Weight 3.4 lb (1.5kg) / Shipping Weight; High-frequency Driver Components 1" Aluminum-Dome Tweeter with Waveguide; Low-frequency Driver Components 6-1/2" Aluminum Cone, CastPolymer Frame Woofer; Mounting Mounting Depth; Recommended Amplifier Power 10 - 100 Watts RMS; Sensitivity 88dB