Ctx65cs - Image Dynamics 6.5" Component Speaker System Poly-mica cone with butyl rubber surround | 1" (25mm) silk dome tweeter with neodymium magnet and swivel eyeball mount | Crossover made with audiophile components utilizing air-core inductors and poly film capacitors Power: 25-200 watts |Impedance: 4 Ohms | RMS Power Handling: 100 Watts | Peak Power Handling: 200 Watts | Impedance: 4 Ohms | Sensitivity: 89dB Frequency Response: +/- 3 db 58hz-22khz | Efficiency @ 2.83 volts: 93dB Mounting Depth: 2.75"