[RRW]

Hi guy, I’m new here.
Who has plans on DIY acoustic tube traps using round rigid fiberglass pipe covering (13”-16” diameter)or round cardboard tubes for concrete foundations?

[ric]

I can't really answer your question, but you may or may not be interested in this web page:
http://arqen.com/bass-traps-101/placement-guide/

[Phil A]

There's plenty of cheap DIY options out there - e.g.  https://www.buyinsulationproductstore.com/Fiberglass-Pipe-Insulation-SSL-ASJ/  or   https://www.sonotube.com/sonotubeconcreteforms/round.aspx   or  https://www.gearslutz.com/board/bass-traps-acoustic-panels-foam-etc/493262-bass-traps-concrete-tubes.html

[Letitroll98]

The cardboard concrete forms were originally used for diffusion.  You cut them into half rounds placed on the front wall.  Finishing was at your pleasure.  Phil A has posted some links on how to repurpose them as bass traps as well as some alternatives.

[BobM]

If you are going to use round fiberglass pipe covering you may get some help, but stuff them with fiberglass in that hollow middle as well. Also, turn the plastic covering outward to it will also diffuse a bit of any high frequencies back there. Though they really won't do much for bass boom in corners.

[RRW]

Thanks everybody. I will put some together this week and let you guys know how they behave..

[RRW]

Hi
My diy tube traps worked much better than they look. Will add pix. They really deepened the soundstage and made quite an improvement in overall listening pleasure.

[Rob Babcock]

I look forward to pics!

[Mike B.]

The original tube traps were two plywood circles with fencing wire separating them by several feet. The interior was stuffed with dampening material. Then the exterior was covered with grill cloth. 

[richidoo]

I think the solid tube on the inside will reduce efficiency compared to the whole inner filled with absorption material.
LF absorption efficiency is proportional to the depth. I think the commercial products use wood frame and chicken wire to position the inner layers of absorption materials as needed. You could buy one of these and dissect it to learn the recipe for DIY.

[RRW]

Here are my diy corner tube traps.
They have opened up my soundstage with depth as well.
One half is absorbative while the other sides are reflective.

[stoneblue]

Wanted to share photos of my own tube trap design. I used round concrete forms from the local hardware store. I drilled 3-1/2 inch holes around the form, covered it with black speaker fabric, stuffed it with sound absorption material and then finished it with wood end caps. These provide both diffusion and absorption. So far I am pleased with the results.

Sorry for the sideways images. I could not figure out how to rotate the images.

[Rob Babcock]

The look great!  How's the performance sonically?

[Jack the cat]

Grabbed these from a site a long time ago - sorry no text and wish I could credit the poster












picture quality is lacking as they d/l smaller and I made them a little larger for posting here. They are made of pipe insulation of which the distributor had when I made my OC 705 absorbers way back when.

HTH

[tull skull]

I think those pictures are from Chris Brady, the guy that produced the Teres turntables. He had a lot of good info on there. Hope he is still around.