Very interesting. You have eq'd, and in control of your chain more than I. It is still on my list to do but I just don't feel an overwhelming need as I am very happy with ulf in my room. May be the cement walls? There are no rattles in the room except for my chairs and riser so I either get the chairs rumbling somewhere around 20-25hz, and lower. Or for the lower scenes (according to other peoples graphs, you know the ones that have done the work I am too lazy to do.
) The chairs will convulse more violently, almost twisting and my hair will seem to move. Not a midbase or air movement thing but the ulf makes my hair vibrate to where it feels like it curls. Weird thing to explain.
I really should tweak it like you have as I am sure there are nulls in there, but something else always seems to get my money and time. Right now I am acumaulating funds to replace my 4 year old RS10 and have enough now to get the RS4810 or lesser. Just waitng for the right time to jump.