Hello hile45,
In any room and pair of main speakers, it's been my experience that a pair of subs will perform and sound about twice as good as a single sub.
A 3 or 4 sub distributed bass array (DBA) system will not only typically provide the best bass performance in a given room, it will also do so throughout the entire room with less seat to seat variance. But two subs will provide very good bass performance at a designated listening position that will be faster, smoother, more powerful, more dynamic, more detailed and have a greater sense of ease than a single sub, no matter its quality or cost, is capable of providing.
No matter how many subs you decide to utilize in your room, however, I suggest you take care to position each sub optimally by either using the crawl method or the more scientific method of utilizing a good quality mic, computer and room frequency response analysis software. It's important to ensure that any sub you use has the required separate controls for the optimum setting of the volume, crossover frequency and phase. I'd also recommend you use subs with at least 10" drivers. There's nothing wrong with buying subs used since it will definitely save money but just make sure it has the proper controls and you can physically, mechanically and sonically check it out.
Tim
In any room and pair of main speakers, it's been my experience that a pair of subs will perform and sound about twice as good as a single sub.
A 3 or 4 sub distributed bass array (DBA) system will not only typically provide the best bass performance in a given room, it will also do so throughout the entire room with less seat to seat variance. But two subs will provide very good bass performance at a designated listening position that will be faster, smoother, more powerful, more dynamic, more detailed and have a greater sense of ease than a single sub, no matter its quality or cost, is capable of providing.
No matter how many subs you decide to utilize in your room, however, I suggest you take care to position each sub optimally by either using the crawl method or the more scientific method of utilizing a good quality mic, computer and room frequency response analysis software. It's important to ensure that any sub you use has the required separate controls for the optimum setting of the volume, crossover frequency and phase. I'd also recommend you use subs with at least 10" drivers. There's nothing wrong with buying subs used since it will definitely save money but just make sure it has the proper controls and you can physically, mechanically and sonically check it out.
Tim