Accuphase F-25 active crossover board mod help

Hello.

I recently got an F-25 and have had trouble getting the right crossoverboard.
Will use it to subwoofers at preferably 80 Hz (FB-70 board would be good enough).
Is there anyone who could help me out with the values needed.

Perhaps the service manual has the information. Would really like to get hold of it.

Thanks!
 
Hello from 2019 🙂

Anyone can explain whats the difference between the F-25 (produced early 90's) vs. F-25V (produced early 2000's) ?

Appears that the F-25V it's a upgraded version of the F-25, but I can't find the F-25V brochure.

Many thanks.