crossover construction

Discussion in 'Archived Threads 2001-2004' started by Ron D Core, Apr 1, 2002.

  1. Ron D Core

    Ron D Core Stunt Coordinator

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    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.
     
  2. Patrick Sun

    Patrick Sun Moderator
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    Iron core should be used for low frequency filters, perhaps under 700Hz, because of saturation effects that color the sounds in the midrange, mainly vocals. Air core inductors are better for filters in the midrange where vocals predominate. Foil inductors are "cleaner" sounding, but have a higher cost to them.

    Also, the DCR (DC Resistance) of inductors should be as low as possible within your budget because higher DCR would act to rob the power transferred to the woofer/midwoofers, which lowers their efficiency/sensitivity.

    Either will work for extensions of components (multi-strand vs. single solid core).
     
  3. Brian Bunge

    Brian Bunge Producer

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    Just to add to what Pat said, I prefer point to point wiring whenever possible. I usually glue the components down to a piece of masonite board using some Liquid Nails for Projects. But if you like the fumes then go ahead with the regular Liquid Nails! [​IMG]
    Brian
     
  4. Hank Frankenberg

    Hank Frankenberg Cinematographer

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    What Patrick said and note that when a crossover designer uses a particular inductor, he/she takes the DCR of that particular inductor into account in the circuit calculations, so if it's a well-done, exacting, "high-quality" design, you can't just substitute another inductor type because it will most likely have a different DCR.
    Also, like Brian, if there is no circuit board provided, I use Masonite pegboard, ala the North Creek Music method. Actually, their 12-page booklet, The North Creek Wiring Guide, is well worth the price: http://www.northcreekmusic.com/Publications.html
     

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