Peavey Speaker Driver Diameter: 2 inch Throat Diameter: 0.875 inch / 2.2 cm Impedance: 8 ohms Tolerance Input: 280 W (peak), 140 W (program), 70 W (continuous) Sensitivity: 111dB / 1W 1m Frequency Response: 500Hz - 20,000 Hz 0Hz Minimum Impeded. 5.2 Ohms DC Resistance: 5.1 Ohms Nominal Efficiency: 30% Recommended Crossover: 1,200 Hz at 12 dB / Octave Lowest Recommended Crossover: 500 Hz at 12 dB / Octave Diaphragm: Commercially pure titanium Voice Coil Diameter: 2.0" / 50.8 mm Voice Material: Coil Edge-wound copper-clad aluminum ribbon with a high temp composite bobbin Voice Coil Cooling: Ferrofluid Flux Density: 20,500 gauss (2T) Dimensions: 3.858" (98 mm) diameter x 3.01" (76.4 mm) depth Horn Coupling Diameter: 7/8" (22.2 mm) Horn Coupling Standard 1 3/8 " - 18"