I’m very happy with it, not that I have a big experience in integrating a sub in a stereo setup, but the experience has been very good so far.
I didn’t play at all with the position of the sub, I just placed it close to a corner, half a meter away from the back wall.
From there I started tuning crossover and volume as per REL’s instructions and checking my preferred settings with REW analysis.
I had to use quite a low volume setting, the sub is small but extremely powerful even for 4x4m room.
I am very happy with the “blending” of the sub with the CAMs, absolutely no way to tell there is a third loudspeaker in the setup. The sound is full and immersive.
I’m still struggling with my room’s acoustics though. I improved the mid-highs with some decent absorbing and diffusing panels on the front and back wall, but the bass region is a total mess, with a number of peaks and dips between 20 and 120hz.
To fix that I should put huge bass traps all over the place.
Or buy a second T/5i??!