Alpine S2-S40 Next-Generation S-Series 4" 2-way car speakers

Product info: 4" 2-way speakers polypropylene/glass fiber/mica woofer cone with specialized rubber surround 3/4" cloth dome tweeter handles up to 45 watts RMS (140 watts peak power) frequency response: 100-40,000 Hz sensitivity: 86 dB mounting depth: 1.72" grilles not included Hi-Res Audio Certified Alpine S2-S40 owner's manual Two 2-way speakers Two 4x6 Adapter brackets Two 12" Lengths of speaker wire (each has quick-slides on one end and bare wire on the other) Eight 3/4" Screws Ten 5/16" Screws Ten 1/4" Screws 10 Speed clips 10 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 4 Driver Design 2-way Woofer Design Cone Woofer Material Polypropylene/Glass Fiber/Mica Woofer Surround Rubber Midrange Design --- Midrange Material --- Tweeter Design 0.8" 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) 86 Sensitivity at 2.83 volts N/A Frequency Response 100 - 40k Hz Maximum RMS Wattage 45 Peak Power Handling (Watts) 140 Top-mount Depth (Inches) 1 3/4 Bottom-mount Depth (Inches) N/A Cutout Diameter (Inches) 3.68 Mounting Height (Inches) 0.505 Frame Width 4 Frame Length 4