help with further construction off cinema / music room sloped front and rear wall - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #11 of 78 Old 04-15-13, 02:11 PM Thread Starter
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Re: help with further construction off cinema / music room sloped front and rear wall

Bryan thanks a lot for your feedback.
I will continue building in steps starting with the front wall and make mesearements between each steps and post here.

It would be great if you can give me further advice between each steps.
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post #12 of 78 Old 04-15-13, 08:08 PM
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Re: help with further construction off cinema / music room sloped front and rear wall

Do you have a picture of his room or crude drawing at least?

"Music is the space between the notes"
[T]o talk well and eloquently is a very great art, but that an equally great one is to know the right moment to stop.
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post #13 of 78 Old 04-16-13, 09:39 AM Thread Starter
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Re: help with further construction off cinema / music room sloped front and rear wall

For pics, please see first page of this tread.
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post #14 of 78 Old 04-16-13, 10:01 AM
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Re: help with further construction off cinema / music room sloped front and rear wall

Ok sorry. You were talking about the room earlier then mentioned "his," so I thought maybe there was another room you were doing. Was just confused. Understand now.

"Music is the space between the notes"
[T]o talk well and eloquently is a very great art, but that an equally great one is to know the right moment to stop.
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post #15 of 78 Old 04-20-13, 07:34 AM Thread Starter
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Re: help with further construction off cinema / music room sloped front and rear wall

Installed two superchunkcks in front.
New measurement 1/24 octaaf smoothing.
Altough i think sound has improved, i do not see much progress in the measurement.

All advice is much appreciated.
Attached Thumbnails
help with further construction off cinema / music room sloped front and rear wall-p1030260.jpg  

help with further construction off cinema / music room sloped front and rear wall-fronts-sub-24-octaaf.jpg  

help with further construction off cinema / music room sloped front and rear wall-2de-waterval.jpg  


Last edited by mikesp1; 04-20-13 at 08:42 AM.
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post #16 of 78 Old 04-20-13, 09:09 AM
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Re: help with further construction off cinema / music room sloped front and rear wall

waterfalls looks pretty good. 30 will be tough to address. The ply across the front may be resonating.

Looks like the overall sub level is too high.

Pull the mic forward or back a foot and see what happens to the null around 120

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post #17 of 78 Old 04-20-13, 09:33 AM Thread Starter
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Re: help with further construction off cinema / music room sloped front and rear wall

Tommorow i will try to adres the 120hz null and post here.
Maybe i can tame the 30 hz region by putting one of the subs behind the listening position and leave the other in place, will try tommorow.

What about 120 till 800hz range, i see many dips aswell?
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post #18 of 78 Old 04-21-13, 07:21 AM Thread Starter
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Re: help with further construction off cinema / music room sloped front and rear wall

front wall is treated New measurements:
Attached Thumbnails
help with further construction off cinema / music room sloped front and rear wall-waterval-tot-20000hz.jpg  

help with further construction off cinema / music room sloped front and rear wall-decay-20000hz.jpg  

help with further construction off cinema / music room sloped front and rear wall-rt60.jpg  

help with further construction off cinema / music room sloped front and rear wall-spectogram-20000hz.jpg  

help with further construction off cinema / music room sloped front and rear wall-p1030263.jpg  


Last edited by mikesp1; 04-21-13 at 07:46 AM.
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post #19 of 78 Old 04-21-13, 07:23 AM Thread Starter
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Re: help with further construction off cinema / music room sloped front and rear wall

mic 4.2 foot to the front. this is middle of room!
120Hz problem is smoothed out, altough this position gives best sound this seating position is not doable for me bacause of too close to the screen.
Its strange that in my room sitting in the exact middle gives best overall pereformance, i think it has something to do with the sloped ceilings.
I could install a new backwall without sloped ceiling but that would decrease room size by aprox 3.2 foot, maybe the experts can tell me to do so or not?
There is also a doorway without door on the right side of the couch, i can remove that doorway?
Attached Thumbnails
help with further construction off cinema / music room sloped front and rear wall-mic-1.3m-front.jpg  

help with further construction off cinema / music room sloped front and rear wall-p1030264.jpg  


Last edited by mikesp1; 04-21-13 at 07:42 AM.
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post #20 of 78 Old 04-21-13, 07:30 AM Thread Starter
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Re: help with further construction off cinema / music room sloped front and rear wall

One sub behind couch in red.

Backwall is made of one layer drywall, you can see in the graph that its resonating on multiple frequencies when i place one sub behind the couch.
Maybe this wall is making cancellations with frontwall and therefor best performance is in middle of room?
Attached Thumbnails
help with further construction off cinema / music room sloped front and rear wall-1-sub-behind-couch.jpg  


Last edited by mikesp1; 04-21-13 at 08:59 AM.
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cinema , construction , front , music , rear , room , sloped , wall

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