basic room accoustics..help design my ht room :)

[JinMTVT]

As a few of you know,
i am in the process of building a new house,
wich will contain a few different audio systems.

One of wich is my HT room in the basement...

Now i need help for the room itself!
i have a 26' by 20' square space for it,
and i can do almost anything "crazy" i want with the walls

please keep in mind the following:

- surround system will consist of nearfield line arrays,
and an IB sub bass array of a few 18-21"

- house is build completly with ICF
( foam isolated concrete walls and ceiling on this room)
and i would like to do the walls with this material

- front screen width is of 100", so it require a minimum of front size for screen + mains + subs


here is a picture of a quick layout of what would be a possibility ...

An externally hosted image should be here but it was not working when we last tested it.

i'd also like advices on possible reflection treatments ..

 

[planet10]

26 x 0,618 = 16
16 x 0.618 = 9.9

Do you have room for 9' 10" ceilings

(9.618:1:1.618 is the AES recommended room dimension ratio....

dave

 

[JinMTVT]

9' ceiling for the front half
8' ceiling for the rear half

what about those AES measurements?
i don't quite understand the ratio you are quoting

i knew that you'd be the first to reply to this thread Dave

what do you think of the small angles i gaved to the walls in this quick sketch ?

 

[planet10]

9' ceiling for the front half
8' ceiling for the rear half

average ceiling = 8,5 x 1.618 = 14.25
14.25 x 1.618 = 23

So your avaerage dimensions should be 23x14.5 x 23

That leaves a whole bunch of unised space --- use it for your woofers or...

almost as good

8,5 x 1.732 = 14.75
14.75 x 1.732 = 25.5

(still leaves ~850 ft^3 for woofers)

what about those AES measurements?

AES did a study to figure optimal ratio of LxWxH and ended up with a classic golden ratio box.

what do you think of the small angles i gaved to the walls in this quick sketch ?

Angled bits are good.

dave

 

[sreten]

http://www.bbc.co.uk/rd/pubs/archive/pdffiles/architectural-acoustics/bbc_guideacousticpractice.pdf

Hi,

might give you some ideas, angled walls reduce flutter echo,
may not be needed depending on the acoustic treatment.

/sreten.