High resolution superior sound Super realistic amp; high quality sound, and flagship designed. Sophisticated design and appearance Al-diecast basket, big tweeter and large-sized cross over network supports bi-amp connection Type: 2 Way Component Speaker Sound pressure level: : 90 dB Frequency range: 31 Hz ~ 65,000 Hz Maximum power: 300 W Nominal power: 100 W Cone size: 6-3/4 #34; (170mm) Impedance: 4 Ω Crossover frequencies: 3,600 Hz Cone material: Dual-layer Carbon Fiber Color: Black Surround material: Corrugate Coating Conex Type: Dual arc ring Diaphragm material: Aluminum color: Silver Mounting depth: 58 mm Cutout hole: φ137 mm Dimensions (Dia x Depth ): φ156 x 64 mm