Visaton Dx 10-4, Hi-Fi Coaxial Speaker (pair), Size: 4"" + tweeter, Impedance 4 ohms, Coaxial, Sensitivity: 88 dB / w / m, Rated power: 50 W RMS, Frequency range: 80 - 20000 Hz, Cutout: 91 mm, Weight: 0.64 kg, Includes mounting material and grilles, Delivery: 2 pieces