Follow the link below to view the Altec Lansing N1500A Series type crossover designed for the famous Altec Lansing 604E Duplex driver (42kb in PDF format)

 

Some values are a bit hard to read so I've also listed them here:

R1   15 Ohm 10W

R2   25 Ohm

C1   14uf

C2    3uf

L1   1.5 mH