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Post by The Mad Norseman on May 18, 2013 14:07:35 GMT -5
Hi all! I'm in the process of building a pair of DIY bass traps sized to fit my two front corners (and to pass the 'WAF' which I suspect will be even more important...). In any case, these will triangular shaped in plan view, with a rounded front (facing away from the corner). Dimensions: 12" x 12" x 18" along the curved front portion x 36" high. I found the PERFECT top and bottom panels at a home improvement store in that plan shape - which were actually made for corner shelves (which would be horrid if actually used for corner shelves!). And then also a 1.5" x 1.5" x 26 center post to connect the two panels (top & bottom). In between, and also to provide the same rigid, but 'transparent' shape along its whole height is a 1/2" square metal mesh which will be carefully bent to shape/conform, then covered with an acoustically transparent black fabric. But what do my pals here on the Emo forum recommend I fill these with for the best results??? Maybe some old blankets?  (Just kidding...). |
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Post by rtg97229 on May 18, 2013 14:25:10 GMT -5
I planed on using roxul in mine but would be interested to see what other people recomend.
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DYohn
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Post by DYohn on May 18, 2013 14:37:54 GMT -5
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Post by The Mad Norseman on May 18, 2013 22:24:13 GMT -5
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Post by jlafrenz on May 18, 2013 22:36:56 GMT -5
Roxul 60 or Owens Corning 705.
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flyhigh
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Post by flyhigh on May 19, 2013 2:42:10 GMT -5
Hi Norseman...the project sounds nice. We want PICS!! Definitely go for the WAF!! Smooth sailing after that! Good Luck with the Project!! Fly |
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Post by mshump on May 19, 2013 8:07:49 GMT -5
Yes, pics please !!
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Post by Boomzilla on May 19, 2013 8:56:54 GMT -5
Also, please, where do bass traps actually GO in a room? I read that yours are going in the corners. Is this always the desired location? What if you don't have corners available? Can the traps go along a wall? How does one determine placement?
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Post by The Mad Norseman on May 19, 2013 11:18:14 GMT -5
Thanks jlafrenz - Owens Corning 705 looks too rigid (gotta conform along a curved front), also you recommend the Roxul 60 over the Roxul AFB? The AFB is advertised as flexible,...
flyhigh & mshump - Yeah I'll post some pics, hopefully later today. The stands are pretty much put together now and looking good so far!
As to the 'WAF', Mrs. Mad Norseman has already declared "Those things aren't going in MY living room!". (Our living room has been slowly turned into a Home Theater ;D), but she seemed to soften (a bit) when I said they'd each be able to double as a plant stand (and she's got TONS of plants all over the place that I put up with, so...).
So I've got to make them look good to 'pass muster' with the boss...
And Boomzilla - yeah they're going in the corners in my set up for two reasons, 1) That's where I think low frequencies congregate and cause trouble, 'booming around' and such!, and 2) That's where I have room for them.
I suppose some other rooms might have situations where the low frequencies gather in different spaces, corners, along walls next to built-ins, or other large pieces of furniture up against a wall?
In my case, its in the corner AND near/against another piece of tall furniture.
BTW - No ones answered my other question yet though - should a bass trap leave any 'cavities' inside? Or should the whole insides be stuffed full?
Thanks everyone for your interest and help!
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DYohn
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Post by DYohn on May 19, 2013 11:30:21 GMT -5
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flyhigh
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Post by flyhigh on May 19, 2013 11:30:43 GMT -5
Yeah! What HE said! GIK Acoustics has some dandy videos on their site that can offer some good info on all this trapping business... Check 'em out: www.gikacoustics.comPS: Cavities? 4 out of 5 Dentists recommend CREST As for bass traps that have cavities....my GIKs have an Air Gap (about 2"or so) in the space between the backside of the damping material and the wall. |
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DYohn
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Post by DYohn on May 19, 2013 11:32:33 GMT -5
Oh, and yes, corner placement is the best place to start. And don't forget the corners where the ceiling meets the walls...  |
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Post by yves on May 19, 2013 13:58:31 GMT -5
The problem with Roxul RockBoard and Owens Corning 703 is that they are rigid boards that can't be curved easily without breaking them, so you'd have to cut layers out of them using an electric knife (similar to the ones normally used to cut a turkey) and then stack those layers vertically on top of eachother to get the desired shape. These rigid insulation materials are more expensive than fluffy Owens Corning EcoTouch PINK FIBERGLAS. Another potential problem with rigid (i.e., high density) versus fluffy (i.e., low density) materials is the fact bass waves do not penetrate through high density porous materials as much as they do through a lower density variant. Therefore, IIRC, very thick corner bass traps (inspired on the famous Supertips SuperChunks design) generally work better if choosing the lower density fluffy type of insulation, whereas thinner corner bass traps generally work better with higher density rigid types.
