The M22 and on wall M22 have exactly the same specs.

If there is one thing I am confident of with Axiom, its their measurements/specs. They have both the equipment and the understanding/ability to use that equipment properly.

Perhaps issues with the on wall have more to do with placement and room modes than speaker performance?

Fred

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Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!