I am looking to upgrade an old velodyne sub for my 3300 cubic foot sealed dedicated home theater. About 60/40 music to movies. Music is more important although I do like to shake the room a little with movies. I don't listen very loud. Mostly acoustic, jazz and rock. I am by no means a bass head. The room is moderately treated. Carpet over concrete on floors, traps in front corner and back wall. Ceiling is drop ceiling and walls are drywall. Salk ht2 tl fronts and ht2c with ht1 on wall surrounds. Denon 4520.
My budget is up to 3000 but I would like to keep it closer to 2000. Size and appearance of the subs is not critical but I am a little concerned about trying to get >100lbs subs down the steps. I have been looking at Rhythmik. I am wondering if could get by with something like 2 Rhythmik F12's or would I need to climb up to F15's, FV15HP's? How much of a difference would there be if I am listening at moderate levels.
I greatly appreciate any help or advice as I am just starting to learn about subs.