Wow! Nice system. If you go to Decware website, Steve has written many papers on room acoustics. He states that 50% of sound is from components and the other 50% is the room that they are in and how they interact together. You might have standing bass waves that are causing a null in the listening position.
Have you listened from different areas to see if the bass is stronger than it is when you are in the sweet spot? Try it and see, if the bass is stronger in a different seat then maybe some bass traps would help.
Have you listened from different areas to see if the bass is stronger than it is when you are in the sweet spot? Try it and see, if the bass is stronger in a different seat then maybe some bass traps would help.