Who positions their speakers straight ahead (zero tow in) and why.

About two years go I made an angling and placement jig for my Cornwall 4’s. The jig is screwed to both the wooden floor and to the plinths of the Cornwalls with  small hinges. The speakers are always the same in relation to the back wall since the pivot points are fixed and identical. By measuring the distance between the back walls and the leading speaker edge which can be swung to and fro both speakers can be infinitely angled and perfectly and repeatedly plane-matched in unison to the room without any fuss at all. The jig also allows the distance between the speakers to be easily adjusted without affecting the angles.

This precise and easily adjusted set up was a revelation as to the subtleties of speaker placement. As little as one degree of adjustment can be indubitably heard.

My Cornwall 4’s are set up in such a way that they can be very accurately positioned especially as to complimentary angling. One listening night recently I was startled to hear a somewhat different and dare I say superior sound emanating from them. I wondered if some of my recent tweaks had suddenly "broken in" fully. It wasn’t until a few days later that I realized our Friday house maid had moved one of the speakers while cleaning. It’s very easy to move them angularly though they remain rooted to the floor at their mirrored pivot points. My listening/living room has some unfortunate furniture placements that are essentially non-adjustable. The speaker that was accidentally toed out more was dealing with an upright piano on its sidewall. That speaker had been accidentally turned outwards a bit towards the offending piano. The result was a slightly airier sound presentation that was very pleasing and a somewhat wider soundstage.

Anyone else here experimented with asymmetric speaker toe-in?

Sometimes getting goofy pays off. It's what I like about this hobby.

My listening living room has one feature that throws another wrench into the equation - adjustable sidewall "vanes" in the form of adjustable room window/door slats - the old fashioned wooden slats that can be angularly adjusted with the pull of a cord. Most of the these "windows" are actually full length so there is plenty of slat real estate to play with. All of the windows in the room then become adjustable sidewalls (and rear walls,) and with the slats in the horizontal position, which lets into the room maximum daylight there is a big sonic difference compared to say the other extreme - all slats closed - or any slat angle in between.

Behind the window slats are double pane gas filled insulated glass windows and doors and this introduces another effect in general. Also, even when the slats are fully closed - making the room somewhat dark - the slats are still ridged enough that reflections are still modified. These old fashioned slatted windows and window/doors are beginning to fall apart, and my wife has suggested they be replaced with fabric covered slats which would probably be more acoustically agreeable to play with

Point is having sound diffusers that are adjustable on the fly does make for more ways to tweak. There is nothing new about this idea. I can think of more than a few audio heads who use slatted windows as acoustic playgrounds, but it was an option that was "inherited" with the home - not purpose built for acoustics. It does beg the question as to how many suppliers of acoustic room panels have some sort of option like this. I couldn't find any online.