Originally Posted by Bsims2719
What is better. The best sub you can buy for 800 or the best sub you can buy for 400 times two.
Thanks in advance,
If I were faced with that scenario, no question, I'd go (2)$400.
A smooth and even response is ideal, and the room absolutely dominates the bass response.
1.) The frequency of room modes is determined by the room's dimensions.
2.) How powerfully they're excited depends on subwoofer position.
3.) And lastly, the degree of audibility depends on the listener's position.
Knowing these facts and by employing some best practices, one can achieve big performance benefits by using two subwoofers instead of one.
Those that study such things, assign a significant percentage of importance to the bass range, with regard to subjective enjoyment of the experience. Also, it's also widely known that for a pleasing experience the frequency response should be relatively smooth through the bass range. The large wavelengths in the subwoofer range bounce around and double back creating room resonances, with big peaks at some frequencies, and deep nulls/cancelations at others. Since acoustic treatment of the huge wavelengths is difficult at best, it's prudent to alleviate these room issues with careful placement strategies using multiple subs.
With any subwoofer, if you locate the sub at the pressure minimum of the mode, it helps in not driving the mode to it's maximum. With two subs, you can place them in opposite sides of a particular room dimension. In doing so, you take advantage of the fact that each end of a standing wave creating a null possess opposing polarity. Such placement evens out that acoustic polarity issue, thus lessening the destructive peaks and nulls in the frequency response that come from dimension of the room.
So, whichever dimension of your room (left-to-right, front-to-back, etc.) is responsible for the biggest deviation in frequency response, place your subs on each side of that axis.
So yeah, I'd go with two subs over one. (I'd recommend two flat pack subwoofer kits like those at diysoundgroup, or Parts Express, with an INuke 3000 DSP amp, so you can both EQ for the small enclosure, and dial in a smooth response, all that for $800)
Below is the ready to assemble flat pack, and subwoofer driver. Those unfamiliar, these are highest quality, nicely CNC cut.