Features & specs
General | ||
---|---|---|
Speaker Size | 4 | |
Design | 2-way | |
Tweeter Design | Dome | |
Impedance (Ohms) | 4 | |
Tweeter Composition | Cloth | |
Woofer Composition | Polypropylene/Glass Fiber/Mica | |
Woofer Surround | Rubber | |
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 | |
Minimum RMS Wattage | --- | |
Maximum RMS Wattage | 45 | |
Peak Power Handling (Watts) | 140 | |
Top-mount Depth (Inches) | 1 3/4 | |
Bottom-mount Depth (Inches) | N/A | |
Cutout Diameter or Length (inches) | 3 11/16 | |
Mounting Height (Inches) | 0.28 | |
Frame Width | 4 | |
Frame Length | 4 |
Product Research
Features
Woofer installation: The woofers' mounting tabs can be removed, allowing installation in 4-hole or 2-hole 4" applications. Adapter brackets are included to allow mounting them in factory 4x6 locations. Please enter your vehicle information to confirm fit.
Tweeter Mounting Options: The tweeters can be flush mounted using the supplied flush mount brackets and rings. Once mounted, the tweeters can swivel approximately 20° for optimum imaging. The tweeters can also be mounted in factory tweeter locations behind factory tweeter grilles using the supplied stealth mounting brackets. The stealth brackets have a multitude of tabs used for different mounting configurations. When not needed, the tabs are easily removed. The factory location measurements in the chart below are generally minimums, with some tabs removed. (The three mounting tabs in the tweeter housings are not symmetrical, so there is only one correct position to insert the tweeters.)
Flush Mount | Factory Location (bottom mount) | Factory Location (top mount) | Factory Location (under factory grille) | |
---|---|---|---|---|
Depth | 0.75" | 0.721" | 0.64" | 0" |
Height | 0.35" | 0" | 0.08" | 0.72" |
Cutout Diameter | 2.0" | 1.25" | 1.715" | N/A |
Frame Diameter | 2.28" | 1.715" | 1.715" | 1.715" |
Crossovers: The Alpine S2-S40C features high-pass crossovers in-line with the tweeters' speaker wires. The terminals on each tweeter wire easily plug into the tweeter and corresponding woofer. (They only plug in one way, so the polarity can't be reversed.)