Holds up to 80 pounds, but only weighs 6.
The best way for mobile audio to be heard is up in the air above the crowd on tripod stands. The American Audio SPS-1B is a great solution because it's a light weight (only 6 pounds) aluminum tripod stand with a pole mount to put your speakers on.
The SPS1B is easy to set-up and takedown and can hold up to an 80 pound speaker. The included safety pin allows for maximum security.