I recently purchased a Home theater surround sytem(Panasonic SC-HT920) and set it up and thanks to Chris' advice, I got everyhing to work.. My problem now is that my aartment has wooden floors and my subwoofer is making the floor and walls vibrate. I already got a complaint from my downstair neighbor. Any suggestions on how to prevent/eliminate/reduce the vibration will be greatly appreciated. Thanks..
Unfortunately, it is difficult to block low frequencies. You can try putting the subwoofer on top of dampening material. Or you can just simply turn it down.