Dallas 2 building material question

[Mr.Mekulic]

Dallas 2 building material question

I have a quick question about the thickness of ply for the above enclosure.
I can’t source 18mm (0.7in) ply where I live, but I can 15mm(0.59in). Is 15mm ply thick enough? Will it ring, or resonate to much? Has anybody built a Dallas2 with thinner ply?
I’m planning to put an extra back board to strengthen the enclosure, and fill all the voids with sand. I’m using ply made of beech, (http://en.wikipedia.org/wiki/Fagus_sylvatica) that is supposed to be the strongest, densest ply around these parts(850kg/m3).
I was planning to scale the plans to 15mm wood so that all the internal dimensions of the enclosure stay the same. Is this the correct way to do it ?

Any feedback from Dallas2 builders is appreciated.

 

[ronc]

Is 15mm ply thick enough? Will it ring, or resonate to much? Has anybody built a Dallas2 with thinner ply?

Shouldnt be a problem, just hold the inside to print dimensions.

ron

 

[mavallarino]

Dallas 2 Design

Hello Mr.Mekulic,

I've seen this Dallas2 in photos on this site. What is the design you are using and where have you found it? Is there a plan with dimentions and information?

Thanks, MV

 

[Mr.Mekulic]

Re: Dallas 2 Design

Hello Mr.Mekulic,

I've seen this Dallas2 in photos on this site. What is the design you are using and where have you found it? Is there a plan with dimentions and information?

The plans are on the bottom of this page (pdf)

http://www.frugal-horn.com/ronhorns.html

http://homepage.mac.com/tlinespeakers/FH/download/DallasII-plans.pdf

That is all I found, if anybody has any other plans please post.