This 15W, 4 ohms Environment-Resistant Voice/Tone Compression Driver from AtlasIED features an environment-resistant design for intercom communication. Featuring an integral exponential horn to provide reliable sound distribution and optimum intelligibility for the reproduction of voice and/or electric tone signals. It has a frequency response of 600 Hz to 5.5 kHz and termination is via 6" color coded leads. It is made from die-cast zinc, with a water-sealed driver that will withstand moisture, corrosion, vibration, vermin, and vandalism.