Hi Dave,
Thanks for the explanation.
The method you used, playing the sub at your listening position and then walking (squatting) around the room to find the spot where the bass sounds best and then locating the sub to that spot, is the exact same method in the distributed bass array system procedure that I used to place my first sub.
Doing it again for the 2nd sub placement, while the optimally placed 1st sub is playing, is also the step#2 that I followed.
However, I disagree with your statement : " You can certainly compromise for a good "all-around" placement but it will only perform optimally in one location in your room for a given listening position."
I think you're correct if only 2 subs are utilized in the room. The DBSA (distributed bass array system)'s use of 4 subs in a given room is the key and I found it has the remarkable and empirically proven affect of eliminating all bass standing waves in a given room. The result is optimal bass response evenly distributed throughout the entire room.
The only reason your good bass is limited to a single optimum listening spot is because you stopped halfway through setting up a DBAS in your room. I am reasonably certain that adding 2 more subs, following the exact same positioning method you used for sub# 1 and 2, will result in the very good bass response, that you're now enjoying only at a single optimal listening position, expanded to every possible listening position in your room.
I'm a huge advocate of the DBAS only because I use it and know how amazingly well it works. It is a system developed by 2 PHDs in Acoustical Engineering, Dr. Gettis and Dr. O'toole, that is based on math and physics and been scientifically and independently proven to be effective numerous times in various rooms.
Their published White Papers on their research and experimental results state that as the number of sources of bass wave propagation (subs) in any given room increases, the number of standing bass waves in the room decreases. They mention their realization that there is a practical limit to the number of acceptable subs in any residential or commercial space.
In a crucial statement about their findings as it relates to home and commercial usage, they also stated that they discovered that a minimum of 4 sources of bass wave propagation (subs) are required to eliminate the vast majority of bass standing waves in any room tested in their research results with any additional subs only resulting in marginal improvements. This is the reason most DBAS utilize 4 subs.
My opinion is that the above is critical information for the original OP, sautan904, to consider when setting up his new system. I'm not sure whether he understands the info, believes it or has just chosen to ignore it, however, since he has opted to go with just 2 subs. My concern is that he doesn't realize the results are completely predictable and inevitable regardless of your room dimensions.
When he discovers his 2 sub system results in numerous bass standing waves and resultant uneven bass response in his room, the good news is it'll still be solvable by an extra couple of subs.
Tim
Thanks for the explanation.
The method you used, playing the sub at your listening position and then walking (squatting) around the room to find the spot where the bass sounds best and then locating the sub to that spot, is the exact same method in the distributed bass array system procedure that I used to place my first sub.
Doing it again for the 2nd sub placement, while the optimally placed 1st sub is playing, is also the step#2 that I followed.
However, I disagree with your statement : " You can certainly compromise for a good "all-around" placement but it will only perform optimally in one location in your room for a given listening position."
I think you're correct if only 2 subs are utilized in the room. The DBSA (distributed bass array system)'s use of 4 subs in a given room is the key and I found it has the remarkable and empirically proven affect of eliminating all bass standing waves in a given room. The result is optimal bass response evenly distributed throughout the entire room.
The only reason your good bass is limited to a single optimum listening spot is because you stopped halfway through setting up a DBAS in your room. I am reasonably certain that adding 2 more subs, following the exact same positioning method you used for sub# 1 and 2, will result in the very good bass response, that you're now enjoying only at a single optimal listening position, expanded to every possible listening position in your room.
I'm a huge advocate of the DBAS only because I use it and know how amazingly well it works. It is a system developed by 2 PHDs in Acoustical Engineering, Dr. Gettis and Dr. O'toole, that is based on math and physics and been scientifically and independently proven to be effective numerous times in various rooms.
Their published White Papers on their research and experimental results state that as the number of sources of bass wave propagation (subs) in any given room increases, the number of standing bass waves in the room decreases. They mention their realization that there is a practical limit to the number of acceptable subs in any residential or commercial space.
In a crucial statement about their findings as it relates to home and commercial usage, they also stated that they discovered that a minimum of 4 sources of bass wave propagation (subs) are required to eliminate the vast majority of bass standing waves in any room tested in their research results with any additional subs only resulting in marginal improvements. This is the reason most DBAS utilize 4 subs.
My opinion is that the above is critical information for the original OP, sautan904, to consider when setting up his new system. I'm not sure whether he understands the info, believes it or has just chosen to ignore it, however, since he has opted to go with just 2 subs. My concern is that he doesn't realize the results are completely predictable and inevitable regardless of your room dimensions.
When he discovers his 2 sub system results in numerous bass standing waves and resultant uneven bass response in his room, the good news is it'll still be solvable by an extra couple of subs.
Tim