The receiver I am considering (Panasonic SA-XR25S) says it has a power output of 100w for each of the 6 channels. For the subwoofer, does this same number apply? I noticed that powered subwoofers have their own power output. Do I need a subwoofer with 100w or more? or will a 75w subwoofer work fine without damaging the subwoofer. I really don't need much power from it, I want a bit of a kick, but I have downstairs neighbors who might not appreciate listening to bass line of my music. Thanks for your help.