S2-S40 N. ext-Generation S-Series 4" Coaxial 2-Way Speaker Set Newly redesigned and Hi-Res Audio Certified, the Next-Generation S-Series S2-S40 4” Coaxial Speakers offer a new standard in entry-level sound performance. Hi-Res Certified Using “trickle-down” technology, inspired design, and performance cues from the Ultra-High-Resolution AlpineF#1Status system, the Next-Generation Alpine S-Series Speakers are now Hi-Res Audio Certified and able to reproduce up to 40kHz frequency response. This new benchmark in sound quality elevates the Next-Gen S-Series Speakers resulting in a more accurate and natural sound at an entry-level price point. Clean, Accurate Audio Crafted with a unique combination of Poly Propylene, Glass Fiber, and Mica Cone materials, the S2-S40 is engineered for lightweight construction, high output, and low distortion, giving you a clean and accurate audio experience. Hi-Res Audio Certified (Up to 40kHz) Poly Propylene, Glass Fiber, and Mica Cone Material Lightweight Design with High Output and Low Distortion High-Amplitude Multi-Roll (H.A.M.R.) Surround Integrated 3/4” Tweeters (Coaxial) Specification: Woofer Size: 4” Tweeter Size: 3/4” (Coaxial) Power Handling: 45W RMS / 140W Peak Frequency Response: 97Hz - 40kHz (Hi-Res) Sensitivity: 86dB *By request/order.