Originally Posted by dasanii19
Room size is 17x16 (Open). MLP width is 8’. When I had one SVS pb13 ultra, I did t like having “dead bass spots”. I am thinking by having two sealed 18’s will fix this issue. Do you think one TV18 will have lower ULF than two f18’s? Or do you think one TV 36 will have lower ULF than two f18’s? I’m really trying to get a understanding what I’m investing in. I never felt fulfilled with my SVS pb13 ultra. I removed when Dewayne. And over here to calibrate my tv, he want impressed at all and to move forward with a captivitor. This was years back, I don’t know what mode
He was speaking about. I don’t have much space to work with, so I’m really trying to choose wisely this time.
Ported subs, especially those with port tunes in the mid-teens or lower, have an inherent advantage, compared to similar model sealed subs. Typically, the advantage starts below about 50Hz, increases pretty strongly below 35Hz, and may be enormous under 20Hz. In about the mid-teens or lower, a single ported sub may be equal in output to four sealed subs of the same model. The ports really do make that much difference, which is why so many speakers have them.
If low-frequencies matter to you, then staying with ported subs is definitely something to consider. Incidentally, both ported subs and sealed subs can benefit from room gain in the mid-teens and lower. The ported subs just start with so much more SPL at those frequencies that it is much easier to generate low-frequency house curves.
I usually like to recommend getting the single largest sub that you can accommodate and afford, and then adding a second one when it is convenient to do so. But, since you know that you want to have two subs, and since your room size may not be extremely large (despite the opening to another space) I would probably recommend either dual TV18's or dual FV18's.
Either pair of subs would have a huge
advantage below about 35Hz, and continuing into the low-teens, over either of the sealed models you are currently considering. And both subs will also have very low-distortion. The FV18, with the paper cone, is well established as a superior performer, and a superior value, now. The TV18 is a newer model, but early owner reports on it, and on the TV36, are excellent. No bad choice there either!