x2, i had an IA20.1 at 0.5 ohm on a stock alty, big3, and a kinetik 2400. The thing was unstopableIA20.1 at .5 ohm with proper electrical //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif
^^^That's what I'm doing right now. (2) SX12s and AQ2200 = 150.5 db in my truck.aq2200 at .5