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Alpine S2-S40S S-Series 4″ Component Speakers

Alpine S2-S40S S-Series 4″ Component Speakers


SKU: S2-S40C
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Alpine’s S-Series Speakers have been modified to produce excellent sound quality, with modifications to voice coil size and cone material. Alpine brings lots of design and engineering to the table which is unheard of in this price category. The new industry standard for entry-level OEM upgrades.

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SKU: S2-S40C


sku: S2-S40C

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Key Features:

  • 2-way component speaker system
  • 4″ polypropylene/glass fiber/mica woofer cone with High-Amplitude Multi-Roll surround
  • 1″ silk dome tweeter with threaded removable housing
  • in-line crossovers for easier installation
  • handles up to 45 watts RMS (140 watts peak power)
  • sensitivity: 86 dB
  • frequency range: 97-40,000 Hz
  • warranty: 1 year


Features & specs

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
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


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Additional information




Frequency Response, High

40k-49k Hz


4 ohm

Power handling RMS

Sensitivity 1 watt 1 meter

86 db