About to start acoustic treatment please help - AVS Forum
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post #1 of 8 Old 04-25-2012, 04:04 PM - Thread Starter
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Before I go spending money and learning lessons the hard way, can you help me to optimize my room for movie listening

I have a 10' x 20' (#'s are not exact it's a little larger than each)
and Klipsch RF-82 II fronts, RF-64II center, RF62 surrounds, and SVS CS-29+
basement room converted to a HT back wall is concrete of house, Left wall is concrete of house, with 1 layer of DW in front (easier to paint/wall paper), right and front are DW (about 4 layers of 1/2" DW w/ GG)
ceiling is 3 layers of DW w/GG
floor is laminate w/ 5'7' area rug from speakers to microfiber couch in the center.
Behind the couch (i.e. back of HT) is pretty cluttered w/popcorn machine, Infrared sauna, and elliptical

thx!
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post #2 of 8 Old 04-25-2012, 05:16 PM
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Ya, going through the same thing here. I would read through the Acoustic Treatment thread and some of the theater threads. Lots of good ideas there. I also bought the book from http://thehometheaterbook.com/. Great book with lots of valuable info above and beyond the acoustic treatment section. Most valuable resource, besides the forums, I have found so far.

I am still learning so I won't even suggest treatment options. Much smarter folks on here when it comes to that.

Good luck!

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post #3 of 8 Old 04-25-2012, 08:50 PM - Thread Starter
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thanks,
I did read through a bunch of the AVS acoustic treatment thread, but got overwhelmed after seeing 250 pages
and no wiki style summary/consensus
or how to.
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post #4 of 8 Old 04-25-2012, 10:52 PM
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Ya, I was hoping for the same thing. I read through the entire thread and came away with the fact that it is different for every room. And it depends on how far you want to take it. If you want it perfect, you can pay someone like Dennis to design your room for you and provide you with a detailed plan. Expensive, but then you don't have to do any research...he'll do it all for ya.

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post #5 of 8 Old 04-26-2012, 12:48 PM
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from another thread I made....

Quote:
Side note:
I have this general suggestion for those wanting to learn about acoustics:

A) read this Acoustics/Treatment Reference Guide , via gearslutz, its a easy read in layman terms, starts you off with basics and good foundation with practical discussion. Studio acoustics and Home Theater acoustics.
From that, simple/straight forward advice via Jens Eklund:
Quote:
1. Learn how to make measurements: REW - Room EQ Wizard Home Page
Don't do anything without measurements.

2. Define your MLP (Master listening position). Confirm with measurements.
(Mike R modified for HT viewpoint)

3. Identify and treat your modal and SBIR - Speaker Boundary Interference Response related issues and educate yourself about different bass-absorbing techniques.
Other info: SBIR by Bryan Pape

4. Treat areas that otherwise creates early reflections.

5. If the room is big enough, add diffusers (but read up on how to use diffusers before going nuts).

Always base your decisions regarding different treatment, on measurements. Avoid thin porous only absorbers (including wall to wall -carpet, drapes etc.) unless a measurement indicates the need for it.

B) Knowing that for best audio/sound in a listening room, these parameters are tackled in prioritized order:
1. Speaker location, 2. Listener position, 3. Acoustic treatments, 4. Electronic correction.
Understand the small room acoustic model you will follow.
Looking at this link, everyone can see visually the various small room models, it's 7 pages from the book "Acoustics and Psychoacoustics Applied"
http://eetimes.com/design/audio-desi...n?pageNumber=0

C) Then I'd say read the first 4-5 pages of Acoustical Treatments Master Thread , there are 200+ pages there but first 4-5 cover much of the stuff

D) Then, post into link given in C your room size/etc and ask your Q's there, if not already answered by doing A), B), and C) above

E) If you have desire for more knowledge:
-read one of many books out there, a great 1st book is "Master Handbook of Acoustics" by F. Alton Everest, a perfect follow-up book is "Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms" by Floyd Toole.
-study Ethan Winers site, http://www.ethanwiner.com/acoustics.html
-Become familiar with the different small room acoustic models for home listening spaces
-This is also a 101 read on Room Acoustics, http://www.crutchfield.com/learn/learningcenter/home/speakers_roomacoustics.html
-SAE Home Acoustics info site has many definitions and explanations http://www.sae.edu/reference_material/audio/pages/fullindex.htm
-There are many other sites on the web, like
........One of the first ones, StudioTips small room acoustics forum http://forum.studiotips.com/index.php,
........Acoustical measurements defined Rives audio http://www.positive-feedback.com/Issue12/rives2.htm,
........RPG Acoustics Library papers http://www.rpginc.com/news/library.htm, etc.
-Be careful of info overload all at once

F) Measurement info/threads:
-Get the hardware side of REW down quickly, this thread by member omegaslast dummy's guide on setting up REW and his blog http://polaraudio.blogspot.com/2012/01/calibration.html easy 101 read with pictures to walk you thru the mechanical of set-up and taking measurements
-Highly recommend Nyal Mellor's site, http://www.acousticfrontiers.com/Aco...surements.html , and a very detailed/helpful white paper http://blog.acousticfrontiers.com/st...ist.%20Rms.pdf
-Room Measurement & Treatment by "fotto" (Floyd)
- Envelope Time Curve - ETC - Impulse gearslutz thread
-Using energy time curve for acoustic analysis: by "mtbdudex" (Mike R)
-Basic acoustic measurement primer v2.1 (via gearslutz "DanDan")
-http://www.realtraps.com/art_measuring.htm

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post #6 of 8 Old 04-26-2012, 02:12 PM
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Quote:
Originally Posted by mtbdudex View Post

from another thread I made....

There goes my whole night! Thanks for the info, this is perfect.

My home theater build thread
LEVEL 4: Center for Entertainment
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post #7 of 8 Old 04-26-2012, 03:20 PM
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Save yourself the heartache - refer here

Peter the Greek

Downunder Theatre MkII
Redefining snail pace construction
"what is worth knowing is difficult to learn"

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post #8 of 8 Old 04-26-2012, 06:42 PM
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Quote:
Originally Posted by Elill View Post

Save yourself the heartache - refer here

Depends on the goal for the person.
If they are a DIY'er and want to learn and do themselves, then for those types get some education and DIY.

However, if they just want to get the task done, then spend $600 for a plan - a great deal btw, and either contract it out or DIY for the actual treatments.
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