MP654 – 6.5” PRO Full-Range Co-Ax Horn Speaker 150W RMS/300 MAX Power Handling Ferrite Strontium High Temp Magnet structure Heavy Duty Die-cast Aluminum Basket 1.5” 4 Ohm – Single Layer High Temp Voice Coil with Black Coated Voice Coil former for Woofer 1.0” 8 Ohm – Single Layer High Temp Voice Coil for Tweeter Advanced Voice Coil Heat Sink Design for Better Heat Dissipation Frequency Response: 110Hz -18Khz High Sensitivity 101dB 1W/1M 12dB Crossover Mounting Depth: 3.33” / 84.6mm Mounting Diameter: 5.73” / 145.5mm