High Frequency Transducer 1" (25mm) Aluminum dome with HighDefinition Imaging (HDI™) horn; Low Frequency Transducer 6.5"(165mm) Polycellulose cone woofer; Recommended Amplifier Power 20-100W RMS; Frequency Response 50Hz-25kHz (-6dB onaxis); Sensitivity (2.83V@1m) 87dB;Nominal Impedance 8ohm; Crossover Frequency 1900Hz; Inputs Nickel-plated spring-loaded connectors; Grille Dimensions H 13.3in (339mm) x W 8.5in (217mm); Cutout Dimensions H: 12.2in (311mm) x W: 7.2in (184mm); Mounting Depth 3.3in (88mm); Product Weight (Kg) 2.2Kg;