I've never been thinking about the actual function of subwoofers. In every one of my sets (Harman Kardon BQ60, devil 5.1, JBL) was a case and has also cracked but always beautiful sound? Nee was not the sound. After I changed gradually my speakers, a fever has only packed one can not help. So switching from Harman / Kardon at Canton. Front Canton GLE 490 Center Chrono 505 and back I have the Harmans left, cheered on by a Denon 2113 I have now the sub 10.2 and what can I say ..... Super I can say, because that is the Speaker of always has been missing. It generates a pleasantly warm sound without being somehow intrusive. Adjustment possibilities without end. Small space, normal or large room. Phases and much more. It takes a little space for him but you have this you can confidently strike. Whether music or home theater it is fast enough for music and strong enough for the home theater (without nerves) processing also look classy (eye) My new soul Massager and final solution