Stadium 122SSI - 12" (300mm) high-Performance car Audio subwoofers, 500W RMS, 1500W Peak, Sensitivity (@ 2.83V): 92dB, Frequency Response: 25Hz 175Hz, Impedance: 2 or 4 ohms

SSI (Selectable Smart Impedance): These subwoofers include a dual impedance switch that enables you to select either load impedance option. This permits a variety of system configurations when employing one subwoofer or multiple. Aero-cooled voice coil: The voice coil enhances power and boosts reliability. The woofers motor channels are air pumped by the cone movement past the voice coil, and the voice coil exposes the coils inner and outer surfaces to the airflow. Oversized voice coil: The 2 voice coil demonstrates you dont have to be a heavyweight to deliver a punch. It manages more power than standard two-inch voice coils, yet its lighter than 4 voice coils. It achieves a balance between thermal power and low mass. Premium integrated push terminals: Power is crucial for any subwoofer. The terminals accept 8 AWG wire (8.37mm2 cross section), which transfers low-resistance, low-loss power to the woofer, even over extended wire runs