I would first turn off the auddessy's auto equilization. (Make sure your speakers are set to small, subwoofer set to yes, and sub set to LFE+Mains or LFE Norm.

The +12 gain on your receiver is way too much. Set that gain to 0.

Now slowly incraese the gain on the subwoofer, try turning up the gain until it rumbles (even if you have to go to half to 3/4 way). Post back and tell us if there is any rumble at all.

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne