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AUDIO FORUMS >> General Discussion and Support >> Room Size
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Message started by EdwardT on 12/12/23 at 20:43:55

Title: Room Size
Post by EdwardT on 12/12/23 at 20:43:55

What are your opinions on room size, i.e. ratio of sides to ends and ceiling height? I’m thinking of halving my shop and building a nice listening environment inside the quonset hut…maybe 18x14x9…and give enough space to try some dipole designs.

Title: Re: Room Size
Post by The other Lon on 12/12/23 at 21:05:16

Steve drafted a nice paper on this here: https://www.decware.com/paper36.htm

Title: Re: Room Size
Post by EdwardT on 12/13/23 at 13:42:32

Thank you.

Title: Re: Room Size
Post by GroovySauce on 12/13/23 at 13:50:15

Those dimensions are not too bad. You can get fantastic sound from a room with those dimensions.

https://amcoustics.com/tools/amroc?l=18&w=14&h=9&so=false&ft=true&r60=0.6

9 foot ceilings is a great help in getting a better room response. Modes per third has a nice smooth increase.

List of room modes under 100hz. Excluding oblique.

1 31.26 Hz B0 1-0-0 ax
2 40.19 Hz E1 0-1-0 ax
3 50.92 Hz G1# 1-1-0 tan
4 62.52 Hz B1 0-0-1 ax
5 62.52 Hz B1 2-0-0 ax
6 69.9 Hz C2# 1-0-1 tan
7 74.32 Hz D2 0-1-1 tan
8 74.32 Hz D2 2-1-0 tan
9 80.38 Hz E2 0-2-0 ax
11 86.24 Hz F2 1-2-0 tan
12 88.41 Hz F2 2-0-1 tan
13 93.78 Hz F2# 3-0-0 ax
15 101.83 Hz G2# 0-2-1 tan

Title: Re: Room Size
Post by EdwardT on 12/13/23 at 21:37:31

That’s a way cool link, thank you.

Title: Re: Room Size
Post by jpv on 12/14/23 at 20:11:21

I like the 9 foot height. The problem I see is that the length of 18 is a multiple of the 9 foot height. If you could go higher that would be good. So shorten or lengthen the room if you can go higher.
Having a dimensions that are divisible into another will make the modes harder to tame. My room is 19 x 14 x 8 and it does sound good (lots of treatment).