well.. the way I have my room setup I have been able to get some very low frequencies out of the cbm-170s as mains without distortion. its quite impressive.

I think its the acoustics of my room... I have all wood blinds.. wall treatments, etc. and its not a weak amount of bass its pretty darn good!

anyways.. I prbly will end up using the subwoofer like i normally do during daytime (SVS sub) .. but for night time listening I wanted to get as low and as much bass as possible from the mains without distortion...


but im starting to think that its not just low bass... but more mid bass that is repeated with a lot of "omph" or power and repeated very fast that causes the anomoly...

the vibration remains ... a lot of times it occurs on bass guitars..

also.. does anyone have any solution for removing some minor port noise????

but anyways the vibration still there =(...