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

@ghdprentice , oh, don’t get me wrong, it wouldn’t be jealousy (well, maybe a little bit of envy, if I was totally honest), but I think it would be hard to listen to mine after hearing a system on that level.

I remember back in ’94 or so when I started down this destructive path, my wife & I went to a brick & mortar "hi-fi" store because at the time I was wanting to move up to a Carver CDP that featured a 6DJ8 in the DAC. (I certainly "progressed" since those innocent days.) Anyway, after I listened to some stuff in one of their listening rooms & had met a couple of salesmen, one young guy (& I was young back then also, but he was younger) was telling me about his Silver 9s (or Silver 7s, I cannot remember which) and also about Winston, another salesman I had met, who had to get rid of all his stuff and wouldn’t replace it with "affordable" because his previous gear had ruined for something less. I can maybe see that.

Anyway, there is a lot wrong in my room, but one thing I’ve got right is no gear between the speakers or on the back wall.

However, as far as my dogs go, I give them run of most of the house, but I don’t trust them (one in particular) a whole lot, & therefore, they don’t go in The Room.

@ghdprentice  Now sure I understand your insistance for no gear between speakers.  Explain please?

@bigtwin  , I cannot and will not try to speak for gdhprentice, and I hope he does offer his explanation so I can learn if what I think is correct  Anyway,  I remember back in the 90's when I had a prescription to Stereophile, I had read in one of their articles that keeping the area between & behind the speakers clean made for better  imaging (I assume center imaging) & I thought I remember reading that it could have an effect on the soundstage.

But with all that typed, a lot of what I thought I remembered learning from Stereophile gets routinely debunked on the forums.  Meaning maybe I misinterpreted what I was reading or maybe there is more than one way to skin a cat & the way they wrote about it in Stereophile was the wrong method.

Anyway, hopefully @ghdprentice  will weigh in on that.   

 

 

As far as stuff between the speakers. In general, yes it usually screws up the imaging. It is unfortunately, like everything in audio, somewhat dependent. I had apogee ribbon speakers for many years… for some reason the equipment rack did not make much of a difference if any. But all the other speakers I have had, definitely matters. Not subtle at all.

First of all, typically, to develop the capabilities of speakers soundstaging you first have to get the toe-in, rear wall distance, and rear dampening correct… then hopefully your soundstage will go beyond your speakers, left and right. Then you work on depth.
 

Typically, an undampened rear wall, will either cause confusion in the imaging or present the rear limit the of the sound stage. If you add dampening… I have always liked thick wool oriental carpets. The dampening changes from almost none (a sheet), a bit (blanket), to good… a thick, heavy, tightly woven wool rug… like mine (hold your breath… these things are expensive… hence people use other stuff).

Anyway, so in my current room, the sound stage extended from my speakers (front) to the wall without the carpet (wall is plasterboard, 2x4s, with concrete and solid earth behind that ((yes… I am really lucky)) ), about 4.5’. Adding the carpet.. the soundstage goes into the wall two or more feet. Somewhat recording dependent of course. Put my audio rack there… and there is a gaping hole where the equipment rack is. Not a subtle thing. A hole… no sound in there. I am sure I could bring in a neophyte and point out all the characteristics of my system, and point out the hole and they would be able to “not hear it”, easily during the first session.

 

All of this is contingent on doing the work to get your system set up correctly. It is also dependent on your speakers and associated equipment, but probably less so than many think. I am pretty sure you could put a system together for $2K speakers and $1K components and craft outstanding imaging… probably less. Most “decent” equipment is capable of great things in the right hands. One must be patient and listen.