What does it mean by pressurizing a room with a subwoofer?

Question

It's a term widely use by people reviewing subwoofers, what does it actually mean to pressurize a room? I have a 10" sub (Velodyne SPL-1000R) before that play very loud in a room with a total cubic displacement of about 3500cubic feet, which I'm in a way under-sub, as a 10" driver is never enough for a room of that size. but yet it's producing bass that can be feel. Now I've a 12" sub (Which I'm still under-sub, as for a room of that size I would need a 15" and above to "pressurize" a room, "it's physics", they says) It's still producing bass that i can feel.

So what does pressurizing a room means? To be able to feel the bass? but i've use a 10" sub and still able to feel the bass although logically it's not able to pressurize the room. How does it actually feel to have the room pressurized while watching movie? Or does it means the bass felt would be much different when the room is pressurized? Or my room is already pressurized since I'm able to feel the bass in movies?

Answer 1

It means to set the sub up so it moves the room. Smaller rooms need a higher frequency to pressurize. Don't bother with it though. If you like the sound now, don't change it. The link is from A/V Guide and is a pdf of how to setup a sub.

www.avguide.com/file-download?review=1...