Diagnose speaker distortion - MG-IIIa

skarisch
skarisch Posts: 2
edited November 2008 in Troubleshooting
I've owned a Magnepan MGIIIa speaker set for eighteen years. I had it stored for a little while and recently changed the cloth sock. When I set it up again, I noticed a distortion coming from the right channel speaker. The distortion is located in the 2 o'clock position and is approximately five inches in diameter; it mainly appears when there are bass sounds. I would like assistance in diagnosing this problem. Is this a problem that listeners have had after owning this speaker set for as long a time as I have? Is it something that I can take to the dealer to have repaired? Or, is it time to buy a new set of Magnepan speakers?
Post edited by skarisch on
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Comments

  • HB27
    HB27 Posts: 1,518
    edited November 2008
    I had to send a pair of my Maggies back for rebuild about 3 years ago. They go the full route when redoing them. Needless to say I was shocked when they returned. It was like looking at a totally NEW pair of speakers. Money well spent.
    Harry
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  • ViperZ
    ViperZ Posts: 2,046
    edited November 2008
    The best place to ask this question would be at MUG - Magnepan User Group (check Google for exact URL address).

    It's weird that you were able to identify that the distortion comes from a very specific spot - maybe the Mylar panel is damaged there?
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  • Eric W
    Eric W Posts: 556
    edited November 2008
    Are the coils becoming unglued from the diaphragm? Second, is the diaphragm ruptured?
    -Eric
    -Polk Audio
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  • zingo
    zingo Posts: 11,258
    edited November 2008
    I've had issues with drivers having hairline ruptures in them that I wasn't able to see, even with the driver performing when distortion present. I think you do have a physical problem somewhere and Magnepan CS should be able to point you in the right direction; whether that is replacement or otherwise.
    Jake
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  • skarisch
    skarisch Posts: 2
    edited November 2008
    Thank you very much for assistance on this matter.
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