I previously owned the BD10 for several years. I traded it in for 2 of these. 1 just didn't quite fill my home theater room. Once I completed hooking them up and watched my first explosion scene I had a huge smile on my face. I am very impressed in the low range and feel these sub's provide. My theater room is about 12ft wide and 20ft long. I just can't express how much more enjoyable it is to watch movies now, with the thunder these 2 bad boys provide!