I had a 12" SX on a 1500.1 in a 2 cube 32 hz box. I wasn't a big fan, but that's cuz it got too loud for me //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif it handled the power like a champ, and the box probably could have been tuned a bit higher.