Alpine S2-S40C Next-Generation S-Series 4" component speaker system

Product info: 2-way component speaker system 4" polypropylene/glass fiber/mica woofer cone with High-Amplitude Multi-Roll surround 1" cloth dome tweeter with threaded removable housing in-line crossovers for easier installation handles up to 45 watts RMS (140 watts peak power) sensitivity: 85 dB frequency range: 100-40,000 Hz mounting depth: 1.72" cutout diameter: 3.68" Hi-Res Audio Certified Alpine S2-S40C owner's manual 2 Woofers Two 4x6 Adapter brackets 2 Tweeters (each has a 29" length of wire attached) 2 Flush mount housings (with tweeters installed) 2 Tweeter grilles (fixed) Two 37" Tweeter wires with in-line crossovers (each has quick slides on both ends) 2 Flush mount retention rings 2 Stealth brackets 2 Flat mounting flanges (used in some factory applications) 2 Foam self-adhesive pads 2 Foam self-adhesive rings Ten 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 Templates 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 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) 85 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) 0.28 Frame Width 4 Frame Length 4