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OK, I have a huge monsterous dip between 60-80hz in my room. So, one of two questions is this: what is causing this problem, my 10x10ftx8ft room, my futon bed I sit in, or my 3ftx4ft closet filled with clothes and storage units? And question two is, might any of you have any ideas on how to fix it?Thanks for all help!
Steve
Follow Ups:
How might I go about making my own bass trap to help at just those freq? Any sites or links you can think of that would help? Also, any idea on what my closet is doing to my sound, and do you think I should try putting a soundproof door on it? It just has a hollow wood door now.
Bass traps (at least the more linear ones) placed in the corners, will damp all room modes to some extent, and thus will smooth out your response in room, including your problem frequencies (which are sucked out probably even more due to peaks on either side).You don't tune resistive bass traps, or velocity absorbers (big panels or lumps of absorbant material out in the room or on the wall) and Helmholtz resonators, which are tuned to a specific frequency, are too fussy about the exact frequency, and can often do more harm than good.
Some links given in my post, and most of the articles at those URLs' contain further web based references and URL's.
Your closet is probably not doing that much to the FR in the room, or to the sound, unless the door itself is resonating, then if it were, I would seek out a solid core door.
Jon Risch
I shall do further reseach into this and see what I come up with. A friend of mine also suggested putting my sub behind me, so Im going to experiment with that too. He said it made a world of difference, just took some time to get it to match up with out calling attention to itself behind you.Thanks for all your help!
Bass traps and experimenting with speaker placement will help, but it may be that there will always be a certain amount of unevenes in the bass level, your room is just too square.See:
My original DIY Acoustic Treatment Note:
http://www.geocities.com/jonrisch/a1.htm
Jon Risch
Review the link and the other chapters that refer to speaker placement.
Steve,> monsterous dip between 60-80hz ... 10x10ftx8ft room <
That room is too small to get truly great results, but you can make a big improvement with bass traps. Have a look at the Acoustics FAQ, second in the list on my Articles page:
www.ethanwiner.com/articles.html
--Ethan
It's easy to overlook this ability of tube traps, but nulls are caused by waves of the same frequency hitting one another out of phase and cancelling one another. If you soak up some of those waves (and large size traps can be effective down to the frequencies you listed) in one part of the room, you'll reduce those waves' ability to cancel one another.I was surprised to hear more bass at certain frequencies when I first built my tube traps.
Tube traps also work on mid and high frequencies, so they can really help clean a room up. It's hard to be aware of how much your room is coloring your sound until you remove some of it.
Good luck,
Pete
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