Not dogging you, but that last pic shows a ring on the wood above the sub that appears to be obvious evidence your subs are hitting that baffle. Not only has that got to be lousy for performance, its gonna damage your woofers. Give those cones some room to breath.Heres my setup Check sig for components
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I agree. But more specifically, the surface needs to be a reflecting baffle, and spaced apart accoringly, or it needs to be as acoustically transparent as possible, and the distance apart is no longer critical (beyond missing cone excursion).I'd just put legs 2" long around them either 6 or 8 would be good. It'd keep the seat off the sub. (did that with a friends L7s)