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RE: Why aren't corner speakers more popular?

Posted by Steve Schell on June 23, 2011 at 00:33:01:
Paul Klipsch advocated the use of corner speakers (obviously), and the placement of corner speakers along the longer wall in a rectangular room, with perhaps a center speaker like the Belle Klipsch to firm up the center image. This wide spacing is no longer in vogue, although it can provide thrilling reproduction.

I once hogged through the math to conclude that a trihedral corner is equivalent to a square cross section conical (straight sided) horn of 73 degrees included angle between opposite walls. This is quite a rapid expansion, enough of a containment of the expanding wavefronts to help most bass horns somewhat though too rapid to really maintain the flare expansion of most horns with any accuracy. Still, the corner placement is worthwhile for bass horns.

For mid and high frequency parts of a multi-way system, corner placement presents problems due to the nearby walls creating closely timed reflections which mess up the imaging severely. One can fix this with generous wall treatment, but with big corner speakers and shaggy walls one now has to deal with severe Spouse Acceptance Factor issues. This last aspect has lead to the current unpopularity of corner placement IMO.