Alpine S2-S40C


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Newly redesigned and Hi-Res Audio Certified, the Next-Generation S-Series S2-S40C 10cm (4”) Component Speakers offer a new standard in entry-level sound performance.

We packed supreme capability into these speakers by using highly effective materials and proprietary design elements. The lightweight woofer cone, crafted from a combination of polypropylene, glass fibre, and mica materials, serves up the essential high output / low distortion sound required for High-Res Audio performance. Alpine S-Series speakers feature increased magnet sizes for more power handling and best mid-bass performance in their category.

The woofer’s High Amplitude Multi-Roll (HAMR) surround brings out the best in bass by allowing maximum cone movement. A 2cm (3/4″) dome tweeter serves up all the high-frequency detail you’ve been missing with your factory speakers.

All speakers in the S-Series line have a wide vehicle fitment range and include several adapters and spacers. Using in-line crossovers, these speakers can be installed quick and easy even at home.



  • Woofer Size: 10cm (4”)
  • 2cm (¾“) Component Tweeters with Swivel Housing
  • Hi-Res Audio Certified (up to 40kHz)
  • Poly Propylene, Glass Fiber, and Mica Cone Material
  • Lightweight Design with High Output and Low Distortion
  • High-Amplitude Multi-Roll (HAMR) Surround


Power Handling

  • Peak Power: 140 Watts
  • RMS Power: 45 Watts

Dimensions Woofer

  • Cutout Diameter (flush-mount): 93.6 mm
  • Mounting Depth: 43.0 mm
  • Mounting Height: 6.6 mm
  • Magnet: 75.0 mm

Dimensions Tweeter

  • Cutout Diameter (flush-mount): 51 mm
  • Mounting Depth: 17.6 mm
  • Mounting Height: 7.6 mm


  • Frequency Range: 100 Hz – 40 kHz (Hi-Res Audio Certified)
  • Impedance: 4 Ohms
  • Sensitivity: 85 dB/W