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Acoustic problems (bass dip)
Old 16th August 2007
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Igotsoul4u's Avatar
Acoustic problems (bass dip)

I just setup my little project studio and have figured out the room issues to some degree. The most obvious problem is a big hole in the bass (40hz-200hz) How would I go about fixing the hole. It doesn't have to be perfect, but right now its making the setup borderline non-functional for mixing. I'm sick of running to the car and other check points. Thanks.
Old 16th August 2007
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amishsixstringe's Avatar

Bass traps and moving your monitors around usually helps.

Old 16th August 2007
Gear Guru
Glenn Kuras's Avatar
Here are a couple things to get you started.

1) Make sure your monitors are firing down the longest wall. You would be facing the shortest wall.
2) Put your mix spot (where you sit) 38% of the room length.
3) Treat as may corners as you can with bass traps that use rigid fiberglass or mineral wool.

Check out GIK Acoustics - Education for room set up and how acoustics would work within your room.

Old 16th August 2007
Gear Nut

I'm sure this has been asked over 100 times, but I searched and I get nothing but weird random threads...

What is software I can use to measure the frequency response in my room (the diagnostic wave graphs that have been posted). What are the basics to performing this test? Mic selection and placement? And what are the basics of reading and diagnosing the results.

I have a Macbook Pro and a few mics (condenser or dynamic) to choose from.
Old 16th August 2007
Gear Guru
Ethan Winer's Avatar


Originally Posted by Igotsoul4u View Post
The most obvious problem is a big hole in the bass (40hz-200hz)
I'll bet you $100 the problem is even worse than that. In order to see the true response in your room you need to measure at a high resolution, like 1 Hz intervals or 1/24th octave. Regardless, the solution is always bass traps. And speaker placement and orientation as was already advised.

Note that time-related problems are just as important as the raw response. This article on my company's site explains more about room measurement and low frequency ringing:

RealTraps - Optimizing Acoustic Treatment using ETF

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