AtlasIED Model C12BT60 is a professional quality coaxial speaker for use where full range music and voice reproduction are desired. Model C12BT60 combines a 12" diameter low frequency reproducer and a 1" diameter high frequency, post-mounted reproducer. The unit features a curvelinear, treated paper cone for lower harmonic distortion and a built-in crossover network for determining proper frequency selection between the two reproducers.The competitively priced unit assures smooth frequency response in a high power handling mode. For best results, enclosures with a volume of 2 cu. ft. or greater (including AtlasIED Models Q4412 or Q4612) are recommended. A factory installed 60 watt line transformer is included with the package, however, the transformer can be easily bypassed for 8 ohm applications.