On-wall speakers

[parinshah]

1) I plan to have a large screen with a width of about 108" (120" diagonal), and place the Axiom on-wall speakers (only want on-wall or in-wall speakers, although I know most people will try to convince me otherwise) on each side of the wall, which would be about 10' apart from each other. We are looking to sit about 12-15' back from the wall. For HT purposes, are those speakers going to be too spread out from each other for this sitting format?
Is it a lot better to have the speakers aimed straight at you?

2) How about a center channel? Do I need to have it placed on the wall at ear level? I think that would be at 4' or so...and then the screen begins right about that?

Thanks!

 

[mvp2005fan]

Hi!

Most of the recommendations I've seen suggest the main speakers subtend a 22 degree to 30 degree angle from your main seating position--so as long as you stay within that range, you should still get a nice stereo soundfield.

I think the idea of placing the center at ear level (or at least pointed directly at your head) corresponds to what most folks recommend.

Good luck!

 

[mvp2005fan]

Here is a diagram of what I was trying to describe above: Given a fixed 10 foot span between the front speakers, you will have to keep a seating distance of 8.6 feet to 12.4 feet (this distance is measured perpindicular to a line drawn between the forward position of the L/R main speakers--not the screen--because in many setups, the forward position of the mains is a little closer to the seating postion than the screen. If you are using on-walls, the forward position of the screen and front speakers may be indentical for you). Choosing a range between this calculated distance will allow you to maintain the recommended 22 to 30 degree angles from your seat to the mains. (I never knew that High School Trig would come in handy someday! )

Good luck!

 

[mvp2005fan]

Almost forgot--many people recommend that the speakers be toed in slightly to aim either directly at your seating position or to cross slightly in front of it. This seems to improve imaging, but you will need to experiment to see what sounds best to you.

 

[mperfct]

Almost forgot--many people recommend that the speakers be toed in slightly to aim either directly at your seating position or to cross slightly in front of it. This seems to improve imaging, but you will need to experiment to see what sounds best to you.

I believe to be sure if you need to toe or not, you need to measure off-axis response of the speaker. Fortunately my RBH's had great off-axis response, otherwise I wasn't looking forward to trying to toe-in some in wall speakers.

 

[mvp2005fan]

I believe to be sure if you need to toe or not, you need to measure off-axis response of the speaker. Fortunately my RBH's had great off-axis response, otherwise I wasn't looking forward to trying to toe-in some in wall speakers.

Hi, mperfct:
Good point...I had forgotten that we were talking about in-walls--I was just thinking about on-walls or floor standing speakers. Toeing in-wall speakers would be quite a trick, unless you have some of the inwalls that let you aim the tweeters to toe them in (e.g., Speakercraft)