Originally Posted by absolootbs
ok i cant' stand it anymore... i see you say these types of things all over this forum, but i've never seen you post a single bit of proof. have you ever done any actual measurements, or can you provide links to any data from those who have, which would back up your statements? i don't necessarily doubt it, as i have samples of several different types of spandex, as well as a centerstage xd sample, and some burlap from diy acoustic treatments i did, and all seem about the same with the "breathe through" test, which is supposedly a rudimentary test of AT-ness. but i also feel that if someone is going to consistently state something as fact, they should have some proof to back it up, and whether i doubt it or not, i almost never 100% believe something until i see proof.
Such experience should also govern your own assumptions...as they may be, but not tend to make you feel obliged to jump out and in with a post that starts out like this one did. I myself have been involved with A/V for 32 years and LONG before AT screens were even something to be considered, spandex was used to replace worn Speaker grill cloth, and it was effectively tested as far back as 1974 by none other than Julian Hirsch in DB magazine.
While you might not be old enough to even have heard of him...or that magazine, I am...I have...and I recall that the outcome of the testing showed that basic Spandex was a "better' material than 95% of all such used. Of course much that was used was indeed akin to a rough weave such as Burlap. (...mostly for cosmetics to match "Wood Grain' speaker cabinet designs...)
So although I personally have done no such testing, I do in fact speak from a acquired knowledge that obviously transcends your own. Just as my experience having produced hundreds of DIY Screens in tandem with about every PJ out there allows me to make statements about performance that are more definitive that others can...or would dare to. I can reason out that the same results showed as facts a full 36 years ago for use in Grill Cloth Speaker applications will stand up as being just as valid & true as far as the use as a AT Screen material.
I see your comments as only an echo of the same type of baited commentary that a relative few others tend to offer, because they seem to take pleasure at disputing anything someone posts that is not accompanied by a White paper.
Be advised that on this DIY Forum we practice a bit more congenial form of intercourse these days, and those who are prone to do otherwise either have left, or have mitigated their responses with a more courteous discourse.
if you don't have proof, well then i guess i'll be the one to either confirm or refute. i've already got decently reliable full spectrum measurement gear that i use for other things (mobile pre and emm-6) sans mic stand which will be arriving next week. once that gets here, i was already intending to do some measurements of all the supposedly AT materials i have and see how they compare in my particular environment. i'll be sure to post results as soon as i have them.
Then you should/ or should have done exactly that, then come on either with a conformation...or loaded for Bear with a rebuttal when...and if such was justified.
THAT you intended to do so, and in lue of that, asking a simple question such as "Can you point to any verifiable AT tests made on Spandex?" should have been the extent of your initial response, instead of posting what was both a semi-derogatory expression of your "I can't stand it anymore..." directed at me...and not the material in question.
So please, do go right ahead and contribute to....not detract from the atmosphere of sharing this Forum is all about. I think it would be wonderful for you to add some accurate information to supplement the assumption that spandex will serve as a very viable AT Screen application. For certain if such is validated to the satisfaction of those who tend to doubt, it will mean a VERY significant savings over any such Mfg offering.