I started with one sub years ago,added another last year,read posts from miller and nonoise,and was intrigued.After reading everything I could find about "the swarm" I added two more.I already had room treatments which smoothed the bass nicely and got rid of the 'sonic boom'.I don't think about the bass anymore because it sounds perfect to me no matter what the recording.I never wish it was tighter,fuller,more accurate or dynamic.It's always just right.