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In Reply to: Second the traps, plus... posted by grailer on January 26, 2007 at 03:58:09:
Far froma an echo : it's more of deep rumble!The floor is a wood-look-alike laminate that rests on a foam sheet.
The walls are made of wooden (1/8 press-wood) pannels : I can't find the proper word -- sorry, I'm franco-latin. Once painted, it looks like drywall, but is not. The surface is light and rigid (!) and hollow.Floor and walls : could not be worse. Not to be changed since I rent and that I am about to move...
I would not admit it at first : I feared the traps would be part of the solution and did not feel ready for such a construction.
Well, lets do some research!
Thank you once more!
Follow Ups:
D'accord. Je comprends.Have you tried low-frequency absorbing stuff, like a thick rug with pad underneath?
Maybe hang some thicker curtains too...?
Does this rumble happen regardless of the source you're using (e.g., radio, CD player, etc.)?
Yes, it happens whatever the source is.Of course, the beat would be to rip the wall and floor material off and replace them with the right stuff : it will not happen!
I do have a rug I could try.
I also have a thick high density foam pad (used in the construction of climbing crash pads). I will cut two pieces and just put them behind the speakers. If it helps -- I think it will --, I will build something out of it (freestanding bass trap panels of some sort).
Would you believe I already went through crash A/B tests?I did a quick spike mod to my stands (conical snowbaord binding washers) to remove the little damping effetc of the thick tape : less resonance.
I am happy with that.
I also tryed with the pads between the speakers and the stands : not much effect.
Then I tried the foam pads behind the speaker : to my surprise, I could no difference, except maybe that things where worse. I suspect that the pads must have worsten the wall effect since they were not thick and soft enough (as regular bass trap usually are).
The walls being what they are, I figure that if I go with thin panels (because of space limitation), it would be better that they reflect to get all that bass away from the wall rather than add to the nautral resonance of that same wall.
Conclusion : for now it will spikes under the speakers; second : I should move -- quick; latter, I might go with one nice and big JR bass trap cylinder.
Yeah, you'll want to couple the speakers to the stands, not isolate them. Try using a thin layer of rope calk or Blu-tack to do that.I'm surprised the foam on the walls didn't do much either. Have you ever seen egg-crate foam? It has all sorts of hills and valleys. Try using them on the side and opposite walls from the speakers too. I've used such foam panels to good effect to tame bass resonance and treble reflections too. Looks like merde, but can work well.
The bass traps work very well. In the interim, perhaps some long, cylindrical pillows might give you a taste?
I know the egg-crete foam and what I use is pretty much the same thing but flat.Maybe it did not work because it lacked a rigid backing (1/2 in. plywood) and a sturdy frame.
For now, I spiked the speakers and it works (a little better); I will try pillows (excellent idea)or anything that may baffle to see if it is worth it to spend time on flat panels.
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