As for your question re leaving an air gap between the insulation and the walls, this is done to keep the total cost down to a minumum because filling up the gap with additional insulation adds less bass trapping than using this same additional insulation to cover additional corners of the room does (i.e., corner bass traps *without* an air gap placed in the four corners of the room are less effective than corner bass traps *with* an air gap placed in the four corners of the room PLUS the four corners between the walls and ceiling, for example).
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flyhigh
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Post by flyhigh on May 19, 2013 16:26:09 GMT -5
LOVE the corner traps.
Norseman? Do this right Buddy. Nice, Clean fit in the corners...pleasing color coordination.....You could smuggle 100 of those into the room without trashing the Decor, and The Wife wouldn't say a word.
Well...at least not until She talks to her Attorney....
Great Idea though! I wish I had a shop-space to work with,and I'd be copying your project!
I think you're going to find this DIY project to be time VERY well spent.
All the Best!
Fly
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Post by The Mad Norseman on May 19, 2013 16:40:56 GMT -5
Oh, and yes, corner placement is the best place to start. And don't forget the corners where the ceiling meets the walls... Thanks for that, and the other link. The 'WAF' prevents me from going over what will turn out to be 37.25" high each, and both will be in corners. But that's not so much of an issue as the ceiling is high and sloped there above each corner, and the wall above is also open above to a dining room level a 1/2 story up. Above 45" or so there's no "corner" to speak of on the left side. I've gotta make these "acceptable looking", and think I'm on the way here (see photo attached!). I'll be painting them a satin black after filling the screw holes., and covering with a black acoustically transparent "sock" like thing a daughter will be sewing for me (the fabric will be a bit 'stretchy' in the horizontal direction for better conformity...but not too much, as I don't want the mesh behind showing through too obviously). I think I'll get the 2" Roxul AFB 'fire batts', and line the exterior and leave a cavity up the middle. I'll also leave the bottom plate's screws accessible so I can add 'stuffing' later to experiment further if I need to... (Any advantage/disadvantage to setting these slightily out from the corner? If so by how much?, or if not, should they be pretty much right up against the baseboard?). ...saw some 2" heavy/thick 'denim' batts (of all things!) at Menards this afternoon, and briefly considered using that to stuff these with, but not knowing what its frequency attributes are, I passed... Attachments:
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Post by Boomzilla on May 19, 2013 17:22:17 GMT -5
Seriously SPIFFY looking job, Norseman! Show us again when finished, please (and with the plant in place - that way I can show the photo to my better half & say "I'd like some of THESE!!").
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flyhigh
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Post by flyhigh on May 19, 2013 18:20:43 GMT -5
Really Nice. This has serious potential. |
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flyhigh
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Post by flyhigh on May 19, 2013 20:14:49 GMT -5
I'm seeing "WAF" off the charts...
You gotta run with this Norseman!
"NorseAudio Decor Friendly Plant Risers"
Where Plants & Resonance Go to Die.
The Girls would be all over these....and stuffed with SAFB.....we Audio hacks get our way too.
A total Win-Win "Sitchyashun"!
PM Me with Shipping costs to NC. Those are gonna be nice!
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Post by The Mad Norseman on May 19, 2013 21:34:46 GMT -5
Thanks for the encouragement everyone!  But as I mentioned, gotta make these bad boys 'sing', or they ain't gonna pass muster with the boss. A decent start so far I think, and next up is getting the wire mesh on them and I'll take another photo - gotta leave one side open for 'stuffing' them though! Then I'll probably have to stand down for awhile until the insulation arrives, then stuff 'em, take another photo, then its get the acoustic fabric covering on 'em, and when finally all done - that's when the pleading begins... |
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flyhigh
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Post by flyhigh on May 19, 2013 21:39:44 GMT -5
Good Work Brother.....
These are going to be REAL fine!
Fly
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