Casey, either you've got a software setting that's interupting the bass to your front speakers or you have a malfunctioning unit. No matter what you may think of Denon, they wouldn't let a design out of the lab that doesn't pass bass to the front speakers. That would be caught by the lowliest of interns on the first day of testing.
Have you attempted turning Audyssey entirely off? Have you dropped your crossovers to their lowest point? Are you set with Large fronts? Are LFE + Main selected? If the answer to all of those is Yes, then you'll have to deal with their online support people or your local shop to dig further.
If it really won't do it, maybe you have a bad unit - there's already someone else on the forum who's had to return one. And there are several people operating without the same issue, so it's not a design flaw.