Is my room a square or a rectangle?

[foamboy]

Hello. I am going to embark on some spkr placement tests and I would like to try some formulas that I have found. However, I don't know if from the acoustician point of view if my room would be considered more of a square or a rectangle.

Room dimensions are:

131" w
152" d
108" h

Thanks for any insights.

fb

[Ethan Winer]

A square has two dimensions the same. So you have a rectangle.

--Ethan

[Glenn Kuras]

Originally Posted by foamboy

Hello. I am going to embark on some spkr placement tests and I would like to try some formulas that I have found. However, I don't know if from the acoustician point of view if my room would be considered more of a square or a rectangle.

Room dimensions are:

131" w
152" d
108" h

Thanks for any insights.

fb

I have seen designers use 5% as it being "square". So lets say a room is 11x12 then that would be more or less "square". But what really matters is what the graph says after testing the room. I would still start by facing the short wall.

[Rod Gervais]

I would agree that a 5% variance is quite small (I would never design a room with a variance that small)- however - that would mean room dimensions more like 11x11'-6 9/16" (12' would be a 9.09% variance)

In this case, with these dimensions you have the following (ran this through the mode calculator at Bob Golds)

Room Ratio: 1 : 1.21 : 1.4
R. Walker BBC 1996:
1.1w / h < l / h < ((4.5w / h) - 4): Pass
l < 3h & w < 3h: Pass
no integer multiple within 5%: Pass
Nearest Known Ratio:
L. W. Sepmeyer: 1965 - 1 : 1.14 : 1.39

Not a bad room to end up with if that is what you have to work with

I agree with Glenn on both counts - set up shooting the long way into the room - and the true test is when you're all finished. Although I have an easier test - if the music translates to the real world - your room is good.

Rod

[foamboy]

Originally Posted by Rod Gervais

I would agree that a 5% variance is quite small (I would never design a room with a variance that small)- however - that would mean room dimensions more like 11x11'-6 9/16" (12' would be a 9.09% variance)

In this case, with these dimensions you have the following (ran this through the mode calculator at Bob Golds)

Room Ratio: 1 : 1.21 : 1.4
R. Walker BBC 1996:
1.1w / h < l / h < ((4.5w / h) - 4): Pass
l < 3h & w < 3h: Pass
no integer multiple within 5%: Pass
Nearest Known Ratio:
L. W. Sepmeyer: 1965 - 1 : 1.14 : 1.39

Not a bad room to end up with if that is what you have to work with

I agree with Glenn on both counts - set up shooting the long way into the room - and the true test is when you're all finished. Although I have an easier test - if the music translates to the real world - your room is good.

Rod

Rod,thanks for the analysis and the encouragement. I have been a bit hopefull as to my particular situation,which is why I started this thread..

Optimum Room? Dare I Hope?

It turns out that moving my spkrs around has made a difference,at least in the initial listening stages. I do feel more confident that mixes will start to translate better.

As to Ethan's response....yes I am well aware of the traditional defintion of a square,but hey,we're talking acoustics and Glenn's response is exactly why I posted such a question. No matter how obvious anyone might believe the answer to that question to be.

Thanks again for the insight and help.

fb