Listening room construction

[JFCMan1]

Hi, I could not find where to fill in my profile so I'll do it here: Been listening to music (Classical, Big Band, Jazz, Blues, Rock, Country, Blue Grass, Pop, etc.) for almost 60 years (love it all). I live in Metamora, Illinois, USA. For the last 45 years, I've been listening to music through a Sansui QRX 5500 out to 4 Sansui 2700s with excellent results (I think)! However, I'm about to retire and I 've been toying with the idea of a dedicated sound listening room. I'll be in the "Fixed Income" crowd, and funds will be limited, so the George Cardas "Golden Trapagon" idea really appeals to me. Now, I know nothing about Geometry, Algebra, and all the other mind-numbing (to me) math that accompanies the information about listening rooms in the 'net, but I've come up with a "scaled down" model of the Cardas idea, an (8Hx13W) (26'L) (10'H x 16'W) room. Because of financial and space constraints, I've downsized Mr. Cardas plan, and came up with a room that is 5'H x 8'W (front wall), 6"H x 10'W (back wall), and 13'L (if I use the 5'H x 8'W front wall's measurements), or 16'L (if I use the 6'H x 10'W back wall's measurements). The math I used was based on using a lower Fibonaci sequence (5, 8, 13) for my calculations, instead of Mr. Cardas 8, 13, 21 sequence. My question is, will this work?

[xSpace]

I invite you to read this page: http://buildthisroom.com/picking-room-r ... ed-ratios/

Then see if you still want to go this route. What you are asking is basically "I have a piece of string...how long is it?"

After reading the above linked page you may consider that this is not only NOT the most important thing to consider but is only the beginning of many areas that you will be asking questions looking for answers for considerations that you had not even thought of yet.

Let us know if it helps.

[Soundman2020]

Adding to what Brien already said about ratios: there is no such thing as a "Golden Trapagon". It is pure hype. You won't find that term discussed in any reputable text book on acoustics, nor in any published research papers, and you won't eve find the mythical "trapagon" shape mentioned in any textbook on geometry or mathematics. The dimensions of this phantom shape do not even match any recognized concepts in acoustics. It is pure gobbledygook, invented by someone to try to make a useless concept appear intelligent.

If you don't believe me, google the question "What is a trapagon?". The ONLY hits you'll find there lead back to the original website you mentioned and its mangled concepts, or they lead to discussions about it by real acousticians, who unanimously dismiss it.

I certainly would not base an acoustic design on a non-existent concept.

If you want to base your room on a fictitious concept with a presumptuous but meaningless name, then by all means make it a "Golden Trapagon". But if you want good acoustics in your room, base it on one of the real, tested, proven concepts of acoustics, such as those listed at the link Brien provided for you.

- Stuart -