Having previously had the PW2200 V-2 since 2003 it was finally time to upgrade my subwoofer. I settled on the x-12 as the x-15 would be too large for my listening room. Set up was quick and easy. The hardest part of setting up the subwoofer and running the ARC was locating my subwoofer through the app. I had to change my location settings. I also preferred the computer running of the ARC program than the phone app as I felt it was a little more precise. Onto the actual reason for reading this, after setup and about 5 months of listening and break in, this is what I have found. This sub is much more musical than I was expecting, my previous sub was musical as well however with the ARC ran I was able to notice definitive differences in the sound and the additional of notes in music and movies I was very familiar with. The amount of impact when watching movies makes you feel like you are at the theater. For music the sub just disappears and blends seamlessly with my mains which was what anyone is looking for when listening to 2 channel music. Bottom line, Paradigm has continued their trend of making fantastic sounding items at a bargain price. Thank you. Customer for over 17 years and continuing.