R-25 Insulation instead of Owen Corning 703

[Joji]

I found a website for Bass traps

Geisen DIY Corner Bass Trap

Instead of owens 703he used 16" of loose R-25 fiberglass insulation. he pressed it down so it would fit into a 2x4x37" wood panel. The rating on ther R-25 say about 4.75 lbs psq ich I think

Lowes sells this for $9 a roll so I could make about 9-10 traps for $90

The Manville, owen and others cost 3 to 4 times as much. He used chicken wire to hold the R-25 in.

Is this as good as the other method. It is so much cheaper. better on the budget
thanks

[aleatoric]

Makes sense to me.

Ultra touch R-21 is really good too and cheaper than 703. A bit of a problem for panels though because its so flimsy.

[Joji]

If you check out the link I had in the post the guy used a strong mesh wire to hold the insulation in. Does the R-21 have better specs than the R-25?

[Glenn Kuras]

Does the R-21 have better specs than the R-25?

Both are going to be pretty much the same.

[Joji]

Glen,
Thanks for your help. I watched one of my videos last night and I saw that studio designer Manny LaCarrubba was onn there teaching room correction which I never noticed before. He said for the 1st relfections that you can put a triangle off the wall so the sound will reflex further away from the mix position. This video is a little loder. I assume this is still vlaid.

Would it be more effective to take a GIK242 and mount it on wood so it is angle off the wall and put R-25 behind the triangle were ther is space tot eh wall.

Also are the GIK 242 fine for 1st reflexsions or should I mount some extra sound foam on the face of them for hi and mid absorbtion or is this not necessary.

last. He said in the viedo that you should not have just fiberglass only that there needs to be a membrane to absorb heat and vibrate. I don't think the bass traps you have or realtraps have the membrane.

sorry for all the questions
thanks

[Glenn Kuras]

Would it be more effective to take a GIK242 and mount it on wood so it is angle off the wall and put R-25 behind the triangle were ther is space tot eh wall.

You could try it and see, but we have found just leaving it flat absorbs most (if not all) of what you need.

Also are the GIK 242 fine for 1st reflexsions or should I mount some extra sound foam on the face of them for hi and mid absorbtion or is this not necessary.

That is what the GIK 242 is designed for so YES.

last. He said in the viedo that you should not have just fiberglass only that there needs to be a membrane to absorb heat and vibrate. I don't think the bass traps you have or realtraps have the membrane.

You should not have any kind of membrane for the early reflection points. But yes us and realtraps have them on our bass traps.

[Joji]

I was actually trying to find out about the bass traps. you say there is a memberane. I can't see it on mine because they are covered by your fabric. What is the membrane made of. Is it foil or vinyl? I thought the membrane would reflex the bass back out

[Glenn Kuras]

More vinyl based.

If you plan on building some then just use FRK on the fronts. thumbsup

[Joji]

What does FRK stand for. I can't find it. Also can I use clear vynIl. How thick is FRK. What does it usually cost
thanks

[Joji]

I went to lowes and they said there is no FRk but FRP. It looked like apanel or siding. is this it?

[Joji]

Instead of the frames being wood before you add the fabric. I saw someone used some kind of metal or aluminum for the shell and then wrapped it with Duck Cloth or another fabric. Another guy used PVC.

Do these change the bass traps in anyway or is the frame just to hold the owen C 703 in place

[Glenn Kuras]

Originally Posted by Joji

I went to lowes and they said there is no FRk but FRP. It looked like apanel or siding. is this it?

FRK is a facing that is found on OC products.



If you can't find it then you can also use paper (like a paper bag thickness) or thin plastic.

[Glenn Kuras]

Originally Posted by Joji

Instead of the frames being wood before you add the fabric. I saw someone used some kind of metal or aluminum for the shell and then wrapped it with Duck Cloth or another fabric. Another guy used PVC.

Do these change the bass traps in anyway or is the frame just to hold the owen C 703 in place

Yes and no. It will still work but it is imported to keep the sides exposed to sound coming in. A good panel will absorb on all sides. thumbsup

[Joji]

i have to find the example of the metal frames. I am pretty sure it is on this forum. they were open on the back and all sides except the fron which was the the paper over the OC

Isee you have the 242 or monster traps on wooden stands. I have a doofr way will putting a trap in front of a door way help with the sound or does the sound just travel over it to the other room
thanks

[Joji]

here is the metal frame site I was talking about

Steven P. Helm: DIY Bass Traps

would these vibrate to different bass tones or is it to thin. it looks like the traps would be more exposed and lighter then wood.

[Joji]

any thoughts?

[PaulP]

Originally Posted by Joji

here is the metal frame site I was talking about

Steven P. Helm: DIY Bass Traps

would these vibrate to different bass tones or is it to thin. it looks like the traps would be more exposed and lighter then wood.

I see no problem using this method. Quite neat in fact. If the insulation
is a snug fit it should prevent the metal from vibrating.

Paul P

[RTR]

So are we talking about using REGULAR rolled up insulation ? Thats great if it will work...I can now treat my room (cant afford 703)