room help for neewbie

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daztag

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room help for neewbie
« on: 17 Oct 2008, 08:50 pm »
hello everybody
first post on here, looking for some help with room acoustics-
I have a Tag Mclaren av32r pre-amp for stereo and av duties-source is Tag Mclaren dvdflr32, Amp is Tag Mclaren 100x5r monoblock,this feeds Neat Mystique fronts,Neat motive centre and Neat critique rears, Sub is Acoustic Energy.


Please refer to picture-
Room is 484cm long, 287cm wide, 231cm height and its a bedroom!!!!!!!
Floor is wood covered with thick underlay and a medium thickness carpet, two walls are block and brick (window,rear) and two walls are partition with plaster board and wooden frame(front and right side).
Problems are a bass which seems to be all the same-low bass and mid bass roll into one and sounds bloomy, not much of a soundstage and recessed mid sounds -Vocals swamped!
What would be my best starting point ? i have used bobgolds mode calculator and read Practical Domestic Room Acoustics by Adam P.salisbury  but it doesnt mean much to me at the moment!
thankyou for any replies
« Last Edit: 20 Oct 2008, 08:35 pm by daztag »

bpape

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Re: room help for neewbie
« Reply #1 on: 18 Oct 2008, 01:26 am »
Hi daztag.  Welcome to Audio Circle.

The first thing you can do to improve your overall sound is to get the seating away from the wall behind you.  Sitting against a boundary like that will always yield boomy muddy bass as that's where all the bass builds up.  Try to get at least 3 feet from the wall to your ears if not more.

Next, try to get the faces of your speakers in front of the rack to allow better imaging and less boundary related bass issues.

Lastly, pull your surrounds out of the corners.  Corners are another place where speakers will take on a very boomy nature due to boundary reinforcement.

Bryan

daztag

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Re: room help for neewbie
« Reply #2 on: 18 Oct 2008, 02:19 am »
Thankyou for your reply bpape

My apologies but the diagram and my explanation might not have made it clear- my seating position is on the bed!!!(black rectangle is the bed, red shade is seating area on bed). I know its not ideal but i don't have any other listening room in my house, it's the same thing with speaker placement-they cannot be moved forward any more because of two opening doors either side of speakers-see new pic-

old picture but layout is the same.The front speakers are almost level with rack (slightly back)-my diagram is a bit rubbish again.

The surrounds could be moved out more but it's 2 channel music i am mostly trying to improve. I was thinking of putting bass traps somewhere and maybe a couple of diffusers on side walls at first reflection point or is this totally the wrong way to go about things?
« Last Edit: 18 Oct 2008, 03:42 am by daztag »

Mag

Re: room help for neewbie
« Reply #3 on: 18 Oct 2008, 03:41 am »
I would try moving your bed to the middle of the room up against the wall with the window, listening from middle of the bed. Move your TV rack perdpendicular to the bed on opposite wall from window. Place your mains about 8' apart. And I would place your surrounds in the corners of the same wall.

Your thinking, shouldn't the surrounds go to the side or rear?  They will work in the corners because of wall reflections.

Your sub, I would move to where your rack is now and face it to the opposite wall at the other end of the room. This is because bass waves are wide and you want to give the wave area to develop down the length of the room before it gets reflected back off the walls. You'll get reflections off the side wall, but I think that's a better option than facing it across the width of the room.

You could turn the bed horizontal up against the window, But I don't think that'll give much room to walk past your bed with the TV rack in place.

Glenn K

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Re: room help for neewbie
« Reply #4 on: 20 Oct 2008, 01:41 pm »
Hi daztag.  Welcome to Audio Circle.

The first thing you can do to improve your overall sound is to get the seating away from the wall behind you.  Sitting against a boundary like that will always yield boomy muddy bass as that's where all the bass builds up.  Try to get at least 3 feet from the wall to your ears if not more.

Next, try to get the faces of your speakers in front of the rack to allow better imaging and less boundary related bass issues.

Lastly, pull your surrounds out of the corners.  Corners are another place where speakers will take on a very boomy nature due to boundary reinforcement.

Bryan

I like all of that, but wouldn't flipping the room 120 degrees be better? Then reset up?

Glenn

bpape

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Re: room help for neewbie
« Reply #5 on: 20 Oct 2008, 02:57 pm »
It'd be great - but don't think the bed would fit at the other end based on the diagram.

Bryan

daztag

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Re: room help for neewbie
« Reply #6 on: 20 Oct 2008, 08:43 pm »
Room moving is a no-go i'm afraid due to girlfriend would kill me! :(
Subwoofer can be moved, i'm just loooking for some advice on bass trap placement and maybe a few panels put into the right places, maybe absorb the rear wall to minimize reflections?
thankyou for replies, like i say im new to all this and reading different posts can sometimes confuse a neewbie :scratch:
regards all
daztag

bpape

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Re: room help for neewbie
« Reply #7 on: 20 Oct 2008, 09:17 pm »
If the room must remain as is, then the best likely place to control bass boominess is in the rear wall/ceiling intersection and directly behind the listening position.

Bryan

Glenn K

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Re: room help for neewbie
« Reply #8 on: 21 Oct 2008, 12:32 pm »
Quote
Room moving is a no-go i'm afraid due to girlfriend would kill me! Sad

That is why men have knees!!!!!!  :thumb:

Glenn