ethan's bass traps vs putting fiberglass in bag

  • Thread starter Thread starter Kasey
  • Start date Start date
K

Kasey

New member
alright... i apolagize if i've misunderstood something here, im new at this. ethans bass traps are membrane traps right? a panel is placed in front of the absoprtion material which vibrates, and then the fiberglass kills that vibration. But wouldnt this only work for a very specific frequency range? Modular acoustics makes these things that are basically just rigid fiberglass wrapped in a fabric bag. my initial thinking was buying some safe n sound, placing it on some cardboard with frames around the edges and wrapping it with burlap. the fiberglass would be exposed on the outside besides being wrapped in burlap. the back would be plywood. I'd place it in a corner with the space behind it.

um... i think im missing something. I need something that will absorb a lot of bass even below 125Hz but still absorb highs. im lost. help.
 
Kasey said:
alright... i apolagize if i've misunderstood something here, im new at this. ethans bass traps are membrane traps right? a panel is placed in front of the absoprtion material which vibrates, and then the fiberglass kills that vibration. But wouldnt this only work for a very specific frequency range? Modular acoustics makes these things that are basically just rigid fiberglass wrapped in a fabric bag. my initial thinking was buying some safe n sound, placing it on some cardboard with frames around the edges and wrapping it with burlap. the fiberglass would be exposed on the outside besides being wrapped in burlap. the back would be plywood. I'd place it in a corner with the space behind it.

um... i think im missing something. I need something that will absorb a lot of bass even below 125Hz but still absorb highs. im lost. help.
Click to expand...

If you stick it in a corner, you don't want the plywood. If you're gonna stick something in the corner anyway, consider stacking triangles of 703.
 
thanks for the quick reply - so do i want my initial idea? plywood backing with framed sides? or just bascially a bag with rigid fiberglass in it? actually i'm thinking im going to go with roxul safe n sound over 703... unless someone has reason otherwise. i think its cheaper right?
 
Kasey said:
alright... i apolagize if i've misunderstood something here, im new at this. ethans bass traps are membrane traps right? a panel is placed in front of the absoprtion material which vibrates, and then the fiberglass kills that vibration. But wouldnt this only work for a very specific frequency range? Modular acoustics makes these things that are basically just rigid fiberglass wrapped in a fabric bag. my initial thinking was buying some safe n sound, placing it on some cardboard with frames around the edges and wrapping it with burlap. the fiberglass would be exposed on the outside besides being wrapped in burlap. the back would be plywood. I'd place it in a corner with the space behind it.

um... i think im missing something. I need something that will absorb a lot of bass even below 125Hz but still absorb highs. im lost. help.
Click to expand...


I'm not sure about this, but I think you're thinking of a diaphramatic absorber, where the plywood vibrates and is damped by the absorbant material.

Realtraps advertises their traps as broadband, so they will absorb mid and high, too.
 
im sorry i should have been more specific. I'm talking about ethans bass trap plans for building your own. theyre like that.
 
Also, I don't think I've ever read about having a back that's plywood.

But then again, my knowledge is very limited.
 
apl said:
What's the question?
Click to expand...

I want a good bass trap that still absorbs mid and high frequencies (i guess thats called a broadband? i dont know). Should i make it like ethan's, the diaphramatic absorber, or like modular acoustics, which is simpy rigid fiberglass wrapped in fabric, or place rigid fiberglass on plywood and wrap that in fabric, and put it in the corner with the plywood facing the corner...
 
Kasey said:
I want a good bass trap that still absorbs mid and high frequencies (i guess thats called a broadband? i dont know). Should i make it like ethan's, the diaphramatic absorber, or like modular acoustics, which is simpy rigid fiberglass wrapped in fabric, or place rigid fiberglass on plywood and wrap that in fabric, and put it in the corner with the plywood facing the corner...
Click to expand...

How you build your panels wont affect how much it will absorb- only the material you use will. If you end up buying 703, you can get away with just putting them in a bag and hanging them because they are rigid enough to hold their own weight (that is, they wont crumble or bend under their weight). On the otherhand, if you go with Safe 'n Sound (which is by the way more effective than 703, especially at low freqs) you will need to put it in a wood frame and cover the frame in fabric. This is because safe 'n sound is only semi-rigid, and it will sag, bend, and possibly crumble under its own wieght. So, overall, Safe 'n Sound is the better absorber, but harder to work with. Its your choice.
 
Framed sides, are they important?
Cause its pretty hard to make those into a tiny plywood.

I think its a good idea, i have similar in mind, its just you never know how good some no-name fiberglass absorbs sound.
 
You must log in or register to reply here.
Back
Top