MessianicDreams
New member
So, this one time at bandcamp...
The plan was to build some sort of broad band absorder with a Rockwool-type insulation as an absorber, in a 120cm*60cm frame. The build number was to be a total of 10 traps: 4 for me, 4 for my friend, 2 to sell to make back some of the dosh we spent on them. The design would try to illiminate as much wood as possible from the frame work - this proved challenging. We sarted with 4m80 lengths of 22mm thick and 174mm wide pine, which got cut down to 60cm and 120cm lenghts, and once the holes were drilled out, the pieces were mounted into a simple regtangular frame.
The absorbant insulation was Knauf Crown Roll acoustic paneling, bought in rolls 6.50m*1.20m, 100mm thick. Initially the stuff smelt pretty bad (the odour best described as rotting fish
) but these seems to have disappeared after leaving it outside in the fresh air for a few hours.
The insulation was easy to cut through with a Stanley (carpet) knife. Luckily, the roll seemed to be pre-cut to a width of 2*60cm, which fit our frame perfectly. A frame was used to stencil out the amount of insulation needed per frame during the cutting, which made the process much easier than it otherwise could've been. The insulation was doubled in lengths of 60cm*120cm, so that there would be 2*100mm of insulation packed into a 175mm wide frame.
The whole lot was then wrapped (easier said than done!) in a light, loose-weave fabric.
The results? AMAZING! The traps have been very cheap to make ( <£15, or $30 to build, each), and have made a serious improvement to my room. I've only finished 4 so far, and really roughly positioned them in my room, but it has made quite an impact already - certaily worth the effort and money put into making them.
Once I've figured out how to properly do the measurements (and how to graph them!) I'll borrow a Klark-Technik measurement microphone and do some before/after graphs of the frequency response at my mix position.
EDIT: looks like the pics are a bit big..any idea how to resize them in OSx?
The plan was to build some sort of broad band absorder with a Rockwool-type insulation as an absorber, in a 120cm*60cm frame. The build number was to be a total of 10 traps: 4 for me, 4 for my friend, 2 to sell to make back some of the dosh we spent on them. The design would try to illiminate as much wood as possible from the frame work - this proved challenging. We sarted with 4m80 lengths of 22mm thick and 174mm wide pine, which got cut down to 60cm and 120cm lenghts, and once the holes were drilled out, the pieces were mounted into a simple regtangular frame.
The absorbant insulation was Knauf Crown Roll acoustic paneling, bought in rolls 6.50m*1.20m, 100mm thick. Initially the stuff smelt pretty bad (the odour best described as rotting fish
) but these seems to have disappeared after leaving it outside in the fresh air for a few hours.
The insulation was easy to cut through with a Stanley (carpet) knife. Luckily, the roll seemed to be pre-cut to a width of 2*60cm, which fit our frame perfectly. A frame was used to stencil out the amount of insulation needed per frame during the cutting, which made the process much easier than it otherwise could've been. The insulation was doubled in lengths of 60cm*120cm, so that there would be 2*100mm of insulation packed into a 175mm wide frame.
The whole lot was then wrapped (easier said than done!) in a light, loose-weave fabric.
The results? AMAZING! The traps have been very cheap to make ( <£15, or $30 to build, each), and have made a serious improvement to my room. I've only finished 4 so far, and really roughly positioned them in my room, but it has made quite an impact already - certaily worth the effort and money put into making them.
Once I've figured out how to properly do the measurements (and how to graph them!) I'll borrow a Klark-Technik measurement microphone and do some before/after graphs of the frequency response at my mix position.
EDIT: looks like the pics are a bit big..any idea how to resize them in OSx?
Last edited:
(Inside joke sorry, couldn't resist).
