound excellent and it's cost prohibitive to replace them all. It is odd that the Philips drivers were produced at roughly the same time as the Quantums.
My mid domes are 2" Philips AD02110/SQ8 that were installed in the cabinets when I bought them. I didn't know enough at the time to realize they were replacements! I found the specs online and they are flat from 500~5kHz but never found specs for the original Peerless made mid domes so I can't compare. Anyway, they sound excellent and it's cost prohibitive to replace them all. It is odd that the Philips drivers were produced at roughly the same time as the Quantums.