has lead shot surpassed cold

Please do a search in the Audiogon archives regarding lead shot before proceeding with such a plan. Please!

I used 'plummet' (for shotguns) to fill my Usher BE-20. About 40 Euro for 25 kgr. But the amount needed was unbelievable.They become 'real estate'.
Regards,

I think if you use sand, it must playground sand that will not corrode your metal stands.

Sand and litter!

Yes, if you want sand buy playground sand by the bag from your local home improvement store. Beach sand may contain salt (ocean) to corrode and other live or dead organisms (yes, it may smell funny).

Another recommended option is kitty-litter. I've not used it but can say it is dense and heavy

since lead is competing for the top spot as a presious metal. Why not just buy Gold. At least when you ever sell the speakers you can put in your ad that they the speakers are the Gold standard.