IK Multimedia ARC and ILOUD MTM speakers

I've used ARC, both version 1 and 2. It can help, but not always. I don't like how it changes the balance between my sub and my mains. I wish I could make it so only effects frequencies aboove a certain cutoff. Now, I've used ARC in 3 different rooms, and in each of those rooms before and after room treatment. The results are always different and unpredictable. Sometimes things sound weird and phasey. Sometime they sound better and translate better. In general, the worse your room sounds, the more ARC is doing therefore the more drastic the change. Its certainly not a substitute for room treatment or good acoustics, but it is another tool.

I'd shy away from speakers with built in ARC correction as you can much more easily just use it in plugin form on any speaker. That way it gives you much more flexibility to use or not use it.