The Infinity REF6432CF features a 120 Watt, IMMP cone woofer, rubber surround and dome tweeter. Infinity produces high quality products at affordable prices! - 120 Watt MAX - 40 Watt RMS - Rubber Surround - IMMP Cone Woofer - 1" Dome Tweeter - True 4 Ohm Impedance - Freq. Response: 72-25000Hz - Sensitivity: 91dB - Product Condition: Brand New - Part Number: REF6432CF Series: Reference Type: 2-way Speaker Surround Material: Rubber Tweeter: 1" Dome RMS Power: 40 Watts Sensitivity: 91 dB Frequency Response: 72-25000Hz Impedance: 4 Ohm