Rauliruegas,
I understand the concepts. I too believe that 80 Hz is the limit for localization of low frequencies, but others disagree. Below 80 is not a problem, above 80 can be. Bass frequencies have such long wavelengths that the position of the sub has more to do with modes and room interactions, unless the crossover is high. If the sub can be localized due to the higher frequencies it produces, then it should be placed near the front speakers. This will minimize the confusion created by various sound sources arriving at different times. In an ideal world we would have speakers flat from 10 Hz to 30k Hz and subs would not be as important. As such, I believe that subs are important. Implementing them in a given room is the challenge and I have only been successful through trial and error. I tried the formulas and gave up! The key is to continue to have fun, not take it too seriously and experiment. And, I agree, its only about the music.
I understand the concepts. I too believe that 80 Hz is the limit for localization of low frequencies, but others disagree. Below 80 is not a problem, above 80 can be. Bass frequencies have such long wavelengths that the position of the sub has more to do with modes and room interactions, unless the crossover is high. If the sub can be localized due to the higher frequencies it produces, then it should be placed near the front speakers. This will minimize the confusion created by various sound sources arriving at different times. In an ideal world we would have speakers flat from 10 Hz to 30k Hz and subs would not be as important. As such, I believe that subs are important. Implementing them in a given room is the challenge and I have only been successful through trial and error. I tried the formulas and gave up! The key is to continue to have fun, not take it too seriously and experiment. And, I agree, its only about the music.