4" GT7 Series 2-Way Car Speakers</br>Power Handling: Peak: 180 watts per pair / RMS: 60 watts per pair</br>Polypropylene Plus One cone</br>Foam surround</br>PEI balanced dome tweeter</br></br>Product Description</br></br>4" 2-Way GT7-Series Coaxial Car Audio Speakers. 4 ohms impedance. Frequency Response: 75-20??000 Hz. Top-mount Depth: 2" Sensitivity: 90dB. Grills included.</br><br/>http://www.amazon.com/gp/product/B00NLKAFOWW