I used the DVD-Audio files, loaded them in Samplitude as a 6 channel mix, turned them all down -6db, and played with the surround channels. I brought the bass up in the mix in its placement on the surround scope. Also mixed in the CD version at -16db .. just enough to help dynamically separate things. After mixing, EQ'd the bass less to the point where I can play it loud and it doesn't bleed the ears.