speekers

i found a speeker but unfortunately it could not go that loud to move the corn flour so i looked on what i could do i looked around and found a clip on the myth busters and they created a sub woofer they made it vibrate by attaching the bottom of the woofer to some part of the engine to make it rapidly vibrate so i looked around and found a little motor and made it unbalanced so in sted of using sound i used the motor to simulate the vibrations like they did in myth busters and it seamed to work quite well