Shielding on JBL S-CenterII

Discussion in 'Speakers' started by Mark Hedges, Apr 23, 2003.

  1. Mark Hedges

    Mark Hedges Second Unit

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    I was wondering if anybody else has had a problem with the magnetic shielding on their JBL S-Center II speaker. I just got a Sony Wega 32HS500 HDTV and when I put the speaker on top the very top center part of the picture is discolored purple. When I lift the speaker off the TV the discoloration goes away.

    Is there anything that can be done to improve the shielding? Will this cause any actual damage to my set, or will it just be an annoyance factor?

    Thanks!

    Mark
     
  2. Myo K

    Myo K Stunt Coordinator

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    thats odd all center channel speakers should be magnetically shielded,

    maybe you have a bad one? how about exchanging it for another?

    --

    on the topic of interference, i have an omni cc mirage center speaker, it weighs a hefty 25 lbs and i placed it on my sony 27" wega (it almost spans the entire diameter of the television!) and noticed soomething odd, after turning off the television, i hear extensive static popping as the tv sets in.. i know this i normal, but with the center channel on the tv, it seemed to last longer and louder.

    im wondering if its the extra weight of the speaker or does it have to do with the shielding? there is no discoloration on m tv.

    but since then i removed the speaker, and im in the porcess of looking for a tv stand that has a top shelf for the center, the tv on the other had still has static noise when i turn off the television, but its consderably less.

    does anyone know? im guessing its the extra weight strain placed on the cabinet, i hope itsnothing electrical :/
     
  3. Phil Iturralde

    Phil Iturralde Screenwriter

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  4. Mark Hedges

    Mark Hedges Second Unit

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    The distortion got worse as I moved the speaker to the front of the TV. As I moved it towards the back it got better.

    As luck would have it I already have the Sanus shelf - I used it on my old TV. I was hoping not to have to use it as my girlfriend can't stand the sight of it but I may have no choice.

    I talked to someone at JBL and they said to try a piece of sheet metal under the speaker. I will try that too.

    Mark
     
  5. Myo K

    Myo K Stunt Coordinator

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    phil where can i find one of these?

    good guys, cc and bb dont have them, my local ht shop doesnt carry them either, are they mainly sold online or something?
     
  6. Chris Tsutsui

    Chris Tsutsui Screenwriter

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    You need something made of a ferromagnetic material. In otherwords, something that magnets stick to.

    If you could find an iron or steel sheet and cut it like with a metal band saw into a square, I suppose that could serve as a cheap shield. It doesn't have to be thick, and it could even be perforated.
     
  7. Phil Iturralde

    Phil Iturralde Screenwriter

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    Mark - hope the metal plate works - Chris has some good suggestions.

     
  8. Myo K

    Myo K Stunt Coordinator

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    thanks for the links phil [​IMG]

    unfortunately, the max weight capacity for the shelf is 15lbs

    my center speaker weighs 25lbs [​IMG]
     

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