Alpine S2-S68 Next-Generation S-Series 6"x8" 2-way car speakers

Product info: 6"x8" 2-way speakers polypropylene/glass fiber/mica woofer cone with specialized rubber surround 1" cloth dome tweeter handles up to 75 watts RMS (230 watts peak power) frequency response: 75-40,000 Hz impedance: 4 ohms sensitivity: 88 dB mounting depth: 2.374" grilles not included Hi-Res Audio Certified Alpine S2-S68 owner's manual Two 2-way speakers 2 Bottom mount brackets Two 6x8 Special application brackets Two 12" Lengths of speaker wire (each has quick-slides on one end and bare wire on the other) Eight 1-1/8" Screws Eight 3/8" Screws 8 Speed clips 8 Flat washers 8 Spacers 2 Adhesive backed gaskets Warranty information On-line product registration information Important Notice sheet Declaration of conformity Template and specs on box General Speaker Size 6X8 Driver Design 2-way Woofer Design Cone Woofer Material Polypropylene/Glass Fiber/Mica Woofer Surround Rubber Midrange Design --- Midrange Material --- Tweeter Design Dome Tweeter Material Cloth Super Tweeter Design --- Super Tweeter Material --- Impedance (Ohms) 4 Weather-resistant No Grilles Included No Parts Warranty 1 Year Labor Warranty 1 Year Specifications Sensitivity (1W at 1 meter) 88 Sensitivity at 2.83 volts N/A Frequency Response 75 - 40k Hz Maximum RMS Wattage 75 Peak Power Handling (Watts) 230 Top-mount Depth (Inches) 2 3/8 Bottom-mount Depth (Inches) 2 13/16 Cutout Diameter (Inches) 7.15 x 4.884 Mounting Height (Inches) 0.418 Frame Width 5.484 Frame Length 7.7