The Alpine S2-S68 speakers are part of Alpine's next-generation S-Series, delivering high-resolution audio performance in a 6"x8" coaxial design. Featuring a composite woofer cone made from polypropylene, glass fiber, and mica, along with a 1" cloth dome tweeter, these speakers offer clear, dynamic sound across a wide frequency range. The High-Amplitude Multi-Roll (HAMR) surround ensures accurate bass response, making them an excellent upgrade for factory-installed speakers. Key Features Speaker Type 2-Way Coaxial Woofer Material Polypropylene/Glass Fiber/Mica Composite Tweeter Type 1" Cloth Dome Surround Technology High-Amplitude Multi-Roll (HAMR) Hi-Res Audio Certified Yes (Up to 40kHz) Impedance 4 Ohms Mounting Depth 2.375" Grilles Included No What’s in the Box 2 × Alpine S2-S68 6"x8" Coaxial Speakers 2 × Bottom Mount Brackets 2 × 6x8 Special Application Brackets 2 × 12" Speaker Wires (Quick-Slides on One End, Bare Wire on Other) 8 × 1-1/8" Screws 8 × 3/8" Screws 8 × Speed Clips 8 × Flat Washers 8 × Spacers 2 × Adhesive-Backed Gaskets 1 × Owner’s Manual 1 × Warranty Information Sheet 1 × Online Product Registration Information 1 × Important Notice Sheet 1 × Declaration of Conformity 1 × Template and Specs on Box Technical Specifications Model Number S2-S68 Speaker Size 6"x8" Design 2-Way Coaxial Power Handling (RMS) 75W Power Handling (Peak) 230W Frequency Response 73Hz – 40kHz Sensitivity 88dB Impedance 4 Ohms Mounting Depth 2.375" Cutout Dimensions 5" x 7-3/16" Grilles Included No Warranty 1 Year