Ken, a welcome to you too, and sorry to see that your surround question of a few months ago somehow slipped through the cracks without a reply. You didn't specify how far from the back wall you'll be sitting, but if the room is only 14' long I assume that you won't be more than about 4' away. If so, the suggestion would be to mount the QS8s on the back wall, 5-6' up, and spread as widely as possible(again, they're side surrounds, even when on the back wall), nearly to the side walls.

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Enjoy the music, not the equipment.