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Ethan...why is burlap so recommended?

Posted by gonefishin (A) on November 15, 2005 at 21:15:19

In Reply to: Re: Corner bass traps - Round or Square? posted by Ethan Winer on November 15, 2005 at 12:46:44:

Hi Ethan,

First I'd like to thank you so much for helping me prove that my wife is still in love with me after 13+ years. Our basement is slowly getting filled with large panels and bass traps spread all around. She just smiles and winks ;) *maybe she just feels sorry for the poor crazy guy she married :p)

Really though. Thanks so much for your participation in these audio forums and for your FAQ pages. Jon Risch too...thanks.

Ok...back to the question. What's the facination with burlap fabric being recommended to cover panels and traps?

I know that you want something that isn't going to reflect any high frequencies...but why the burlap recommedations?

Near as I could find out...Many times todays Burlap fabric is a desnse, yet open weave of 100% cotton. If you would blow thru it you may encounter a fabric that does allow for air to pass. Yet, similar to a screened window...the rest of the material is quite course and dense. A screen window is actually over 70% closed...the "weave" is what allows for the passage of air.

Now...if you could actually get some real burlap (created from jute, hemp or flax fibers) you actually have a very course strong fiber. I really don't see how real burlap would be a good choice either???

I'm not trying to start any flames...I really do wonder if there is reasoning or a science behind the burlap recommendation...and which "burlap" this recommendation is made for??? Real or cotton?

Then you have recommedations for some slighlty more expensive acousticaly transparant fabric. Is this simply material similar to speaker grill cloth? (for a side note...I certainly can't imagine any speaker grills being covered in burlap)

But if this is fabric similar to grill cloth...aren't you then talking about a 100% polyester fabric with a very loose interlocking weave? If so...you can get these in varying thickness and weave...you can also get the polyester fabric in anything from an extreme dull "sheen" to a high gloss type silk sheen. But wouldn't an extremely light thread and loose 100% polyester interlocking dull weave perform well?

Then you have a comaprable light thread with a loose interlocking weave in 100% cotton. Which is much lighter and looser than many of the fabrics out there today that are being badged as "burlap".

Even still...if real burlap is recommended...why?

*ok...I'll duck now ;)*

thanks,

dan
CLick the picture below to see my system

enjoy the music!

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