Speakers slipping on speaker stands

A little unsightly, but here in shaky California a must:

I use black bungie straps from the top of the speakers to under the stand's platform to hold down my speakers to their stands.

I second weather stripping..cheap and available at your nearest "true value", use that for now to get them stable and tweak later

Out of all these suggestions, I agree with the Blu-tack. This works amazingly well. It is often difficult for me to get the speaker off if it has been sitting on it for a while. Try Fun tack or similiar putty product. Any office supply or drugstore carries it for less than 2 bucks.

My favorite tweak for securing monitors to stands is artist's kneaded eraser. They come in small gray butter pad size squares and can be shaped or compressed into any shape. Kinda like Silly Puddy.

They do a great job of locking your monitors to the metal stands. I've accidentally bumped my speakers sitting on stands with 20 pounds of steel shot in them and had the entire structure lurch without the speakers coming unstuck.

Kneaded erasers have a fine light powder in it which prevents it from permanently adhering to the wood veneer on your speakers. I've had monitors on stands for three years that came off without leaving a trace. It never gets sticky or gooey, and never discolors the wood. Remarkable stuff.

http://www.reuels.com/reuels/product4990.html