Filling speaker cavities with cat litter

I have tried this before, but once your cat craps in your speaker, you can never get the smell out of your listening room! Even if you don't have a cat, clay litter is too light to do any good. Lead shot is the way to go.

Depends on the purpose of filling the cavity and what the manufacturer advises. If the purpose is to add mass or keep the cabinet from flexing, maybe not. I use unscented kitty litter in metal speaker stands to damp the ringing. No need to add any weight to my stands and it works very well for that purpose.

I don't know,, that stuff gets pretty dusty.. I can see it know,,, guy buys a mint pr of speakers but something seems wrong.. He pulls the driver out and its full of clay dust not to mention what else he may find... Whats that smell?? Too funny

Since this stuff is designed to absorb moisture, I would be concerned that it would be pretty sensitive to humidity.

Is one of your tweeters not going outdoors? Or is your woofer pooping out? Maybe if you neutered or spayed your speakers first, you wouldn't have these problems.