Toe in is crucial

A couple of years ago I made floor mounted angling devices that attach to the plinths of my Cornwall 4's. These brackets are perfectly centered on the wall behind the speakers and can be used to change the distance between the speakers relative to my center listening position, and then the angles between the speakers to high precision - about 1/16 of an inch. The speakers are both attached to the devices on one corner that pivots to the common wall behind them. To alter the angle from the wall is simply a matter of pivoting the speaker on the attachment point while measuring the swinging speaker corner to the wall behind it. A yardstick with 1/16th inch resolution controls the amount of "swing" (angle.)

Being able to easily adjust toe in quickly and effortlessly with such fine control was one of the best mods to my system.

@hilroy48 that is very fast timing. I get to move them around for several days in and out during listening till I find what I want.

@czarivey  The dealer I bought them from, Brought some reference Media he likes and know what it is supposed to sound like. From there we played my music for the final tweaking that suited my ears. I have the option to move my listening chair back and forth as well. 

When I get new speakers I always try no toe in and on axis back to back to see the extremes. I almost always end up somewhere in the middle. 

This subject is on my mind right now. For years, I was listening in my room with no toe-in. About two years ago, i decided to toe in my speakers to see what, if anything, i might be missing. At the time, the toe-in I achieved allowed me to 'improve' the width of my soundstage and I was happy with that. Now about three months ago, i decided I wanted to hear what my old set up sounded like, so back to zero toe-in I went. Well to say the improvement is quite noticeable and in all ways better would be an understatement! I had noticed a very slight amount of brightness when the speakers were toed-in, assuming that this was part of a source problem, as the issue came and went depending on the recording. Now, that issue is no more, the horns again have the right amount of blat, the depth and soundstage is even wider and the bass is simply more there. No issues with any type of fatigue, that I now put down to the tweeters aimed directly at my ears before. So, although it clearly can be beneficial to toe-in, and highly system room dependent, the lesson here, at least for me, is that this not always the case. 

From now on, my speakers are straight ahead.