Somebody wants to give me more than three gallons of epoxy cement. Somebody else wants to give me 20,000 11mm chrome-plated steel ball bearings. I'm thinking I'd like to use these materials to make a pair of composite subwoofer enclosures. I should think that a network of steel ball bearings epoxied together (two or three layers deep), in combination with a strong outer shell of 3/4-inch plywood and some judicious internal bracing, ought to make an extremely strong, vibration-resistant enclosure. I also have a few sacks of fine lead shot leftover from my days as a shotgun shell reloader that I could use as "filler" in the gaps between the steel ball bearings. (That would also reduce the amount of epoxy required.)
Here is my question: If I wanted to create little "pyramids" of ball bearings on the inside of the enclosure in order to prevent the formation of standing waves, how large should they be in order to be effective? Or will the inherent "bumpiness" of the flat layers of ball bearings on the inside walls of the enclosures be adequate in that regard? (I'm inclined to think I could still get standing waves with just flat layers of ball bearings.)
Any other comments, suggestions, ideas, or even analyses of my mental health would be greatly appreciated.
Christopher Witmer
Tokyo
Here is my question: If I wanted to create little "pyramids" of ball bearings on the inside of the enclosure in order to prevent the formation of standing waves, how large should they be in order to be effective? Or will the inherent "bumpiness" of the flat layers of ball bearings on the inside walls of the enclosures be adequate in that regard? (I'm inclined to think I could still get standing waves with just flat layers of ball bearings.)
Any other comments, suggestions, ideas, or even analyses of my mental health would be greatly appreciated.
Christopher Witmer
Tokyo
Comment