With my RSL 12S. Replaced a pair of subs, with considerable improvements in sq, bass extension, detail and dynamics. This sub rocks, and works extremely well with the Lascalas. Coherent, The photo shows, the furthest I might listen. The floor mat is there, as I often move my chair closer, based on the music, my listening level, and the amplifier being used at the time. My crossovers allow for near field listening. Just awesome, to my ears. Set up on long wall.