Hello Steve,
Okay, good. You should be aware that I went from 2 subs to 4 subs in my system search for high quality bass. I've never tried 3 subs but one of the most prolific acoustic researchers and advocates of the 4-sub DBA concept, Dr. Earl Geddes, has stated that 3-sub DBAs can be as effective as 4-sub DBAs if the 3 subs are properly positioned and configured, with configured meaning the volume, crossover frequency and phase controls are optimally set.
I have no reason to doubt that 3 subs can work well but I can't help thinking that optimum positioning of each sub is likely more important when 3 subs are used than when 4 subs are used. I have complete confidence in the crawl method of sequentially positioning each sub in a room, since I've used it effectively in my room with 2 and 4 subs, but wanted to make sure you're aware of exactly how to do this.
I'm also thinking that you have the option of creating a custom 4-sub DBA system, by including your smaller 10" self-amplified sub as the 4th sub, if you'd like. In other words, your room is large enough that I'm fairly certain that 3 large subs will provide high quality bass throughout your entire room, if precisely positioned and configured, but I'm very close to certain that 3 large subs and a 4th smaller sub will do so.
I still think a good plan is to setup a 3-sub DBA system, closely evaluate the results for a few weeks and progress to setting up a 4-sub DBA system only if you're not completely satisfied with the 3-sub DBA system results.
Later,
Tim
Okay, good. You should be aware that I went from 2 subs to 4 subs in my system search for high quality bass. I've never tried 3 subs but one of the most prolific acoustic researchers and advocates of the 4-sub DBA concept, Dr. Earl Geddes, has stated that 3-sub DBAs can be as effective as 4-sub DBAs if the 3 subs are properly positioned and configured, with configured meaning the volume, crossover frequency and phase controls are optimally set.
I have no reason to doubt that 3 subs can work well but I can't help thinking that optimum positioning of each sub is likely more important when 3 subs are used than when 4 subs are used. I have complete confidence in the crawl method of sequentially positioning each sub in a room, since I've used it effectively in my room with 2 and 4 subs, but wanted to make sure you're aware of exactly how to do this.
I'm also thinking that you have the option of creating a custom 4-sub DBA system, by including your smaller 10" self-amplified sub as the 4th sub, if you'd like. In other words, your room is large enough that I'm fairly certain that 3 large subs will provide high quality bass throughout your entire room, if precisely positioned and configured, but I'm very close to certain that 3 large subs and a 4th smaller sub will do so.
I still think a good plan is to setup a 3-sub DBA system, closely evaluate the results for a few weeks and progress to setting up a 4-sub DBA system only if you're not completely satisfied with the 3-sub DBA system results.
Later,
Tim