XS-69 - Image Dynamics 6" x 9" 2-Way Component Speaker System Composite multi layer ceramic fiber and Rohacell cones structure Voice coil (Single or dual): Single | Voice coil impedance (ohms): 4 | Voice coil Diameter (inches/mm): 1.4/35.56 | Recommended Power Range (watts): 15 to 125 Mounting Diameter Tweeter(inches/mm): 1.97/50.04 | Mounting Depth Tweeter(inches/mm): 0.8/20.32 | Mounting Diameter Midbass(inches/mm): Standard | Mounting Depth Midbass(inches/mm): 3.61/91.69 Frequency response (hz): 60 to 22000