I use this bass trap in my semi bedroom sized room where I work, and since installing these bass traps, there has been a noticable improvement in room acoustics, the bases became a bit tighter and defined. This is the first room that I am transforming into a home office for mixing and composing, so the work is still in progress but I am satisfied so far. I can't comment on the pros and cons as I don't have any other reference, but the result is there, it works, and that's good enough for me for now.