Hello doitwithlife,
I have no doubt that rdoc and ricred1's suggestion of a pair of REL Carbon Limited subs would work great with your speakers but, if a pair of REL S812s at $6K/pair was too expensive, I don't know why they thought a pair of these at $7K/pair are going to be an acceptable option for you.
In terms of bass quality and bass integration with your main speakers, I can tell you with certainty that a pair of subs will perform twice as well as a single sub and 4 subs will perform about twice as well as a pair of subs. This is based on scientific research done by PHD acoustic experts, Dr. Earl Geddes and Dr. Floyd Toole among others, and my personal experience over many years of attempting to incorporate subs in my own system.
It's useful to consider the number of subs utilized in terms of good, better and best with the quality of the subs employed also being an important contributing factor.
Good-a single good quality sub is capable of providing good bass response at a specific single listening position if the sub is positioned properly in the room in relation to the listening position. I recommend using the crawl method (google it) for optimally positioning the sub. I've found that the quality of the sub is more important when a single sub is used than when multiple subs are used.
Better-the multiple benefits of using multiple subs first becomes evident with the use of 2 subs. The bass is noticeably, smoother, faster, more detailed, more effortless, more natural and blends better with the main speakers.
Best- the bass benefits of using multiple subs in a given room only increases as more subs are employed up to the scientifically identified optimum threshold number of 4, beyond which additional subs only have smaller and more marginal benefits. This is why the Audio Kinesis Swarm and Debra distributed bass array (DBA) systems utilize 4 subs. Using either of these bass systems will outperform any pair of subs available, no matter their quality level or price, in your room and the total cost is a relative bargain at $3K. Either system will provide the best quality bass as well as the most seamlessly integrated bass with your Sonus Faber Elipsa SE speakers.
If $3K exceeds your budget, I'd recommend buying a pair of very good quality SVS SB-1000 subs brand new for $950/pair (on a free in-home trial basis) that would provide very good quality and well integrated bass to your system right away. Then, if you liked the results, you could add a 2nd pair and create your own custom 4-sub DBA system when you're ready. Here's a link to the SVS SB-1000 sub:
www.svsound.com/pages/subwoofers#1000-series
Tim
I have no doubt that rdoc and ricred1's suggestion of a pair of REL Carbon Limited subs would work great with your speakers but, if a pair of REL S812s at $6K/pair was too expensive, I don't know why they thought a pair of these at $7K/pair are going to be an acceptable option for you.
In terms of bass quality and bass integration with your main speakers, I can tell you with certainty that a pair of subs will perform twice as well as a single sub and 4 subs will perform about twice as well as a pair of subs. This is based on scientific research done by PHD acoustic experts, Dr. Earl Geddes and Dr. Floyd Toole among others, and my personal experience over many years of attempting to incorporate subs in my own system.
It's useful to consider the number of subs utilized in terms of good, better and best with the quality of the subs employed also being an important contributing factor.
Good-a single good quality sub is capable of providing good bass response at a specific single listening position if the sub is positioned properly in the room in relation to the listening position. I recommend using the crawl method (google it) for optimally positioning the sub. I've found that the quality of the sub is more important when a single sub is used than when multiple subs are used.
Better-the multiple benefits of using multiple subs first becomes evident with the use of 2 subs. The bass is noticeably, smoother, faster, more detailed, more effortless, more natural and blends better with the main speakers.
Best- the bass benefits of using multiple subs in a given room only increases as more subs are employed up to the scientifically identified optimum threshold number of 4, beyond which additional subs only have smaller and more marginal benefits. This is why the Audio Kinesis Swarm and Debra distributed bass array (DBA) systems utilize 4 subs. Using either of these bass systems will outperform any pair of subs available, no matter their quality level or price, in your room and the total cost is a relative bargain at $3K. Either system will provide the best quality bass as well as the most seamlessly integrated bass with your Sonus Faber Elipsa SE speakers.
If $3K exceeds your budget, I'd recommend buying a pair of very good quality SVS SB-1000 subs brand new for $950/pair (on a free in-home trial basis) that would provide very good quality and well integrated bass to your system right away. Then, if you liked the results, you could add a 2nd pair and create your own custom 4-sub DBA system when you're ready. Here's a link to the SVS SB-1000 sub:
www.svsound.com/pages/subwoofers#1000-series
Tim