I have pulled down a pair of AR48s speakers due to cabinet damage and have saved these beautiful crossovers... Specs Below:-

Crossover Frequencies-400 Hz and 2500 Hz.
Cabinet Internal Volume-37.5 liters (1.32 cu. ft.).
Cabinet Dimensions-635 x 354 x 275 mm deep (25 x 13-15/16 x 10-13/16" deep)

I do have the reverse engineered schematics too...

For a small price, I can supply the drivers too, althought.... these NEED the SURROUND REPLACED