Quote:
|
Originally Posted by Ethan Winer Michael,
> Most of the people I see making panel absorbers for corner traps look like they are sealing the sides, top and bottom of the traps so no air can leak around them. <
That's a completely different type of bass trap. Here's my take on that design, from my 1995 article in Electronic Musician magazine: www.ethanwiner.com/basstrap.html
The advantage of a sealed membrane trap is it can work to a pretty low frequency without sticking out much from the wall. Another potential advantage is it's a bass trap only, so you can put as many as you want in a room without also adding more mid/high frequency absorption. The downside is it's a tuned design, so you need two or even three different depths to target the entire bass range.
> This is a pressure type of panel I would assume that is causing the sound waves to have to fight to work through the 703 <
This type of trap does work on pressure, but it acts more like a "shock absorber" for sound waves. In this case the rigid fiberglass inside serves to damp the panel's vibration so it doesn't continue to ring when the source sound stops. The rigid fiberglass also lowers the Q so the trap can absorb over a wider range of low frequencies.
--Ethan |
Hey Ethan thanks again!!! You rock.
Broadband for me thanks....
So the best solution is a non-sealed stack of 703 (or something what is best??) with a sonically transparent covering and the next best solution is a sheet of 703 (or something what is best??) attached to the wall and dressed up with a sonically transparent covering. Do I have this right?
I have 5 of your traps and they helped a whole lot but I stil have issues with 60 and 120 in my room (higher too but not as bad).