see this

and this

Kurt Foster, post: 447821, member: 7836 wrote: see this

and this

AMazing! Thank you! exactly what I was looking for :)

1 question though! Why would the panel have a flat piece of plywood on the back? wouldn't that reduce the effectiveness of the absorption?

sp4rxx, post: 447829, member: 50410 wrote: 1 question though! Why would the panel have a flat piece of plywood on the back? wouldn't that reduce the effectiveness of the absorption?

to hold the rigid fiberglass in place.

Kurt Foster, post: 447831, member: 7836 wrote: to hold the rigid fiberglass in place.

I see, but wouldn't the fabric be used to do that? The plywood seems like it defeats the purpose, unless this is a sealed enclosure and the purpose is to trap it or something.

The plywood is a construction piece to hold the frame together and alow the user a way to install the panel via french cleat or direct to the wall or better to use a minimum 3:1 ratio standoff to not only support the panel but to increase the frequency range the panel works at.

The mlv (mass loaded vinyl) is theoretically responsible for low frequency attenuation....if it works is a guess at this point.

Brien Holcombe, post: 447868, member: 48996 wrote: The plywood is a construction piece to hold the frame together and alow the user a way to install the panel via french cleat or direct to the wall or better to use a minimum 3:1 ratio standoff to not only support the panel but to increase the frequency range the panel works at.

The mlv (mass loaded vinyl) is theoretically responsible for low frequency attenuation....if it works is a guess at this point.

So technically I don't have to add the plywood because it doesn't make much of a difference if I use fabric to hold it together?

Technically

Hey! I know I'm bumping a very old thread here, but I hope it's still possible to get some feedback here.

I've got some questions:
Is this drawing of an actual GIK Monster Bass Trap construction?

Does anyone know the dimensions used for the rigid insulation?

The cloth face is drawn so thick - but is it just regular acoustic transparent fabric? Or are we talking filt, jeans insulation or something like that?

Anyone ever dissected one of these to see what's inside? I can't get them where I live.