Pics: ceiling corner bass trap mount without making ceiling holes..

[Nordenstam]

Having two weeks summer leave off the regularly scheduled program. A golden opportunity to get some real work done! Spent the last few days installing another carload of dense mineral wool. Mostly filling in the corners and rear wall. Many corners are now superchunks. Rear wall and ceiling cloud is nearly superchunked - friggin massive! 660 pounds of absorption in total.

Just can't help myself, am all giddy happy about it! Those who claim acoustics upgrades are not as fun as purchasing gear obviously haven't tried.. Good sound is sexy!


Heres the crux of this ceiling corner montage: didn't want to damage the ceiling, for several reasons. So I had to use a a way to hang the panels without attaching them to the ceiling. This one worked out fine.

L brackets take most of the weight:


The two holes in the upper middle is for attaching the metal strip:


The metal strip goes all the way around the panel. By bending it at appropriate places, nice sharp corners can be had. The strip was fastened with nuts and bolts where the ends met:


Could have enforced the mineral wool corners with som cardboard, but didn't.. Will do next time! Panels crumbled a bit when tightening up the metal strip:

Had a single panel there before and that was fastened in a much worse looking way. This is two panels and the fit looks more than good enough for my lowly standards. Most of the mastering jobs are unattended. :D

Here's the final result:


Notice the 1" gap on the upper edge. The shadow in the picture makes it look larger than it really is. Made a wee thin little strip of absorption with scrap cuts and sealed the upper gap with it. Don't know if it's needed, but I figured it can't hurt. The gap between the chunky corner and the ceiling corner traps is going to be filled a 2D diffuser built to size.


Been listening to lots of deep basses today.. It sounds amazingly good! :-)


Cheers,

Andreas Nordenstam

[Glenn Kuras]

Hard to tell from the pictures how you exactly did it but HEY GOOD JOB!!

[Nordenstam]

Here's a Paint picture, hope it makes it clearer:



Two L brackets support the trap at the wall/trap junction. A single metal strip runs all the way around the trap, secured to the wall at the rear side. If the trap have a frame or some cardboard corners where the metal strip meets the trap, it can be taughtned very hard. If the metal strip is totally taught, the trap will hang flush with the ceiling.

Alternatively, two metal strips (or strings or similar) could be used instead. If so, the L brackets could be left out. Though, given that these where hard enough to mount as is, even with the helping hands from a friend, I did appreciate the L brackets to help support the weight when mounting it!

The ironic thing is that these 4" traps (with some scrap cuts thrown in on the rear to fill it out) are the thinnest absorbing patches in the room. Yet, they where the hardest to mount! There where two main reasons to do it this way. First, no holes in the ceiling. Secondly, to avoid building frames for the traps. With frames, hanging them is obviously easier. Am too lazy to do the frames! I just wrap them in cloth and seal it with duct tape. :D

[aleatoric]

Was just about to make this thread. I have one more bass trap I have been meaning to add to my room. It's in the back upper ceiling where the back wall meets the ceiling like yours. This final bass trap has been delayed simply do to the fact that the back of my room has a popcorn ceiling. Not very many studs and not something I can just screw into. The solution I have come up with is to glue a board (with properly placed hooks) onto the ceiling using guerilla glue (super strong glue). My panels are all unframed so they are not very heavy. Essentially just fabric bags (from Acoustimac) covering 4 inches of 703. Your solution may be a little more stable though. However I am thinking the glued board should work as well, my main concern is standing on a ladder and holding it in place for 10 minutes til the glue takes grip without having it slide out of place. Any other suggestions for wall to ceiling mounting where screwing directly into the ceiling is not a good option?

[dkelley]

I know this is way old, but wanted to say thanks for this. especially the diagram. I've been trying to figure out a way to do this also but for different reasons, such as my ceiling is really weak looking and I don't trust it to take any weight. your idea should work great!

cheers
Don