Weird rectangular shaped room

[Edouan]

Hey guys,

I've got a room with a weird rectangular shape, that I want to build a studio in and I'm bothered with the acoustic treatment and its efficiency in a room with these dimensions:

240'x85'x90.6'

I will not use the room for vocal recording, only for beatmaking and mixing. I'd like to be able to get a decent mix.

Am I doomed?

Thank you!

[AwwDeOhh]

240'x85'x90.6'

Is that measured in Feet?

[bitman]

Set your mix position so the longest dimension of the room is behind you for starters.

[jhbrandt]

Edouan,

If those dimensions are inches you have almost 1100 cu. feet. not bad. and the mode distribution isn't too bad either.

You will need the usual bass traping in the corners etc.. but not it's not terrible.

If your dimensions are in cm then you are DOOMED!! Muuuaaahahahahaha!

So, what really are the dimensions?

[Edouan]

I converted them into inches
The real dimensions in m and cm are:

Length: 6.30m
Width: 2.20m
Height: 2.30m

Is it a problem? I heard that if the height and width are similar it can be a real pain setting the acoustics right...

P.S. Here is a quick Sketchup, for you guys to get the idea!
*only included the corner bass traps and a couple of wall panels...


Thnx!

[jhbrandt]

Edouan,

You are on the right track there. Your trapping should be focusing on frequencies from 28Hz to 240Hz and you should be in pretty good shape. Take note that you do not have modal support for the 1/3 octave bands; 31.5Hz, 40Hz, and 63Hz so good trapping and LF decay response optimizing is very important.

Get a good analysis program to help finalize your setup such as Room EQ Wizard which is available free.

There is much more info available from my pubs, GIK Acoustics and Real Traps. Good luck!

Cheers,
John

[Weasel9992]

Ghaaaah...no foam in the corners. tutt You need proper bass traps in those corners, especially in such a small room, ESPECIALLY one that small with repeating dimensions.

Frank

[DanDan]

Those two similar dimensions will cause problems. I suggest you address them in two ways-
Use a cloud over the mix area. Use thickish panels with an airgap and FRK towards the ceiling. HF Mini's are good at this but DIY is fine too. Do exactly the same at the side RFZ postions. Use a mirror to locate these side panels accurately. The thick panels assisted by FRK on the back will be of some benefit in taming vertical and horizontal modes. I didn't see what materials your surfaces are made of. Concrete supports bass modes a lot stronger than drywall. If you have concrete consider using the biggest Corner Traps. The RealTraps product is probably the biggest and most powerful available. 32 inch Superchunks should be nearly as good.
DD