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What I need to know before I dive in!

Posted: Thu Jul 08, 2004 2:03 am
by brandondrury
I just finished reading the latest mix magazine with the article that focused on room testing. It seams that making assumptions on what will improve a room's acoustics is not the way to go. He mentioned that corner bass traps will not always solve the problem and sometimes will do absolutly nothing to help fix the problem.

The author did mention that test software was the way to go. I've looked around and this seams to be the best software for the money. (If there is better, please let me know).

http://www.etfacoustic.com/


At the moment, I have enough 4lb Rockwool to kill a bear. I'm not sure what that means, but I have what I believe to be way too much.

I'm not going to get into specifics of my control room at this point, but I do need to know a few things before I begin testing. The room is very close to being symetrical and is in the 3000 cubic feet ballpark. I know bass trapping will be necessary. Are there specifc bass traps that I should go ahead and build before I even begin testing? Or should I simply start testing and from there plugin my numbers into a given formula?

Another thing, what is the best to go when it comes to using a microphone for testing purposes? With the studio I have a number of microphones, but I doubt any of them have anything resembling flat frequency response. I hate to buy something that is just going to collect dust after I finish my room, though.

Should I buy a test mic? Is there is high quality recording microphone that just so happens to be a great test mic? (For example, if an AKG 414 was a great test mic, it would be great because I could use it after the testing was over).

Basically, there is not much competition in the studio realm where I live. At the moment my stuff is sounding very competitive with the other studios, but I would like to completely devestate the competition. To me, the fastest and easiest way to achieve this is with the most accurate room as possible for the money. There are real world limitations that will prevent me from achieving major label mixing conditions. Money, the size and dimensions of my room, etc will call probably force me to fall slightly short. I do not intend to be mixing in this room for more than 3 years. I want it to be a great, practical room and then I would like to upgrade.

I'm looking for definite plans for bass traps. It appears that these links are fairly hard to find on this forum, even though I know they are here.
Could someone please post a few links to definite plans for proven bass traps?...with correct formulas.

Brandon

Posted: Thu Jul 08, 2004 2:40 am
by Aaronw
Hello Brandon,

If you haven't done so yet, read the stickies above, and also look under the "Acoustics" forum.

Ethan Winer has several posts here on bass traps. He also has a site: http://www.realtraps.com

The first thing, would to probably measure the room and see what your problem freq's are. This will help to determine what issues you have and you can target them a little easier.

As far as mic's, Earthworks has a nice reasonably flat mic. But they're a little on the pricy side, but a good studio mic for recording too.

Do a search on bass traps, and you'll find a lot of good info, pictures, diagrams, etc here on the site.

Aaron

Posted: Thu Jul 08, 2004 3:30 am
by z60611
This is what I used with ETF5 recently:
Microphone: Beherenger ECM8000
Microphone cable: 20' radioshack microphone cable
PreAmp: Beherenger Euroback UB802

I think the Microphone was about $80 Canadian (seems about right), and the Pre-amp was about another $150 Canadian (very approximate).


There are lots of bass trap designs in "How to Build A Small Budget Recording Studio From Scratch : With 12 Tested Designs "
http://www.amazon.com/exec/obidos/tg/de ... s&n=507846
For a summary of those you can check out the bottom of
http://www.bobgolds.com/AbsorptionCoefficients.htm
in the "Helmholtz absorber examples." section.

For corner trap sabin numbers (imperial) you could check out
http://forum.studiotips.com/viewtopic.php?t=536
http://forum.studiotips.com/viewtopic.php?t=535
http://forum.studiotips.com/viewtopic.php?t=534