SpeakerCraft Ruckus 6 One Rock Landscape Speaker - Each (Gray/Granite) 6 1/2" Polypropylene Cone Woofer with Sealed Voice Coil, Rubber Surround and Silicone Encased Leads 1/2" Polyamide Dome Tweeter with Silicone Encased Leads, Coaxially Mounted Tweeter(s): Silicone Encased Leads, Coaxially Mounted Frequency Response: 40Hz - 20kHz Impedance: 8 (Ohms)