I have a Yamaha HTR-5930 receiver with all the speakers still working but the subwoofer recently was blown. It was the SW-P270 with a "dynamic power" of 100W. I'm wondering what kind i should be looking for. i found a sony 150W powered sub online that seemed pretty good, but i don't know much about whether my receiver can handle a bigger one or not. The old sub plugged into an outlet in the wall and just had a little cord that connected it to the receiver so i dont even know if the receiver has anything to do with powering the sub. PLEASE HELP OUT!! Thanks