Originally Posted by Bigbirney
I'm so torn. The more I read the more confused I get. Basement finally finished this week. 2200 cubic feet basement that will now be wood laminate folder. Only room for a single sub. Was set on V1512, but now I am thinking V1812. I have never owned sealed, but s1812 is also intriguing. 70% movies.
For 2200^3, on concrete, and for 70% movies, I would definitely recommend the V1812. Movies have a lot more <35Hz content than music does, and the LFE channel in 5.1 movies is recorded 10db hotter than the content in the regular channels. That gives ported subs a big advantage for movies. It also isn't just a room volume issue, or the fact that the V1812 will have a little heavier sound signature and more total SPL. It's the fact that the larger ported sub will have an advantage for increased low-bass tactile response (TR).
Below about 35Hz or so, we feel low-bass frequencies as much as we hear them, and sometimes it is hard to distinguish between the sounds and the tactile sensations. Basements have concrete floors, laid on top of packed soil. As such, they are not able to transmit low-frequency vibrations nearly as well as suspended
wood floors can. The wood laminate on top of the concrete won't really change that in an appreciable way.
I think you will like the V1812, even more than the V1512, and the ported V1812 much
more than the sealed S1812. Sealed subs are not only unable to deliver as much <35Hz SPL as comparable ported subs, but they also can't deliver nearly as much low-bass TR. Ported subs benefit from the additional particle velocity of air moving through the ports, within about an octave of their port tunes.
That particle velocity is what makes the floor rumble, and your chair shake. It won't happen nearly as much on concrete as it will on the suspended wood floor I referred to earlier. But, the ported subs will do much better, even on concrete, than comparable sealed subs will. Of the three choices, I really like your selection of the V1812 for the situation you are describing.