These are a 3 way stage style speaker that has a horn loaded tweeter. They have high and mid frequency attenuators for dialing in the perfect sound. These can be used for everthing from home theater to live jams 12" Polymer Treated cone woofer 1 1/2" Aluminum Voice coil 5" Treated cone midrange Ferro Fluid damped 7" wide dispersion, high Frequency horn 3rd order Butterworth turned Enclosure Impedence 8 Ohms. Frequency response -26Hz to 35Hz Efficiency 94 db (1watt, 1 meter) 240 watt peak power handling high & mid frequency controls circuit protection Lightly used have to let them go for space.