Looking at the specs of the 350 it should give you some of that " in the chest " feeling you're looking for.Are you certain that the sub is working correctly.My VTF 2 is rated down to 25hz and can thump the chest pretty good.I am a bit suprised you are not getting this with your 350.

Anechoic Resp. +/- 3dB 28 - 150
Room Resp. + 3dB/- 9dB 18 - 150
Max SPL Anechoic 107 dB
Max SPL In Room 118 dB


Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud