Hi, My name is Bill Amato. I do sound design for theatres in the cleveland ohio area. In July we will be doing a production in which I would like one of the effects to be the sound of whispering that travels around the audience by means of a manual control. Is there some form of joystick controller for this? I will probably set up four speakers in the front right and left of the house and the rear right and left of the house. I'd like the whispering to be able to quickly transition among the speakers in as simple of a way as possible because I will also be mixing and dealing with other playback. I was looking at the Martin Sound PanMAX but price is a huge consideration and I cannot justify spending more that $300 on such a device. Thank you so much for any suggestions.