Slight set back with amps one of the 1000ds has bad output and the other keeps overheating. So with that said we decided on putting in a Sundown SA2-2000d hits extremely low but not high enough on meter for me did 144 at 32 hz so not that bad but i want more! Gonna yank it all back out and build a wall with 4 15s now and make interchangeable ports for SPL and everyday music. This build went from mild to wild in 3 days.