[PoorSignal]

My sofa is against the backwall, I am looking to hang a sheet of eggcrate foam on that wall, hopefully it will clear up any reverbs that may be bouncing off the back wall and give a boomy feeling, and make things (esp. bass) sound more clear, before I get a EQ.


do you think the foam would work? Thanks

 

[OvalNut]

No. You'll need much thicker and heavier absorption.



Tim

 

[bluesky636]



Quote:
Originally Posted by PoorSignal /forum/post/18186124


My sofa is against the backwall, I am looking to hang a sheet of eggcrate foam on that wall, hopefully it will clear up any reverbs that may be bouncing off the back wall and give a boomy feeling, and make things (esp. bass) sound more clear, before I get a EQ.


do you think the foam would work? Thanks

Totally worthless. Google "bass traps".

 

[PoorSignal]



Quote:
Originally Posted by bluesky636 /forum/post/18186204


Totally worthless. Google "bass traps".

so the egg crate/wedges don't do anything to absorb bass?


thanks

 

[Johnsteph10]

They may absorb some high frequencies (a little). The foam is closed cell -- not open cell (which is what you want). Additionally, it is not even closed to being thick enough to be useful.

 

[bluesky636]



Quote:
Originally Posted by PoorSignal /forum/post/18186379


so the egg crate/wedges don't do anything to absorb bass?


thanks

Nope. Google "bass traps" and you will learn why.

 

[goneten]



Quote:
Originally Posted by PoorSignal /forum/post/0


so the egg crate/wedges don't do anything to absorb bass?

It will absorb some bass but the absorptive coefficient for egg crates is probably 0.08 at 250 Hz. In other words, it is useless and shouldn't be considered.


Since I am a nice individual I'll explain in depth why foam isn't useful and I'll try not to be cryptic about it and ask you to search google for answers. The answer ? Foam has very poor gas flow properties.


The end.


Do you have any other questions ?


Regards,

 

[penngray]

having a sofa against the wall is a big compromise that you have deal with (I know because I deal with mine). You need 5 or 6" of OC703, you can build them into panels and hang them all the wall.


DIY, is pretty easy and for a

Here is my newest DIY panel on the floor in front of my speaker (Im using it for measurements) but it will hang on the back wall afterwards.

 

[Vidmaven]



Quote:
Originally Posted by penngray /forum/post/18189174


having a sofa against the wall is a big compromise that you have deal with (I know because I deal with mine). You need 5 or 6" of OC703, you can build them into panels and hang them all the wall.


DIY, is pretty easy and for a

Here is my newest DIY panel on the floor in front of my speaker (Im using it for measurements) but it will hang on the back wall afterwards.

Nice looking wall of sound you got there. Are those all home brew? What are the ribbon tweeter ones with the the quilted maple fronts I see?

 

[penngray]

btw, here is my back wall, with 6" of treatment, custom built into my room.

 

[penngray]



Quote:
Originally Posted by Vidmaven /forum/post/18189242


Nice looking wall of sound you got there. Are those all home brew or is that a pair of Selah monitors with the the quilted maple fronts I see?

Its all my DIY speakers. I just had them in the room for measuring. The latest ones are the waveguides and they are staying the other ones are leaving the room.



I never had them all one at once but I thought it was a cool picture to take this past weekend!

 

[MIkeDuke]

I put a pair of Gik 244's on my back wall. As well as whole bunch of other traps. My seating position is right against the back wall as well. I can't tell what they would do on their own but I am sure they are doing something good.

 

[Vidmaven]



Quote:
Originally Posted by penngray /forum/post/18189260


Its all my DIY speakers. I just had them in the room for measuring. The latest ones are the waveguides and they are staying the other ones are leaving the room.



I never had them all one at once but I thought it was a cool picture to take this past weekend!

Ha! You were too fast on the reply button ! I edited my post when I realized that those were obviously not Selah monitors, your ribbon tweeter is much bigger than theirs. Nice woodwork!

 

[penngray]



Quote:
Originally Posted by Vidmaven /forum/post/18189512


Ha! You were too fast on the reply button ! I edited my post when I realized that those were obviously not Selah monitors, your ribbon tweeter was much bigger than theirs. Nice woodwork!

THanks, Yeah the ribbons I use are the more expensive Fountek Neopro5i, Im actually going to waveguide designs so I need to find a new home for the ribbons, Im going to have 5 unused.

 

[bluesky636]



Quote:
Originally Posted by goneten /forum/post/18189159


Since I am a nice individual I'll explain in depth why foam isn't useful and I'll try not to be cryptic about it and ask you to search google for answers. The answer ? Foam has very poor gas flow properties.


The end.

My gosh! Why didn't I realize that! Thank you for clearing that up. Your response was so helpful.

 

[goneten]



Quote:
Originally Posted by bluesky636 /forum/post/0


My gosh! Why didn't I realize that! Thank you for clearing that up.

It's my pleasure. Don't mention it.


Regards,

 

[bluesky636]



Quote:
Originally Posted by goneten /forum/post/18189761


It's my pleasure. Don't mention it.


Regards,

I'm sure the OP appreciates your contribution too.

 

[goneten]



Quote:
Originally Posted by bluesky636 /forum/post/0


I'm sure the OP appreciates your contribution too.

I really hope so too. I spent a lot of time and effort putting all the information together into a single line. I think I nailed it. Obviously it pales in comparison to your in depth contributions but still.


Regards,

 

[PoorSignal]

So get the oc703 (2" thick) and then frame and cover it up?

 

[penngray]



Quote:
Originally Posted by PoorSignal /forum/post/18190863


So get the oc703 (2" thick) and then frame and cover it up?

I would say double up the 2" thick stuff so its 4" thick.