I also own a pair of M22's and my room is a small room(15 x 13 x 10). I bought a Dayton Titanic MKII Vance Dickason Subwoofer. It comes in kit form but It took me only 45 minutes to ensemble it. It uses the Titanic 10" MKII Driver that has superb specifications. It sounds very, very tight and it is perfect for music. It also does a good job with Movies...


What really matters is getting the sweet spot!