[jon5544]

I built the Sapphire III 20+ years ago and need the crossover schematic to make repairs.
Any help is appreciated.

Thanks,

[borus]

ACI Sapphire III Crossover. The  one with focal woofer and tweeter?

[jon5544]

yes, the focal tweeter and focal kevlar woofer

[Mark Korda]

Hi Jon,
  I bet if you could post a picture of that crossover and state the exact model of the drivers someone out there might be able to reverse-engineer to find the missing whatever. It worked for me a while back as a fellow member figured out a coil value for me, the written value was cemented to the board, by looking at the picture I sent him.  I still have a couple nice color catalogs from ACI. I'll see if I can find any info for you.......Mark