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RE: How many subs? and should I go from 5.1 to 7.1?

Posted by Duke on March 7, 2010 at 23:12:41:
1. The in-room bass smoothness goes up with the number of bass sources as long as they are spread fairly far apart. This way each sub produces a unique peak-and-dip pattern at any given listening position, and the sum of two or more dissimilar peak-and-dip patterns is smoother than any one alone would have been. So in my opinon adding a second sub (preferably along one of the walls opposite that corner) will improve the in-room bass smoothness. Given that small rooms generally have worse bass problems than large ones, adding a second sub is arguably of greater benefit to a small room than to a large one. This seems counter-intuitive, but the reason for going with multiple subs is bass quality, not bass quantity.

Duke