Acoustic treatment


I want to build my own bass traps and was wondering if there are any other alternatives to fiberglass and rokwool. Foam is not a consideration as I don't believe it has the necessary qualities for absorption. I have heard of cotton batting, does anyone have experience with this material. The idea of fiberglass makes me itch just thinking about it, but I'm resigned to using it or rokwool if that's all I have.  Please make suggestions and let me know your experiences.

Thanks
Mike
zardozmike
Anything the right size with any damping material can be a bass trap. A walk-in closet is a bass trap. Robert Harley's The Complete Guide to High End Audio has a whole section on the design of bass traps, a lot of which is probably also available on-line for free. Just as available on-line for free you can read about distributed bass arrays and why they work so much better and make bass traps so much less important.
I’m a big fan of tiny little bowl acoustic resonators as opposed to big ugly Tube Traps or mattress size panels. They’re much easier to set up, too. As it turns out corners aren’t even the right place for Tube Traps half the time.
+1 millercarbon

     Bass tube traps, imho, are big, expensive, ugly as sin and are completely unnecessary if you invest in this instead:

https://www.theabsolutesound.com/articles/audiokinesis-swarm-subwoofer-system/

     This distributed bass array system will provide sota bass response in any room and seamlessly integrate with any pair of main speakers.  It'll also look a helluva better in your room than bass traps.
     I've been using this with large Magnepan panels for the last 4 yrs and can verify the review is very accurate.

Tim