I currently have a dedicated theater room in my home that seats two rows. My Denon X4000 has been calibrated for the main listening position in the front left seat. However last night I was forced to sit in the backrow due to having guests. The bass frequencies in the front row sound a bit weak and I kicked everything up from the Audyssey settings initially. They are still not amazing but they seem to be more even in the front row. Last night sitting in the backrow I was smothered with bass frequencies. It was overbearing and for the most part distracted from the viewing experience. Bass frequencies were very heavy, booming, and easily twice if not more, the volume of the bass frequencies in the front row. I am hoping to have the bass frequencies be haflway between what they are in each row for both rows.
I have stared to treat my room acoustically with 6 total 2'x4' 2" panels along the side walls and the backwall. I have not done much else yet. I am still learning this process of treating the room. I am looking for some suggestions to get more even sound in the back and front row. I will eventually build a riser for the backrow and thinking of setting it up in some way that will absorb some of the intense bass frequencies of the back row.
I hope I am posting this is the correct place. Let me know if I need to move it. Here is a bit of information about my room.
16x19 dedicated home theater room (screen on 16' wall)
Denon X4000 (no external amp yet)
Polk RTiA7 front
Polk CSiA6 center
Polk FXiA6 side surrounds
Polk RTiA1 back surrounds
2 x Polk PSW505 on the front wall about 4 feet from either side wall
Front row is about 12 feet from from sound stage
Back row is about 17 feet from front sound stage is is flush with the back wall
Let me know what additional information is needed and thanks in advance.