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In Reply to: are the struts in front too? posted by mart on February 10, 2002 at 07:49:29:
20 has preforated metal plate on back. Since it is a push-pull design, I guess it should have prefortated metal plate on front side as well. However, I can't see it on front without opening the sock. For on midrange area, my best guess is it has metal preforated plate on both sides but magnets on back side only.
You have the acoustic chamber sonic character added to the midrange with the added steel, but without the magnet's structural vertical rigidity & improved dynamics. Damn, I'm glad that Magnepan went to a MG20.1 with a push-pull midrange. I just assumed that the steel stopped in front of the MG20 to let the sound through unimcumbered.
» moderate Mart £ «
on 20, midrange is quasi-ribbon with magnets on back side only. On the front, the preforated metal plate doesn't cover midrange area. It has about 3x4 openings over the midrange area from top to bottom. I looked really hard this time with a flash light.
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