Shouldn't This Sound Boomy?

@johnlnyc I choose to believe my ears for now. I may work on placement of speakers and room treatments sometime, to see what I get. What I hear will always take precedence over the graph. But, having said that, I have a tool to record how changes affect sound now. I may end up exactly where I started. Who knows?

@sunshdw the room is 15' 2" wide x 13' 9" deep with a 9' 8" ceiling. Right side of room is open to kitchen. Left side has a wall.

The speakers are Tyler Acoustics Highland H3.5

Here is the same plot with dB re-scaled and smoothing changed to 1/24 for @erik_squires 😁. I have thought about an equalizer to tame that peak. I don't understand why my bass sounds as good as it does when this looks bad down low. Am I missing something when I read the waterfall? You mentioned that the duration is long but smooth. Can you explain that?

@mijostyn the graphs above were from the listening position. The mic was in the same place my head would be in.  I did run a sweep on each speaker individually at the same distance and height and volume. Here was the resulting graph, they look pretty close until you get below 20Hz. The red line is the right speaker which has no side wall. The green line is the left and it is two feet from a side wall. They are equal distant from the front wall.

@sunshdw I have been impressed by how much better the speakers sound in comparison to my Focal Aria 936s. I was really surprised by the bass results on the waterfall graph. I don’t hear anything objectionable. That’s why I posted this, to see if I’m missing something when interpreting the chart or if I’m just not good at hearing problems in my system. Maybe someone will have an explanation of why the graph can look this way and I am still loving the sound. The bass from bass guitars sounds really nice. The only time I get anything resembling objectionable is when I listen to Welcome to the Machine by Pink Floyd or Russia on Ice by Porcupine Tree. Those songs rumble the house and all of the glasses in the china cabinet.

I don't think I can do anything more with the room, because my wife won't have it. She has allowed GIK panels already and I'll have to be happy with what I have. I may try to equalize in the future, but for now I'm happy with the sound I'm getting.

@larry5729 the system is a Hegel H390 integrated amp and an Audiolabs 6000 CDT Transport using the Hegel's internal DAC. The speakers are Tyler Acoustics Highland H3.5s rear ported three way speakers. The room is treated with 4" diffuser panels on wall behind the listening position and a 2' x 4' x 4" bass absorber behind each speaker and a 2' x 4' x 4" diffuser panel on each side of the speakers. I have a stack of rockwool panels centered behind the listening position at the floor.

@theaudioamp the room has an area rug covering the entire floor. I have a tv and stand between the speakers and I cover them with dense foam to keep reflections from them to a minimum. I am going to run a test with no treatments and then add one treatment at a time and see what I get. I agree, the 2k dropout is a problem. I hear sounds clearly in my car that I can barely hear on my home system and I believe the sounds I’m talking about are in this range.

@erik_squires I will be holding off trying to EQ to improve. I am going to try a few things with room treatment as soon as I can find some time. But, for now, I’m just going to enjoy the music!

Thank you everyone for your input!