Originally Posted by eugle
this one http://kenrockwell.com/audio/stereo-subwoofers.htm
And so on...
He also says that Mono Sub became standard because of limitations of analog audio formats.
I haven't seen this being discussed previously
A. This appears to be anecdotal rather than scientifically derived. I'd be interested to see double blind testing that covered the issue. The way I understand it, to hear phase differences at low frequencies, our heads need to be several feet wider.
B. You left out what appears to be the description of why sub content is localizable:
"While a pure 40 Hz sine wave can't be localized, subwoofers almost always produce some higher-frequency sounds that can. Subwoofers generate plenty of harmonic distortion (higher frequencies) which are easy to localize, and vented subwoofers have higher-frequency wind noise as they are pushed harder."
So it depends on whether your sub is extending too high or making enough distortion for that to be localizable. Both are controllable. Vross over lower and/or steeper; play the sub within it's limits (with the corrolary obtain a sub that can play the frequency range you desire without undue distortion at the levels you require).