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Mounting Drivers front vs back side of baffle?

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  • #16
    Originally posted by Chris Roemer View Post
    The way I see it, IF you COULD mount a driver (a woofer, let's say) that was completely decoupled from the box (baffle), then when the V.C. got energized, there'd have to be SOME kind of distortion introduced - 'cause the V.C./cone would be moving somewhat, but the driver frame would also end up moving SOME (one of Newton's Laws of Motion - no?). The cone would not be moving the "designed" amount of air molecules, would it? Now, I DO believe that decoupling a tweeter could be beneficial, provided that the woofer was making the tweeter's mounting vibrate (which SEEMs like it could introduce some kind of H.D. or I.M. distortion).
    Exactly right. The ideal baffle would be one of infinite mass. Decoupling defeats the purpose. What you want is a baffle that doesn't vibrate and offers high inertia.
    R = h/(2*pi*m*c) and don't you forget it! || Periodic Table as redrawn by Marshall Freerks and Ignatius Schumacher || King Crimson Radio

    Byzantium Project & Build Thread || MiniByzy Build Thread || 3 x Peerless 850439 HDS 3-way || 8" 2-way - RS28A/B&C8BG51


    95% of Climate Models Agree: The Observations Must be Wrong

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    • #17
      http://www.linkwitzlab.com/Driver%20Decoupling.doc

      Linkwitz indicates that a decoupled magnet system is actually better behaved as a ground reference for driver motion. Incidentally, KEF, NAIM, and others have all utilized decoupled drivers in various models, what the commercial utilization indicates (gimmick or legit) is another issue, but Linkwitz is generally a pretty respectable source for this kind of thing.

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      • #18
        Originally posted by badman View Post
        http://www.linkwitzlab.com/Driver%20Decoupling.doc

        Linkwitz indicates that a decoupled magnet system is actually better behaved as a ground reference for driver motion. Incidentally, KEF, NAIM, and others have all utilized decoupled drivers in various models, what the commercial utilization indicates (gimmick or legit) is another issue, but Linkwitz is generally a pretty respectable source for this kind of thing.
        ​Interesting article, the conclusion surely seems to indicate that decoupling definitely has merit. Thank you for the link.

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        • #19
          Seems that the driver basket was acting like a bell when the flange was rigidly mounted. Perhaps a saddle for the magnet would do the trick and help dampen the ringing.

          Then again, maybe all they did was confirm that decoupling works well for stamped frame shortcomings.
          R = h/(2*pi*m*c) and don't you forget it! || Periodic Table as redrawn by Marshall Freerks and Ignatius Schumacher || King Crimson Radio

          Byzantium Project & Build Thread || MiniByzy Build Thread || 3 x Peerless 850439 HDS 3-way || 8" 2-way - RS28A/B&C8BG51


          95% of Climate Models Agree: The Observations Must be Wrong

          Comment

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