We are a Alpine authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!
Give your factory system a serious upgrade with the Alpine S2-S40 4-inch coaxial speakers. Built for enthusiasts who want cleaner highs, stronger vocals and more detailed sound without taking up extra space, these Hi-Res Audio Certified car speakers deliver the Alpine performance you expect in a compact design.
The Alpine S2-S40 combines a rigid polypropylene, glass fiber and mica cone with H.A.M.R. surround technology for controlled cone movement and improved sound performance. With 45W RMS / 140W peak power handling, these 4-inch coaxial speakers are ready to deliver crisp highs, clear vocals and punchier overall sound from your aftermarket head unit or properly matched amplifier.
Don't settle for flat, lifeless factory audio. The Alpine S2-S40 brings cleaner, more detailed and more engaging sound to your vehicle in an easy-to-install 4-inch package. If you're looking for a high-quality 4-inch car speaker upgrade with Hi-Res Audio performance and trusted Alpine engineering, the S2-S40 is ready to transform your daily drive.
| Ultimate Alpine 4" Speaker Performance Comparison | |||
|---|---|---|---|
 Alpine S2-S40 Next-Gen S-Series 4" Coaxial Speaker – Easy OEM Upgrade with Hi-Res Audio & Clean Sound BEST VALUE
|
 Alpine S2-S40C Next-Gen S-Series 4" Component Speaker System – Improved Soundstage with Separate Tweeters BEST COMPONENT
|
 Alpine BRV-S40 BassRev™ 4" Coaxial Speaker – Enhanced Low-Frequency Performance in a Compact Design BASS FOCUSED
|
 Alpine BRV-S40C BassRev™ 4" Component Speaker System – Maximum Compact-Speaker Bass Performance with OPTIM™ Sync ULTIMATE BASSREV
|
Upgrade your factory audio system with Alpine's compact 4-inch S-Series 2-way coaxial speakers, designed to deliver clear and balanced full-range sound.
Experience more detailed music with Hi-Res Audio certification and an extended frequency response reaching up to 40kHz.
The polypropylene cone with glass fiber and mica reinforcement provides a strong, lightweight design for clear and responsive sound.
The integrated 3/4-inch cloth-dome tweeter helps reproduce smooth, detailed high frequencies for a more natural listening experience.
Alpine's High-Amplitude Multi-Roll surround allows increased cone movement to produce stronger and more controlled bass from the compact speaker.
With 45 watts RMS and 140 watts peak power handling, the S2-S40 is ready to deliver powerful sound for everyday listening.
Its compact 4-inch size makes the S2-S40 a great choice for upgrading select factory speaker locations with improved clarity, detail, and output.
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Features:
Specifications:
Upgraded my Bronco with these speakers. Surprisingly good midrange and crisp highs. Easy to install and paired well with a 50W amp. Takes the audio to a whole new level.
They sound awesome in my Bronco. The highs are way clearer than the stock speakers, and I'm pleasantly surprised by how good the mids are. The bass might be a tad lacking, but overall, it's all good.
A great fit for my Bronco. Nice upgrade from the Kicker that I had before. Amazing value for the sound quality.
Just the perfect upgrade for my Lexus. Not expensive but the sound is really above its level.
We are a Alpine authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!
Give your factory system a serious upgrade with the Alpine S2-S40 4-inch coaxial speakers. Built for enthusiasts who want cleaner highs, stronger vocals and more detailed sound without taking up extra space, these Hi-Res Audio Certified car speakers deliver the Alpine performance you expect in a compact design.
The Alpine S2-S40 combines a rigid polypropylene, glass fiber and mica cone with H.A.M.R. surround technology for controlled cone movement and improved sound performance. With 45W RMS / 140W peak power handling, these 4-inch coaxial speakers are ready to deliver crisp highs, clear vocals and punchier overall sound from your aftermarket head unit or properly matched amplifier.
Don't settle for flat, lifeless factory audio. The Alpine S2-S40 brings cleaner, more detailed and more engaging sound to your vehicle in an easy-to-install 4-inch package. If you're looking for a high-quality 4-inch car speaker upgrade with Hi-Res Audio performance and trusted Alpine engineering, the S2-S40 is ready to transform your daily drive.
| Ultimate Alpine 4" Speaker Performance Comparison | |||
|---|---|---|---|
| Alpine S2-S40 Next-Gen S-Series 4" Coaxial Speaker – Easy OEM Upgrade with Hi-Res Audio & Clean Sound BEST VALUE
|
Alpine S2-S40C Next-Gen S-Series 4" Component Speaker System – Improved Soundstage with Separate Tweeters BEST COMPONENT
|
Alpine BRV-S40 BassRev™ 4" Coaxial Speaker – Enhanced Low-Frequency Performance in a Compact Design BASS FOCUSED
|
Alpine BRV-S40C BassRev™ 4" Component Speaker System – Maximum Compact-Speaker Bass Performance with OPTIM™ Sync ULTIMATE BASSREV
|
Upgrade your factory audio system with Alpine's compact 4-inch S-Series 2-way coaxial speakers, designed to deliver clear and balanced full-range sound.
Experience more detailed music with Hi-Res Audio certification and an extended frequency response reaching up to 40kHz.
The polypropylene cone with glass fiber and mica reinforcement provides a strong, lightweight design for clear and responsive sound.
The integrated 3/4-inch cloth-dome tweeter helps reproduce smooth, detailed high frequencies for a more natural listening experience.
Alpine's High-Amplitude Multi-Roll surround allows increased cone movement to produce stronger and more controlled bass from the compact speaker.
With 45 watts RMS and 140 watts peak power handling, the S2-S40 is ready to deliver powerful sound for everyday listening.
Its compact 4-inch size makes the S2-S40 a great choice for upgrading select factory speaker locations with improved clarity, detail, and output.
← Swipe left or right to browse videos →
