Hi! I have recently finished setting up my HT/stereo system consisting of Kef IQ90, IQ60C, IQ30 and dual SVS PC-13 ultra with upgraded amps. I'm using a Denon AVR-X4400h to drive my setup (7.2). Attached is a REW measurement of my untreated room. The room is L shaped 3,3 x 5,8m (10,8 x 19ft) listening area + 2,2 x 3,5m (7,2 x 11,5ft) office. I have speakers about 70cm (2,3 ft) from front wall and 55 cm (1,8ft) from side wall. MLP is centered about 2,7 meters (8,9ft) from the front speakers and the distance between the speakers is 2m (6,6ft). Back wall is at a 20 degree angle towards the office. After doing the measurement I have increased gain of my subs by 8db by ear. Crossover is set to 150hz as I found that sounded best and gave the smoothest bass response. Speakers are toed in so the left speaker is aiming for the right corner of the sofa and vice versa. I find this gives good centering that doesn't change as i move from seat to seat. I also tried aiming them straight ahead which gives a surround sound feel but messy soundstage, and straight at the MLP which gives great imaging, but only in that one spot.
I think my setup sounds good but I'm always looking for ways to improve things. Is there any relatively unobtrusive room treatments I could use to improve my room (High-ish WAF)? Absorption/diffusion of first reflection points or back wall? If so diffusion or absorption? Bass traps are unfortunately not an option due to size/WAF, but I could add some absorption behind the rear speakers to try to tackle SBIR
Im also concidering upgrading my front and senter speakers to KEF R5/R7 + R2C. Every review I have read states that these are great speakers, but will there be a big audible difference from my current Kef IQ90 + IQ60C setup given the room response I have and the corrections I can do? I cannot add any treatment to the first reflection points on the left wall as the door has glass windows. I did demo the R3 and R11 at a dealer (without SW) but I find I preferred the way my setup sounds. This can be both the room and the lack of subwoofers but I guess the only way to know for sure is to get a home demo.
Cheers
Andreas
