Are there any tricks or important things to know when building a set of crossovers without a pc board? Should the components just be soldered by the wires coming off of them, and if they arent long enough, what type of wire should be used to connect them? Ive heard different things from many poeple, some say solid high grade copper wire is fine and others say to use a high quality multi-stranded speaker wire like Kimber Kable. Is there some reason one should use iron core inuductors over air, and what are the advantages of using foil inductors? Thanks a bunch.