How far away from your speakers are you?

Hi all,

  I had the luxury of designing my music room on the side of our home with no size restrictions. The room is 30 ft. wide  by 55 ft. long with no parallel surfaces. The ceiling is 11 ft high in front and 18 ft high in the rear. The ceiling design was patterned after a concert hall in Osaka Japan.It was designed with acoustic treatment from ETF tests taken when the room was closed in.

 The three front channel line sources are 9ft 6 inches tall. Left and right channels are 6 ft. from built in subs and center channel is 11 ft from the curved front wall.  Seating positions are 23 ft. from the front channels.  Pictures are in Audiogon's extra large rooms-Ken Fritz's system.

  Additional information in the following links.https://www.dropbox.com/s/yqoirc6g2w6jf9m/Ken%20Fritz%20V3%20CC%20Mix.mp4?dl=0

Maggie 1.7is, large room in open floorplan, speakers are 77in apart, angled exactly 13.396deg. Tweeters to outside (for now). Ideal Listening position 108in from center of line between speakers. 

As measured from center of drivers:

8.5’ from listening position

23.5’ W X 11.75’ D X 10’ w/ 15’ peak H

3.5’ from wall behind speaker backs

6.75’ from side walls

Magnepans: 4' from back wall, 3' from side walls, 5' from each other, toed in 15 degrees, 20' from my listening position. Thinking of adding a Magnepan DWM bass panel, separately amped (the bass panel has stereo inputs).  Does anyone use the DWM?  With what results, please?

Once I read that a good way to find a place to put your speakers is to put one of the speakers in the chair where you sit (if they are small enough) and to move around the room with music going in the chair and find a spot where the music sounds balanced. Put one of the speakers in that spot. Repeat the process for the other speaker and put the other speaker in that second spot. This procedure also works with small sub-woofers to give balanced bass. Alternatively some people like to put sub-woofers in the corner. That often gives more output, but there is also a level control on powered sub-woofers.
Other recommendations are given by the manufacturers. You could try that, too. They often suggest things like a triangle shape, and various amounts of toe-in and distances, such as the rule of thirds.
I have recently experimented with four Magnepan 1.7 speakers by putting two on one end of the room and the other two facing in the same direction about halfway along the room near the walls. It really gives a big image. The key is experimentation.