Best Capacitors for Crossovers

NIce. I like silver, and copper, but really not impressed by silver/copper for speakers.

Best,

Erik

"Lustformusic" gave you great information; and that design came courtesy of  GREG TIMBERS; a very senior speaker engineer/designer at JBL. A great guy responsible for some of JBL's greatest speakers. From personal experience I can say he is a exceptional gentleman who really cares about music reproduction and customer satisfaction.My hat remains off to Mr. Timbers.

NONE - go active crossover if you're a DIY guy. Because you CAN.

For wire I highly recommend a brand new affordable wire made by Duelund that copies and betters the wonderful NOS Western Electric copper stranded wire. Parts Connextion sells it for $10 a meter and it is very special. I have wired my complete system with the Western Electric NOS wire popularized by Jeff Day. This wire has caused many of us to sell of thousands of dollars worth of Aphile cable for better sound with the WE16 NOS cable. Well, the NOS WE16 wire is now gone and sold up! But Duelund has made a match that according to Jeff Day that is even a tad bit better. 

Forget all all you may have heard about stranded or tinned wire and buy some. I had to empty my brain of past experiences and reading on tinned and stranded wire, but when I opened my mind and heard this stuff I was taken back. So open and musical. You have to hear yourself to know. Check it out.