Let me know if you want me to post this as a new topic...
I have been reading Tim's post about sealed limp mass membrane bass traps I and would like to build some.
However as I already have some high density Rockwool slabs, which I understand would be too dense for Tim's traps I have proposed a hybrid design and wanted to know your thoughts.
The plan was to build triangular (cross section) sealed traps behind the existing slabs that straddle the corners of the studio.
In the drawing I would seal top and bottom with wood.
Please see pic.
My question to you is as the cavity space is now a triangle as opposed to your rectangular trap how would I work out what frequencies it would attenuate?
Do you think I can also 'tune' them, by adjusting the length of the trap or putting a wood infill to reduce the depth of the cavity.
Also for the materials can you confirm if this MLV will do the jod:- http://www.siderise.co.uk/pdf/produc...rier_188_1.pdf
And what low density rock wool should I use inside the traps, i.e whats the max density I should use?
Hope you can help.