4" S-Series Full Range Speakers

Alpine S2-S40
Alpine S2-S40 Alpine S2-S40 Alpine S2-S40 Alpine S2-S40 Alpine S2-S40


Newly redesigned and Hi-Res Audio Certified, the Next-Generation S-Series S2-S40 4” Coaxial Speakers offer a new standard in entry-level sound performance.

  • 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 (H.A.M.R.) Surround
  • Integrated 3/4" Tweeters (Coaxial)

Hi-Res Certified

Using “trickle-down” technology, inspired design, and performance cues from the Ultra-High-Resolution AlpineF#1Status system, the Next-Generation Alpine S-Series Speakers are now Hi-Res Audio Certified and able to reproduce up to 40kHz frequency response. This new benchmark in sound quality elevates the Next-Gen S-Series Speakers resulting in a more accurate and natural sound at an entry-level price point.

Clean, Accurate Audio

Crafted with a unique combination of Poly Propylene, Glass Fiber, and Mica Cone materials, the S2-S40 is designed for lightweight construction, high output, and low distortion, giving you a clean and accurate audio experience.

HAMR Surround

Alpine-exclusive High Amplitude Multi-Roll (HAMR) surround technology is integrated into the speaker design which allows for maximum cone movement, delivering powerful and accurate bass notes.


Woofer Size
Tweeter Size
0.75" (Coaxial)
Power Handling
140W Peak
Frequency Response
97Hz - 40kHz (Hi-Res)
86 dB
More Information
Brand Alpine
RMS Power 45W RMS
Speaker Design 2-Way
Speaker Size 4"