Speaker Placement


This is a tough topic for the newbies, and even some of us old guys. Regardless of the theory and even the software available, I suspect there is much that the more experienced among us could pass on with this problem. As you shift your speakers closer to the optimum position, what do you hear? What do you hear when the speakers are too close to the front wall, or when they are too far out? What do you hear when they are too close together and need to be moved further apart? What do you hear when they are too close to the side wall? What effect does toe-in have? What strategy do you employ to dial-in a new set of speakers or a new room? I am sure Albert Porter could help us all on this one. I will post some of my experiences if this topic gets rolling.
redkiwi

Showing 3 responses by dekay

JD: Very nice post in a nutshell, which I made a hard copy of. I have a lense cleaning disc (that I have been afraid to use) that has white as well as pink noise tracks. Though I don't have a wide range of options as far as permanent placement of the speakers goes, it will be fun to play around with it (the white noise) as far as minor adjustments. Hopefully this will improve the sound in the casual listening area. If this shows positive results and doesn't drive me nuts I will then spring for the test disc that you refer to. I used pink noise generators years ago when setting up equalizers, but don't ever recall using or listening to white noise, other than when a television station went off the air.
Good news JD. My speakers have a tendency to "creep" if you know what I mean, and the soundstage just gets better and better.
Intersting Sam: My speakers ended up with non symetrical placement that was arrived at through trial and ear. The left speaker is 21" from the front wall and 6' from the side wall. There are (almost) floor to ceiling standard bookshelves directly behind it but there is also an open doorway to the left and behind this speaker. The left speaker has no toe-in and I some times partially cover the open doorway with a hall closet door that opens up to the doorway and cock it at an angle. The doorway has a pocket door as well, but I do not care for the sound when it is used in any position, so just leave it in the wall. The right speaker is 25" from the back wall with the bookshelves also directly behind it but is 8' from the side wall instead of 6'. This speaker has a slight toe-in. The speakers measure 5 1/2' from tweeter to tweeter. The left speaker fires directly into the living room and the right speaker (with toe-in) fires into the living room but also partly to the dining and kitchen area (the kitchen starts approx. 12' back from the front wall and the whole setup is a horseshoe arrangement with a center wall running half the length of the room (starting from the back wall and extending to the middle of the room). The center wall divides the living room and the kitchen. If the kitchen were completely walled off (which it is not as it has an open end) the setup would be the typical and dreaded "L" shaped room. The sound is fairly nice throughout the living room (especially on the left wall, opposite the center wall and where the sofa is located), but when I get serious I position myself in a chair dead center and 7-8 feet back from the speakers. There is a bentwood/cane settee behind/between the speakers that doesn't seem to make a great deal of difference in the sound. I can't decide whether it's good or bad is one way to descibe its effect. Although the speakers are very close together the sound stage often exceeds the boundaries of the side walls (more so on the left side wall), especially since the addition of the 300B SET amp and a pair of Svetlana output tubes. Swapping the small signal tubes in the amp not only changes detail and tonality but also the height as well as the width of the sound stage and the "size" of the instruments within the sound stage (if this makes any sense). Sometimes Krall has a huge mouth and sometimes it's smaller, depending on the tubes used. Because of all the new variables that I have been dealing with lately, I havn't posted much about the "current" state of affairs with my system. I am still trying to figure it out. I have wanted to post photos of this setup as it is one of the strangest ones that I have ever had, but it really sounds OK all things considered (not great but OK). Other than bookshelves on two other walls of the room I can't imagine why though.