Speaker Placement

Its the room which determines how the speakers with sound/react.

Everyone perceives sound differently. What's not to understand?

So by 160-170 degrees relative to the listening position you mean firing almost directly away from the listener? There are some speakers with ambiance drivers that are aimed backwards and Bose speakers certainly adhere to that philosophy but it would not be good for sound stage reproduction. I admit that I haven't tried it and it would certainly be affected by your room (reflections) but I can't believe that it would be good for more than background music.

It seems to me that 180 deg. would have you sitting between the speakers. and 160 deg. would be *extreme near-field. Maybe you need to check your math...

-RW-

I think what he is trying to say is that because our ears are 180 degrees from each other the speakers should be too.A little less than 180 because our ears kind of point forward. what he forgets is that we are not trying to listen to two sounds. We are trying to localize one sound, which is what our two ears do using timing and amplitude, including the delay caused by the distance to each ear, and blocking of the sound by our head. the two speakers try to recreate location similarly, through a blend of the two sounds. If the speakers were on either side, we would hear two separate sounds.
Of course, its much more complicated than that, and volumes have been written on the subject.
Reminds me of when I was young listening on the floor to Grand Funk Railroad "Closer to Home" with my head between my parents console speakers.