I have a two cabinets. when you get the 4 conductor cables, and all four subs are working, this things pumps out the bass! ive never actually tested how far these actually shoot bass, but so far 1/2 a mile is the furthest I know of and they weren't hardly working! heavy subs tho! 167lbs! get a cart and your golden, and leave them on the ground. I have one peavey cs4080 powering both of my cabs.