Very good points and ones that I had not thought of at all.
I saw an add here a few days ago for very small stainless steel discs. I suppose the steel wouldn't create dust like lead. At the very least, it wouldn't be as toxic.
If I remember correctly steel weighs approximately 4oz per cubic inch. Discs would be less, since there is some air space, say 20% less. Hmmm, 100 cubic inches for 20Lbs as a guesstimate. That's a fair amount of volume, 4 to 5 percent of my speakers internal volume, certainly enough to have some acoustic effect.
Nonetheless my curiosity is still piqued.
I saw an add here a few days ago for very small stainless steel discs. I suppose the steel wouldn't create dust like lead. At the very least, it wouldn't be as toxic.
If I remember correctly steel weighs approximately 4oz per cubic inch. Discs would be less, since there is some air space, say 20% less. Hmmm, 100 cubic inches for 20Lbs as a guesstimate. That's a fair amount of volume, 4 to 5 percent of my speakers internal volume, certainly enough to have some acoustic effect.
Nonetheless my curiosity is still piqued.