Product Details: 3-1/2" X Series Mid-range Car Speakers. Power Handling: . Peak: 200 watts per pair / 100 watts each. RMS: 100 watts per pair / 50 watts each. Xmax: 4mm (One-way). Carbon Fiber cone material. Rubber speaker surround. 1" High-Temperature voice coil. Neodymium magnet motor structure. Top-mount Depth: 1. 62". Cutout Dimensions: 2. 85". Impedance: 4 ohm. Frequency Response: 200 - 18000 Hz. Sensitivity: 85 dB. CEA-2031 compliant. Speaker Grilles Included. Authorized Internet Dealer. MFR #: XQS3v2. 1-year Manufacturer's Warranty. Priced Per Pair. T/S Parameters: Voice Coil Resistance (Re): 3. 2 Ω. Free Air Resonance (Fs): 150 Hz. Equivalent Compliance (Vas): 0. 59 L. Electrical “Q” (Qes): 0. 958. Mechanical “Q” (Qms): 4. 942. Total Speaker “Q” (Qts): 0. 803. Moving Mass (Mms): 2. 549 g. Mechanical Compliance (Cms): 0. 457 mm/N. Magnetic Strength (BL): 2. 765 T·m. Effective Piston Area (Sd): 4. 80 sq. in (0. 0031 sq. m).