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Anotherspeaker placement question (distance measurements)

A couple of threads on this topic (one in this forum & another in, of all places, amps & preamps) have got me tweaking placement in my own small listening room.

I am getting that the recommendations for distance from speaker to rear wall are from the FRONT of the speaker to the rear wall, is that correct?

And as far as the recommendations to the side wall, is this from the outboard edge of the cabinet itself, OR from the center of the driver(s)?

I am assuming that listening position distance to the speaker is measured from tweeter to ear, NOT the shortest difference to the plane of speaker to speaker to the ear?

And yes, I do realize that it is not the recommended measurements that one should be concerned about, but how one’s speakers actually perform in one’s environment regardless of these measurements, but for the purposes of experimenting with some of the advice given in the two threads I have alluded to, proper interpretation will be helpful.

The distance that most concerns me, the one that I have the least flexibility to adjust per recommendations, is speaker-to-side-wall-distance. Meaning my speakers are too close to side boundaries. But my lateral sound stage is the best part of my system’s sound stage . . . it presents the illusion of being wider than the boundaries. Is lateral sound stage more a product of speaker-to-side-wall-distance? And if not, does speaker-to-side-wall distance have an effect on a specific aspect of the sound stage?

Thank you in advance for any & all input.

immatthewj

Showing 1 response by newbee

newbee
4,751 posts
 

You can reduce the sidewall distance (from the center of the driver to the wall) somewhat by deadening the surface of the wall adjacent to the speaker and slightly forward of the front of the speaker. This in combination with some sharp toe in helps a great deal. However the benefit is mainly in the mid's and high's. The mid bass is more difficult to control and depending on the distance to the side wall might well give you a mid/upper bass boost. Re toe in, I point the axis of my speakers to my corresponding ear. You can get excellent results by crossing the speakers axis in front of your head. 

All done by ear for enduring results, lots of speaker movements and it takes a long (!!!!!!) time to get your final results. Oh, BTW, measurement are made from the walls to the drivers, not the box. 

Have fun. :-)

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