Audio speaker answers cleanroom call
The Model CL-1 audio speaker can be used in cleanrooms and harsh environments. According to the manufacturer, it is driven by a magnetic shape change material developed by the U.S. Navy for high-power sonar transducers, with a frequency response of 70 Hz to 10 kHz. The speaker has a flat plastic face and can be wall- or ceiling-mounted in a standard electrical box. It can also be painted or covered with wallpaper.
Etrema Products Inc., Ames, IA