Gents: My subwoofer is connected exactly as the old one was, via a single coax into the rear of my Onkyo 5009. My TV's audio settings were set in the same manner as my old one, that being with its audio turned off because the A/V was doing it. Again, the entire setup and the connections are the same as the previous ones with my just replaced TV. BTW, I'm not complaining about this new "sound," because it sounds awesome. I'm just commenting that it would seem strange to have the sound more powerful and richer.