speaker placement

Interesting problem posted elsewhere and it comes up here constantly in a slightly different form. Someone is moving from a Klipsch RP setup to KEF R Meta, so R7 Meta towers, an R6 Meta centre, R8 Meta surrounds, CI200RR-THX in the ceiling, two KC92 subs, a Marantz AV20 processor with an AMP30...

Someone posted a bedroom setup asking whether 9 feet between left and right is a problem when they sit about 10 feet 5 inches back, with a hallway opening just off the right speaker. The equal sided triangle thing gets repeated so often that people treat it as a rule, and it really is not. It is...

Someone posted a bedroom setup asking whether the equilateral triangle rule is a make-or-break thing, and it is worth pulling apart because that rule gets repeated here like scripture. Their numbers were roughly ten and a half feet back from the speakers, about nine feet of separation, and a...

A bedroom setup post caught my attention because the numbers in it are the ones people agonise over for no good reason. Roughly ten and a half feet back from the speakers, the pair about nine feet apart, and the question is whether the room needs rearranging to widen that spacing because...

Someone going 5.1 to 5.1.4 with a properly mixed system, in-wall KEF Ci4100QL-THX up front, a Q250c centre, Polk OWM3s on surround duty, an RSL 10S sub, all pulled together with Dirac on an RZ-30, and the question is whether the four heights have to match any of it. Short answer: no, and it is...