MartinLogan Dynamo 500 10 Stereo/Home Theater Subwoofer Each Type: Subwoofer Driver Units: Low Frequency Driver: 10 (25.4) polypropylene cone; ported Power Rating: 120 watts RMS / 360 watts peak Frequency Response: 29–200 Hz ±3dB Nominal Impedance: Line level RCA: 20,000 Ohms. Compatible with 4, 6, or 8 Ohm rated amplifiers Connectors: Inputs: Left & Right/LFE RCA Power Supply: AC |