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Metal Core Inductor spacing

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  • Metal Core Inductor spacing

    I know the rule of thumb for air core inductors is 2". What's the distance required for metal core inductors?

    I'm putting together a pair of Continuum IIs and I've got an equivalent baffle/volume curved cabinet, so the crossover space is limited. Right now, I've got the metal core inductors running longways front to back, w/ about 2" from the woofer magnet, 2" from each other, and 2" each from the air core inductor. The air core is laying flat, so I'm not worried about that one too much. If I have to revise, I want to do it now.

  • #2
    The spacing is less important than not having them on the same plane. http://www.troelsgravesen.dk/coils.htm
    www.billfitzmaurice.com
    www.billfitzmaurice.info/forum

    Comment


    • #3
      If you could make a drawing of them, that would help. Here's some food for thought- don't point the steel-laminate coils at any other coil, and keep them proper to each other, IE- parallel planes, but right-angled coil rotation, or on adjacent sides of a square in same mounting method. You do not want to see a coil by looking down the axis of another.

      Later,
      Wolf
      "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
      "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
      "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
      "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

      *InDIYana event website*

      Photobucket pages:
      http://photobucket.com/Wolf-Speakers_and_more

      My blog/writeups/thoughts here at PE:
      http://techtalk.parts-express.com/blog.php?u=4102

      Comment


      • #4
        I should be able to take a picture of the relative layout of the pieces later tonight and upload it.

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        • #5
          As is usual, life had gotten in the way, but here's the picture (finally). How does the inductor spacing look?

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          • #6
            You'll be fine.

            That's a really hi-res pic. I can see the ink-jet "dots" on the 5n & 8n LYNK resistors !

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            • #7
              Below is the gist of Bill's link on inductor orientation. The ideal orientation is #6. My suggestion would be to move the air core inductor left in line with the "iron" in the left iron core inductor and rotate that left inductor 90o. Others may have a better alignment for you.

              Click image for larger version

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              • #8
                What I didn't mention is that the scribbled in corners on the lower part are going to be trimmed off to fit the cabinet and the top edge is almost in line with the rear of the woofer. So, I want to keep some distance from that magnet too.

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                • #9
                  I would run the right steel-core along the top-edge in the photo.
                  Something like below...
                  Wolf

                  Click image for larger version  Name:	image_88315.jpg Views:	0 Size:	372.3 KB ID:	1456573
                  "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
                  "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
                  "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
                  "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

                  *InDIYana event website*

                  Photobucket pages:
                  http://photobucket.com/Wolf-Speakers_and_more

                  My blog/writeups/thoughts here at PE:
                  http://techtalk.parts-express.com/blog.php?u=4102

                  Comment

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