Speaker subwoofer PIONEER TS-W309 12” SVC

12\ 4-ohms Single Voice Coil Free Air or Enclosed Subwoofer Power Handling: Peak: 1000 watts RMS: 300 watts Impedance: Single 4 ohms Frequency response: 20 450 Hz Sensitivity: (1W/1m)95 dB Woofer size: 30 cm Woofer material: IMPP Composite Seamless Cone Voice Coil bobbin type: Aluminum, diam.2 inch (48mm) Pole Yoke Type: Extended and Vented pole yoke Recommended sealed enclosure: 24,1 49,5 litres, or free-air Cut-out Hole: 278 mm mm Mounting Depth: 143,1 mm mm SurroundUrethane: Surround