Abstract: A method for using a device that has a user interface to control the speed of a rotating sound speaker, which has rotating rotors, between predetermined speeds, is disclosed herein. The method includes the steps of providing a user input through the user interface, adjusting some parameters associated with the device in response to the user input, generating a power output, processing the output through a control circuit and continuously varying the speeds of the rotors accordingly. A rotating speaker system is also disclosed herein. The system includes a rotating speaker and a device that controls the speed of the rotating rotors of the speaker between predetermined speeds.