[mfsoa]

... I think.

http://www.amazon.com/gp/product/B0007P4IPG/ref=oss_product

I bought two rolls and it was enough to do all 6 of my panels. Worked out to maybe $10 per panel.

Undamped, the D1s are a bit ringy when rapped, and during loud music they vibrate to the touch. I'm not sure how much this contributes to the sound, but I'd think that 6 of these vibrating would be contributing something unwanted back into the room.

After applying the damping (it forms very well to the internal contours of the panel), the panels are much more inert and have a heftier, higher quality feel to them. Sound quality-wise it's hard to say, since my system has been down for a while, but you can clearly feel that they vibrate much less w/ music and ring much less when knuckle-rapped.

In my room lighting, I can't see the damping so the outward appearance is unchanged.

Anyway, I think this topic has come up in the past so I wanted to add my experience.

Happy diffusing 

-Mike

[eclein]

Mike when you get a chance if you can, snap a picture, I'd love to see what they look like as my next project is room treatments, I messed with some today just goofin around and got wonderful results. I need to see what these things are...thanks.
 Ed L.

[Big Red Machine]

Great idea.  I used plumber's putty.

[jtwrace]

I used acousta-stuff on the inside as per Bryan's recommendation.  Worked very well.   

[Glenn Kuras]

Mike when you get a chance if you can, snap a picture, I'd love to see what they look like as my next project is room treatments, I messed with some today just goofin around and got wonderful results. I need to see what these things are...thanks.
 Ed L.

yea I would like to see some pictures also.

[bpape]

The D1's can be done either with something soft like the Acoustistuff to allow it to provide some bass control in addition to the diffusion

- OR -

You can use something like Pete did with putty of some sort to just have diffusion. 

They're left open deliberately to allow that option.

Bryan

[mfsoa]

OK, I'll take some pics.

-Mike

[mfsoa]

OK, some quick snaps:
I guess I could have applied a few more inches to this guy, but I didn't want to run out 1/2 way through my last panel. And it might be possible to double-wide the strips to get 100% coverage but I don't think this would be cost-effective.



Some views to see how the material lays in there nicely:






The latest set-up I'm using (244 in corners, 242 between speakers):



Compared to the previous way:



Behind the head (highly recommend the D1s like this if you have a close back wall - really opens up the (lack of) space:



-Mike

[eclein]

Mike-Did you make the little corner traps too, up top? Very nice stuff...I need to look into this stuff now that I'm settled-at least this week-on equipment. I need to find a local place-Allentown vicinity or NJ-that has foam I could use as corner traps for behind my TV etc..
 

[mfsoa]

No, Ed, that's all GIK stuff (follow the link in Glenn or Bryan's posts above) except for the stuff at the very top perimeter of the room.

From what the GIK guys have said, acoustical cotton or rock wool or fiberglass of the right density will have much better acoustical properties than foam, for a given depth of material.

I'm tellin' ya' the room sounds so good I could plug speakers cables into a cow-patty and it'd sound good!

But much of the reason for this is the effort I've put into bracing the suspended wood floor - this was absolutely critical to the sound I get. I should start a new thread...

-Mike

[Glenn Kuras]

 

I'm tellin' ya' the room sounds so good I could plug speakers cables into a cow-patty and it'd sound good!

 

I just spit up my coffee on that one. 

Just a fyi, on a new QRD. 

http://www.audiocircle.com/index.php?topic=82566.msg795436;topicseen#new

[stew]

Hi Mike,

Excellent photos and setup! Thanks for sharing. I also sit close against the backwall, so I am interested in what you have on your backwall? Aside from the diffusors, are those bass panels (like GIK 244), or regular absorption panels?

Which of those treatments do you feel made the most impact?

Thanks, Stew

[mfsoa]

Thanks, Stew-
Those are GIK 242 panels on the back wall. I have them offset from the wall by ~1/2", using sections of foam pipe wrap, as one panel covers the thermostat. They used to be vertical, three across the back, but then I added the diffusion which seemed to create a larger acoustic space above and behind my head.
Hard to say on what did more for the sound, especially when I have so many panels up. What I have found is that the first few panels do A LOT and then the benefit lessens, but still accumulates w/ more panels.
Many (most?) would think the room is too damped but I like it that way - a Listening Laboratory feel. Reflections ~ distortion.

-Mike