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Magnepan Mylar Repair

One of my MMGs has started doing the bass slap and I think the issue is the mylar has stretched.  I took off the sock and visually nothing looks wrong. Does anybody know how to re-tighten the mylar?  I contacted Magnepan and they are only doing warranty repairs for the foreseeable future. 
terrapin77
4 responses Add your response
mofimadness's avatar
mofimadness
4,982 posts
 
Very carefully with a hair dryer set on the lowest setting and moved around quickly.  Don't hold on the same spot for very long.

I've used this method on Maggies, Acoustats, Martin-Logan and Sound Lab speakers with excellent results.
terrapin77 OP
86 posts
 
@mofimadness Thanks for the info!  Use the hair dryer on the whole mylar or just the area that's slapping? And overall, how long should I run the hair dryer?  
johnto
1,023 posts
 
Never done it myself but there's lots of good info on other forums (audio asylum and audiocircle) and Google.
Good luck
bdp24's avatar
bdp24
9,788 posts
 
A lot of info on this subject can be found on the Planar Speaker Asylum site. Magnepan is by far the most-covered planar brand there.
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