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  1. #1

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    Nov 2013

    Default How to install Ceiling speakers with cellulose insulation

    I am going to be installing a pair of RT-70's in my ceiling with cellulose (blown-in) insulation above it. I have read that laying a piece of bat insulation over the top is the best way to keep the cellulose out, but will that have an adverse affect on the sound quality or the electronics on top of these speakers? I am wondering if I should take the time to frame a plywood box around them? Please advise! Thanks!

  2. #2

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    Aug 2013
    Abbotsford BC


    Best to follow the installation instructions, honestly. I think Polk tests this stuff out, and in-wall/ceiling speakers are designed to work best free air, but even Polk recommends bat insulation in wall cavities where the in-wal speakers are...If they didn't test out stuff, this wouldn't be covered in the manual.

    You've at least done the first step right dude, read the manual :)
    Living Room Evolved
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    Polk Audio CSiA6 Center
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    Marantz CD6004
    Apple Mac Mini
    Apple TV 3rd Gen
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    Harman Kardon HK 3490/HK 3375
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