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<blockquote data-quote="Greg Plouvier" data-source="post: 40400" data-attributes="member: 476">Re: Acoustic treatment alternativesBrad - thanks for drawing attention to that. The tubes are coated with latex paint that contains fire resistant additive on both sides and edges. Do I have a flame spread number? - no. This method has been used in very large facilities all over the US and Canada including new builds so there is acceptance by building code officials. The problems with the absorptive materials are, as you pointed out, that to gain an acceptable amount of absorption at frequencies below 500Hz(where the problems inevitably lie) the panels would need to be ridiculously thick. Also those types of panels don&#039;t stop bounce very well - like the bounce off the back wall that comes back to the stage. I&#039;ve seen facilities spend $20K to &quot;fix&quot; that kind of problem only to see it slightly reduced and the room become lifeless. I&#039;m not claiming expertise in this area as I am still learning and the safety of souls in buildings is certainly important. I do think the tube solution is a cost effective and acoustically effective solution. They sometimes need to be combined with a little absorption and bass traps - usually in larger rooms.Greg - where are you located?</blockquote>

[QUOTE="Greg Plouvier, post: 40400, member: 476"] Re: Acoustic treatment alternatives Brad - thanks for drawing attention to that. The tubes are coated with latex paint that contains fire resistant additive on both sides and edges. Do I have a flame spread number? - no. This method has been used in very large facilities all over the US and Canada including new builds so there is acceptance by building code officials. The problems with the absorptive materials are, as you pointed out, that to gain an acceptable amount of absorption at frequencies below 500Hz(where the problems inevitably lie) the panels would need to be ridiculously thick. Also those types of panels don't stop bounce very well - like the bounce off the back wall that comes back to the stage. I've seen facilities spend $20K to "fix" that kind of problem only to see it slightly reduced and the room become lifeless. I'm not claiming expertise in this area as I am still learning and the safety of souls in buildings is certainly important. I do think the tube solution is a cost effective and acoustically effective solution. They sometimes need to be combined with a little absorption and bass traps - usually in larger rooms. Greg - where are you located? [/QUOTE]

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