Alpine S-Series 4 Coaxial 2-Way Speaker Set - S-S40 - ALPS-S40
Incredible sound quality;Perfect for an OEM upgrade with many sizes to choose from;Now available in a 6x9-inch component set, perfect for newer trucks and SUVs;Larger voice coil and new CFRP (Carbon Fiber Reinforced Plastic) cone;Now with Alpines patented HAMR (High Amplitude Multi-Roll) Surround, allowing for large amounts of linear air movement;1-inch silk dome tweeter (3/4-inch silk dome tweeter on the S-S40 speaker);Grilles available for 6x9-inch, 6.5-inch, and 5.25-inch models (grilles sold separately);S-Series speakers deliver the winning combination of incredible sound and value within an entry-level category; California Residents: WARNING The new S-Series Speakers have been newly designed with upgrades to voice coil size and cone material to provide great sound quality. The S-Series speakers are the new benchmark for entry OEM upgrades. The S-Series speakers have a large voice coil. The 6.5-inch and 6x9-inch models have a 35-mm voice coil, and this large voice coil size increases their driving power and control of the motor. The S-Series speakers are the first in the industry to use a material called CFRP (Carbon Fiber Reinforced Plastic), a very lightweight yet rigid material. On a standard, off-the-shelf oval cone, the edges are naturally weaker than the center due to the elongated shape. Since the CFRP material is directional, it can be manipulated during the molding process to strengthen the areas of the cone that are normally weak. The result is rigidity throughout the cone that delivers accurate and efficient performance. The ability to manipulate the CFRP material during the molding process is currently exclusive to Alpine and the S-Series speakers. Alpine has three patent-pending procedures in support of this innovative manufacturing process.