I also have a set of M22s for my living room. Just for stereo and listening to the tv for better sound. Just received them last Monday. I am using a pioneer VSX 915 for the living room. The 22s didn't sound all that great with that receiver. I took them down to the basement and tried them on the Onkyo 3007. Wow, what a difference. Must be something not right on the Pioneer. It is suppose to be 100w and that should be more than enough. But when turning them up to moderately high level they sound horrible. Like you said though, with the Onkyo I was really suprised at the bass that came from those little speakers.
