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Upgrading XC Speakers: Polk Audio MM651UM vs. MM651 - Which is Best?

2.1K views 3 replies 2 participants last post by  sthxc83  

I may be mistaken, but I don't think you will be able to use the UM version, because the speaker covers on those are not removable.

The regular non-UM version have removable covers.

Double check before you purchase.