John, been following your experiments with interest, as I've suggested the benefits of a vertical M2 center several times over the past couple years. One thing that interested me was the fringing that you experienced in the normal orientation with your particular TV(which I didn't get with an M22). Since turning it over made a difference of 5" or so to the midwoofer, it would be interesting to see how much you had to raise it in the normal position(on a stack of magazines, for example)to get rid of the problem.

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Enjoy the music, not the equipment.