Measurements done last weekend during setting up my 2.2 system, 1/12th smoothing for readability. Pink is an RTA around the LP. Blue and green are two sweeps pretty close together at the LP.
After these measurements I added 2 additional PEQs to bring down the bass peak at 40 hz and the elevation between 50-70. Speakers are high passed at 80 hz 24 dB/oct, rear ports are not plugged. Subwoofers are low passed at 100 hz 24 dB/oct. Time alignment was done based on OCR's method using REW's alignment tool.
There's some serious SBIR going on between 120-400. The speakers are located partially inside a wall shelf cabinet so there's a lot going on acoustically.
After these measurements, I've added 5.5" absorbers behind the speakers to try to reduce SBIR. According to Amir's measurement of the Titus' bigger brother there's rearward sound pressure up to 400 hz -6dB and the panels should be effective to below 200 hz.
There's also a quite steep 1.5 dB/downward slope, but that might be because they're 90 degree measurements at the LP so I am going to check that with the mic pointed at each speaker. The sound is definitely warm, partly because I applied a Harman curve for moderate listening volumes as standard and because the Titus are designed like that. The sharp drop off to 20 hz is because of the listening position that's too much at the center of the room, but there's not much to do about that for aesthetic reasons.
SBIR calculation of the right speaker which is closer to the side wall and same other distances as the left speaker:
Calculated performance of the panel behind the speaker:
Picture of the right speaker:
Anechoic measurement of the speaker: