General Features: Patented Plus One Polypropylene Woofers Edge-Driven Tweeters True 4 Ohm Architecture Harman Standard Reliability Testing Competitively Tuned Infinity at an Affordable Price Power Handling: 55W RMS, 165W peak Sensitivity (@ 2.83V): 88dB Frequency Response: 53Hz – 20kHz Voice Coil Diameter: 1in. (25mm) Impedance: 2.7ohms Multi-Element 2-Way Design