Ideal Speaker Placement & Room Acoustics (1 Viewer)

[PushkarDighe]

Hi Friends,
Could you kindly give your comments on my following statement?

"In a home theater if all the speakers are correctly SET and ALIGNED and if the room acoustic are perfect then in such situation, a single MONO signal if sent to all the speakers namely L-C-R and LS-RS then at the SWEET spot it would seem as if the sound is coming exactly from top of the listeners head"

L - C - R


X

 

[Phil_DC]

Here is a good read on the subject:
http://www.dolby.com/ht/Guide.HomeTheater.0110.html

 

[John Garcia]

This is what speaker level calibration with an SPL meter and test tones are for. Very few rooms in a hometheater are ideal for sound, so calibration and placement take on a more significant role. Calibrating each speaker idependently is required, relative to it's placement within the room.

 

[PushkarDighe]

Thanks for SPL meter suggesstion I am sure I need to buy SPL meter. Till then I was thinking this would be a good way to check speaker levels and positioning

Pushkar

 

[Bob McElfresh]

it would seem as if the sound is coming exactly from top of the listeners head

So you are saying/therorizing that all the speakers would create an image above your head?

I dont think it will really work.

For one thing, the sound waves would combine & cancel each other to give a very funny volume. Kind of like what happens with multiple subs in the room.

Another thing: when two speakers create an image in front of you: the speakers ARE throwing sound at your head. I dont think it works for an over-the-head image.

One of the magazines has a series of articles on "Home Theater Architect". The author actually recommends putting the center speaker off-axis a bit and does a lot of analyis of seating to make sure you dont sit in the exact center of perfectly aligned speakers. He says this is un-desirable for a HT system. I dont know if you get "Sterophile Guide to Home Theater" in India, but take a look at the current issue if you can.