Homemade Tube Bass Traps 22" for Broadband Absorption
5 tube traps I built to tame the bass frequency of my room. Like the ASC traps, have of their surface is lined with a sheet of plastic lining, to keep mid and high frequencies from getting absorbed. Built from fiberglass pipe fittings, with oak end pieces to seal them. Works great for handling nulls, dips in frequencies, or booms in frequencies. 22" wide for extra low-frequency bass handling, 2" thickness, and stand 36" high. They can be stacked if you wish. May purchase separately for $50/tube, but I can make a better price if you wish to buy many at once. If you wish to swap out the burlap fabric for something more appealing, it's very straightforward to remove with a simple flathead screwdriver. I originally had them in velvet, but then learned the hard way that the fabric must be breathable, or it will absorb the higher frequencies.
I live in Philadelphia, Pa. Sorry, pick-up only!