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In Reply to: RE: 11'x26' available for HT/Music room Need advice Please. posted by cichlid on July 22, 2007 at 12:40:23
A lot depends on the recommended listening distance for the speakers chosen. You don't want to sit too much closer to the speakers than the manufacturer recommends though room EQ systems like Audyssey which are available in some receivers and stand alone products can help there. You also don't want to be further from the speakers than the manufacturer recommends, if they give such a recommendation.
The 9' viewing distance for a 50" screen should work well. Don't move too much further away and you may be able to move a little closer, especially with a 1080p screen.
Get some graph paper and draw a room 11' wide on it. Draw the screen where it's going to be (ie on the wall or a little in front of it). Consider where the stand mount speakers are going to be placed in relation to the walls when considering screen location. If you're going for a wall mounted screen, then ensure the standmounts can be placed close to the wall. If you're using a wall mounted centre speaker then you're going to have to go with a wall mounted screen since you want the distances to screen and centre speaker as close to identical as you can get. If you're not using a wall mounted centre, consider how it's going to be supported when you consider how to support the screen close to the centre speaker.
Next mark out the viewing position 9' in front of the screen. Now use a pertractor to mark out lines from the main viewing position to the various speakers using the standard recommended angles. Even if you're not going 7.1, mark out the lines to the rear surrounds and mark points on those lines at the recommended minimum and maximum listening distances for those speakers, or for speakers matching your side surrounds if you're only going 5.1. You'll want to position the rear wall somewhere between those 2 points and you can make your choice on what gives a reasonable length proportional to the 11' width in order to help with room acoustics and avoiding standing waves at frequencies related to those already occurring for room width and height.
At least that's the way I'd go about working out what size room to end up with.
David Aiken
Follow Ups:
Thanks David for your responce.
He'll be using a Denon receiver that has room eg. What do you think about placing the speakers on the 3rd's or 5th's of the room? The room can be made shorter on the long end if that would make the performance better. The 11'x26' is just the outer dimemtions before any walls are put in. The walls will go in after it is determined what size is the optimum shape.
I really appreciate your help.
Chris
I guessed that you were asking about the length. You wouldn't want to make the 11' width any narrower.
The important thing is to work out where the screen and centre speaker, plus the freestanding front speakers are going to be located. Then work out the listening position, especially if there's going to be 2 or more rows of seating, and from there you can work out where the back wall goes. Work out the spacings starting from the location of the screen and front speakers and you can't go wrong.
There's lots of speaker placement methods but they all depend to some degree on the room and also on the speakers. Find out what the speaker manufacturer recommends and work from there if you can.
If the Denon receiver has the Audyssey EQ function it will certainly help even if placement and distances aren't ideal. I've read mixed comments about Audyssey but in the room my HT system is in, an open plan living area with an uncarpeted ceramic tile floor, lots of glass and reflective surfaces, and not really enough space for the speakers I'm using, the Audyssey EQ in my Denon receiver does a very nice job of delivering a result which is more than acceptable. It isn't as good as what I get in my audio system which is in a dedicated room, but it tames the hardness of the room and it's certainly good enough to let me enjoy movies and even music videos quite well.
David Aiken
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