I know this is pretty old but I remember testing super chunks vs straddled panel with loose fluffy in for low frequency and the latter performed better.
How I built my bass traps (superchunk method)
Originally posted at johnlsayers.com, topic 7278.
Do you have the test results from that? I'm assuming you'd have an MDAT file with the "before" measurements, then the "after" measurements for both cases separately? That would be convincing proof. It's rather had to believe that a couple of inches of pink fluffy would out-perform 30" of OC-703. I'd really like to see the proof of that. - Stuart -I know this is pretty old but I remember testing super chunks vs straddled panel with loose fluffy in for low frequency and the latter performed better.
Ah yes, I thought I might be able to find them, but it wasn't my computer and I can't find even the images of the mdat files from REW, let alone the jpegs to show it. Frustrating! It was a comparison between superchunks made from RWA45 rockwool and probably 6 inches or so more of loose fluffy with some old bbc panels in front... there are some photos on this very amateur website my Dad wanted made at the time:
http://movingmyrecordingstudiotofrance. ... requencies
From your comments at that time "Our current hanging loft insulation was much larger than the previous superchunks that we had installed in the corners," I would suspect that's the real reason for the better performance! :)
- Stuart -
:D yep most likely : )
But you can also use cells if it does not work because it is a very effective sound insulation.my thoughts on that, from my limited knowledge: having the plastic doesn't affect the functionality of the bass trap, at least for the actual bass frequencies. the 1 or 2 millimeters of plastic sheet has almost no effect on low frequency content. imagine standing behind a plastic painter's dropcloth like the ones i used - it offers almost no sound barrier whatsoever [ SPAM LINK REMOVED- SPAMMER BANNED AND BLOCKED FOREVER ] however, the plastic might function similarly to RFK fiberglass, giving a slight reflection in high frequencies. having the plastic does keep the glass fibers in better than not having it, although that may not be entirely necessary either. now, i may be entirely incorrect - in this case, would someone please put me on the right track? thanks, John
Nope! But nice try! Actually it was a TERRIBLE try. Stupid, dumb, low-life, scum spammers are spotted and deleted here, really fast. And congratulations on joining the list, in first place! bye.But you can also use cells if it does not work because it is a very effective sound insulation.