I'm all hooked up...Set crossover to 80.. phase 0... volume is about at 9 o'clock The bass is very clean Amp output at 4 It is loud but not boomy It is very impressive , a tight clean sound so far. I put on Cream's Reunion dvd. It is pretty amazing. I played the explosion scene from Master and Commander. That too was pretty darn good. I am thinking I can get a bit deeper and more body rattling bass if that ,makes sense...I am 12-13 feet away from the speakers. Do I turn up the volume on the sub? or do I increase the amp output higher than it is? I am sure when my wife comes home this will be an exercise in futility. I am now upstairs at the keyboard and it is shaking LOL! I guess it's louder and deeper than I thought!! I will post in a few more hours when my "ears are broken in" What I do know is I did a side by side with thge old Bic and what a difference.....