Question About the Subwoofer in the Onkyo HT-S7409 Package

So I'm leaning towards this package for my first surround setup Onkyo HT-S7409

I'm moving into the ground floor or a 2 family house next month. Hardwood floors. I THINK the bedrooms are above my apartment.

I noticed the subwoofer in this package has "spikes" as feet. Does that reduce the vibrations any more than normal feet or no feet?

I'm thinking of buying some kind of foam cushioning to put under it too just incase. I really don't want to be the rude guy with the surround sound downstairs so I'm not gonna go full blast with the volume and I'm not gonna keep the base that high either.

Thanks for your input.

Great read, thanks!

So being spiked feet aren't that great for hard wood floors and wasn't planning on putting an area rug under my tv stand, I guess I should buy a piece of Subdude to put under the subwoofer?
(planning on putting the sub to the right of the tv stand)

I guess it will help vibrations even more, I just don't want to drain out the sub to the point where I don't hear it, lol.