– One pair – Extra flat BMW specific subwoofer with double neodymium-motor – Klippel® optimized -Suitable for BMW E6.. / E7.. / E8.. / E9.. and all F-Models (other models conditionally) – Impedance: 4 Ohm – Frequency response: 35 – 250 Hz – SPL: 89 dB – Power Watt RMS: 100 – Power Watt Max: 160.