Alpine S2-S40 4" 2-Way Hi-Res Full Range Speakers
Alpine S2-S40 4" S-Series 2-Way Hi-Res Full Range Speakers
Compact Power. High-Resolution Sound.
The Alpine S2-S40 4" 2-Way Hi-Res Full Range Speakers are designed to deliver clear, detailed audio in a compact form factor. Built for factory replacement or custom upgrades, these speakers combine Alpine’s advanced materials and Hi-Res Audio tuning to produce crisp highs, smooth mids, and impressive clarity from a small footprint.
Key Features
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4" 2-Way Coaxial Design – Full-range speaker with integrated tweeter for balanced sound
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Hi-Res Audio Certified – Extended frequency response up to 40kHz for enhanced detail and realism
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85W RMS / 260W Peak Power Handling – Clean, efficient performance across a wide range of systems
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1" Silk Dome Tweeter – Delivers smooth, natural high-frequency response
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Injection Molded Polypropylene Cone – Provides accurate midrange and reduced distortion
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High-Amplitude Multi-Roll (H.A.M.R.) Surround – Enhances cone movement for improved bass response
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4-Ohm Impedance – Compatible with most factory and aftermarket head units
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Shallow Mount Design – Ideal for tight OEM locations and custom installs
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Integrated Crossover Network – Ensures smooth transition between woofer and tweeter
Clear, Balanced Audio Performance
The S2-S40 is tuned for clarity and balance, making it ideal for improving factory sound systems. Vocals, instruments, and ambient details are reproduced with greater separation and definition, creating a more engaging listening experience.
Hi-Resolution Audio Detail
With Hi-Res Audio certification and extended frequency response up to 40kHz, the S2-S40 captures subtle audio details that standard factory speakers often miss. This results in a more natural and spacious soundstage.
Smooth Highs and Strong Midrange
The silk dome tweeter delivers refined high-frequency performance without harshness, while the polypropylene woofer ensures accurate midrange response. Together, they create a balanced and enjoyable sound signature.
Easy Installation and System Compatibility
Designed for straightforward replacement of factory 4" speakers, the S2-S40 fits a wide range of vehicles. Its efficient design allows strong performance even when powered by factory head units.
Specifications
| Specification |
Value |
| Speaker Size |
4" |
| Configuration |
2-Way Coaxial |
| Power Handling |
85W RMS / 260W Peak |
| Frequency Response |
90Hz – 40kHz |
| Sensitivity |
84dB |
| Impedance |
4 Ohms |
| Tweeter Type |
1" Silk Dome |
| Cone Material |
Polypropylene |
| Mounting Depth |
1.6" |
Ideal Applications
- Factory 4" speaker replacements
- Dash or rear fill upgrades
- Compact OEM integration systems
- Hi-Res audio system builds
- Entry-level to mid-level audio upgrades
What's Included
- Two 4" S2-S40 speakers
- Mounting hardware
- Installation guide
The Alpine S2-S40 delivers refined, high-resolution sound in a compact package, making it an ideal upgrade for clearer, more detailed everyday listening.
