franman wrote on Thu, 26 October 2006 00:50 |
I think this could be a very good place to "cut the corner" as we discuss here regularly. .. Yes, give up three feet of space, frame out a flat cover.. Hang some Insulation blankets up in the space and friction fit some Rigid Insulation into the framing. Stretch fabric over the whole shebang and voila!! Broadband bass trapping... |
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I'm assuming this is a performance room???? Am I correct? |
ruffrecords wrote on Thu, 26 October 2006 05:17 | ||||
Excellent, sounds like a really elegant solution. I am not sure what you mean by 'Insulation blankets' - are we talking loft insulation or bedding
Performance and control in one. Presumably in bass terms what's good for one is good for the other? Ian |
franman wrote on Tue, 31 October 2006 00:16 |
I would hang the regular insulation batts from above, as opposed to laying them on top of the rigid... This ensures that the cavity is relatively full (over time) with porous absoprtion |
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Yes, 40.8" would be 1/4 wavelength at 83 Hz... you're punching the right bag!! How did you "measure" the resonances at these frequencies?? Sound level meter?? |
franman wrote on Wed, 01 November 2006 03:00 |
Just be careful "measuring" modes this way... if you move the mic 1 foot things will change. You really have to listen to confirm what you hear makes sense with what you measure... It is natural (and necessar) for any pure sine wave tone to behave as peaks and valleys throughout a room.. It's the distribution of the modal peaks and valleys that makes a room sound natural in the LF.. |
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In your case Ian, we are talking about a broadband trap and it will help tighten up all the LF in the room.. you really can't go wrong. I'm just reiterating what I always say: use your ears... they are your best test gear!! |
franman wrote on Sat, 18 November 2006 03:41 |
Bring it on Ian.. we're all waiting with baited breath for your report!!! |
franman wrote on Sun, 19 November 2006 20:27 |
Ian, Looking good.. but what happened to the hanging Insulation blankets above the flat layer?? We did discuss that (above).. I checked.. |
franman wrote on Mon, 20 November 2006 00:40 |
Yes.. that is the stuff... but instead of just laying it in there (where it will settle over time) we prefer to hang "batts" (pieces of insulation) from the hard ceiling above, like hanging "blankets"... make sense? |