Yes, a couple years ago Blue Jay(aka Dr. horse)and I discussed center speaker designs and one of the suggestions I mentioned was an arrangement for a W T/MM W, which would use the tweeter and two 4" mid-ranges grouped as closely as possible in a triangular configuration. This was pure speculation, and the benefits(if any)of such an arrangement are unclear, beyond doubling up the mid-range drivers.

I might note that the competitors' W T/M W speakers that I linked above do make use of 4-4 1/2" mid-ranges which helps keep enclosure height down.


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Enjoy the music, not the equipment.