AVR350 - no bass in Neo6 or any other mode

i am kind of new to this world. i was using an arcam stereo amp all these time and recently got an arcam AVR 350, configured it to 3.1.

and i dont see my subwoofer active on any modes except Stereo PCM and 5.1 mode from TV DVR.
i was hoping this to work in all Music modes (Neo6 Music, Neo6 Movies etc..) so that all speakers are running with sub woofer..

any ideas ??

Set all your speakers to small, and the crossover setting at 80hz for a start.