Originally Posted by Sdiver2489
Why am I so concerned with extension? We are on a subwoofer forum are we not? The SB12 is basically 6db down from nominal at 23Hz. To say there is very little content of interest in this region seems counter to the point of why people go with large subwoofers. With room gain added in it may add a bit to the extension but with a 4th order rolloff its not likely to improve that much.
The SB13 isn't much larger, has roughly the same output as 2 SB12's and has increased extension due to the larger woofer and 2nd order rolloff. Yes you lose the smoothing advantage of two subs. However, the upgrade path, as I mentioned before is obvious. Once you have 2 SB12's there isn't much more upgrade to be had without moving/selling/scrapping the subs out of the setup.
The only reason to go with one subwoofer over two is if can't afford two or don't have the space. Why would you sacrafice a smoother frequecy response (which means better quality bass) for extension when SB12's are capable for the vast majority of content. Also, some people purchase large subwoofers simply because they can.
"The idea is to use multple subs located around the room to smooth the spatial and spectral response at the seating location. The fact that multiple subs does this has been proven time and time again and really isn't an arguable point. IF you want the smoothest bass, then you must use multiple sources, no single source can compete
. The room dominates the LF situation in any audio system and its the sources that must be accomodated to the room.
Sure its not great to have subs all over the place, but you have to get your priorities in order. Do you want the "best" bass or not, because if you do, you better get used to multiple subs" [Earl Geddes, Ph.d]
"Are two subs better than one??? The answer to this question is typically yes, assuming you’re comparing one vs. two subs of the exact same brand and model #. In almost all circumstances, installing multiple subwoofers in your theater room will yield significantly better and smoother bass response
across a wider listening area due to modal averaging. We’ve covered this topic thoroughly, so I don’t want to re-invent the wheel." [Audioholics]Edited by Auditor55 - 8/8/12 at 12:04pm