Best Speaker Placement Rules you've used?


Thought a thread like this might be interesting. What have you found to be the best rules for speaker placement? Either in your own system and room or one that has worked for you in many.
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If you check my system and threads, you will see I have a bias for Magneplanars, but it seems I always end up incorporating the following:

1) unless specifically designed to be somewhere else, put your speakers as far out from the rear wall as possible

2) same for side walls given their associated reflections

3) moving your listening chair closer to the wall behind the chair will accentuate bass, usually with pleasant results

4) toe in is overrated --- more magical imaging and that wonderful "where is the sound coming from?!" effect comes from orienting the front of the speakers in a perfectly straight line

(Having said that, for some reason toe in seems to work better with many mini monitors placed far apart.)

5) the importance of the critical basic triangle cannot be overstated. Inches -- perhaps even centimeters -- count. Even if your speakers don't beam like Quads, they will still have a "sweet spot" when set up well.

(My audio mentor used to take 4 equal length pieces of string, attach them to the top corners of the speakers and then stretch them to the opening of his EARS to make sure both speakers were in perfect alignment.)

6) Further to imaging and toe in, speakers should be as far apart as possible, although in my experience this is rarely more than about 8 feet before the center fill collapses.

Even when the center does fill in nicely, I find > than about 8 feet gives a more vague and bloated "image".

Good question. Good luck.
Thanks to all for info especially 'Restock' for the explaination of the spreadsheet.Q.I have a terrible loungeroom/stereoroom setup. Room dimensions are H=2.7m,W=3.65m & L=7.6m. Unfortunately I can only place speakers on 1 width wall (3.65m) and it has a opening used as a walkway. The maximum I can have the FRONT of the speakers is 1.1m from back wall, otherwise it is in walkway.Other side has brick wall and is OK.
I currently have Audio Physics Virgo 11 powered by Krell.
Can anyone recommend solution?
Possible back wall treatment so speakers can be closer to wall?
My dim mind will greatly appreciate the light of experience.
Hi Alex,
You have a similar room and similar problem to mine. My old HIFI room is around 3.3m x 6.6m. I had used Thiels 2.2; ProAc 2.4 and the Virgo in that room before. When placing the speakers along the short walls, I could not get the ProAc and the Virgo to sound right, especially with the Virgo. The side firing bass were just too boomly.
Then I have the tried using near field placement, placing them along the long wall about 1.2 meters form the front wall and sit almost touching the back wall. You also need to toe in the speaker. It works! Everything opens up with imaging and details that I have never imagine it could!
There is detailed information at the AudioPhysicÂ’s web site. Give it a try if you can afford for this method will place your speaker right in the center of the room making it useless for any other purposes! I hope there is no wife factors in the decision making!
Good Luck
Hi,
MY speakers are 7 ft apart, 18 inches from side walls and 1 ft from back wall, I sit about 8 feet away, I can swear that sound is comming from my cente channel, and sometimes it nothers me because I think mids are getting "smeared"
I have a slight toe-in..and tried them straight facing, I guess I just want to know if thinking the sound is comming from center is a good thing or should I move around things as much as I can in a living room,,,wich aint much! thanks
Thanks Luna for your comments. Unfortunately I can't use the long wall, nor can I place the speakers in the centre of the room (I've checked the Audio Physics site before). I live in an apartment and the combination dining/lounge room has all other rooms coming off it, so it is a heavy traffic area. Hence, I can only have speaker fronts max. 4 feet from rear wall.
Will any sort of rear wall treatment help stop reflection and interference so I can push the speakers closer to the back wall?
If anyone can give suggestions/advice...much appreciated.