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Audio and Video Talk
Acoustics & Room Treatment
Corner Basstraps (Chunk Traps)
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<blockquote data-quote="perfectionist" data-source="post: 224907" data-attributes="member: 1603"><p>Ethan Winer uses 87.5 kg/m3 Owens Cornering for his bass traps.</p><p>The only reason why he places FRK is to reflect high frequencies back into the room, so for corner traps this isn't really necessary.</p><p>The wider the trap the more effective it will be and the deeper it is the more effective it will be at lower frequencies.</p><p>You should consider using U Therm 8 boards as they will be a lot more effective. </p><p>I asked Lorinda Hilton to send me the NRC values of the U Therm boards and here's what she sent me. What one is looking for is a NRC value of one or higher in the lowest frequency range as possible. So for example the U Therm 6 board at 70 mm thick absorbs 99% of the 200 Hz frequency that hits it. These NRC value's for U Therm boards are slightly better than the equivalent product to Owens Cornering that is made locally. Also take note that a doubling of the board produces more than a doubling of the absorption co-efficient. </p><p></p><p><a href="http://imageshack.us/photo/my-images/811/nrcvalues.png/" target="_blank"><img src="http://img811.imageshack.us/img811/7015/nrcvalues.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p></blockquote><p></p>
[QUOTE="perfectionist, post: 224907, member: 1603"] Ethan Winer uses 87.5 kg/m3 Owens Cornering for his bass traps. The only reason why he places FRK is to reflect high frequencies back into the room, so for corner traps this isn't really necessary. The wider the trap the more effective it will be and the deeper it is the more effective it will be at lower frequencies. You should consider using U Therm 8 boards as they will be a lot more effective. I asked Lorinda Hilton to send me the NRC values of the U Therm boards and here's what she sent me. What one is looking for is a NRC value of one or higher in the lowest frequency range as possible. So for example the U Therm 6 board at 70 mm thick absorbs 99% of the 200 Hz frequency that hits it. These NRC value's for U Therm boards are slightly better than the equivalent product to Owens Cornering that is made locally. Also take note that a doubling of the board produces more than a doubling of the absorption co-efficient. [URL=http://imageshack.us/photo/my-images/811/nrcvalues.png/][IMG]http://img811.imageshack.us/img811/7015/nrcvalues.png[/IMG][/URL] [/QUOTE]
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Audio and Video Talk
Acoustics & Room Treatment
Corner Basstraps (Chunk Traps)
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