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Alpine  S2-S40C On Sale

Next Gen S-Series 4" 140W Peak Power Handling 4 Ohms, 2-Way Component Speaker System with Two Cloth Dome Tweeters

Item #91712

Condition:   Brand New

Product Highlights

  • Next Gen S-Series
  • 4"
  • 140W Peak Power Handling
  • 4 Ohms
  • 2-Way Component Speaker System
  • Two Cloth Dome Tweeters

  Free 2-Years Warranty Included!
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60 DAYS Price change protection.
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Alpine S2-S40C Next-Generation S-Series 4" 45W RMS (140W Peak Power Handling) 4 Ohms Component Speaker System with Two Cloth Dome Tweeters


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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!

What's Inside?
  • • (2) Woofers
  • • (2) 4x6 Adapter brackets
  • • (2) Tweeters (each has a 29" length of wire attached)
  • • (2) Flush mount housings (with tweeters installed)
  • • (2) Tweeter grilles (fixed)
  • • (2) 37" Tweeter wires with in-line crossovers (each has quick slides on both ends)
  • • (2) Flush mount retention rings
  • • (2) Stealth brackets
  • • (2) Flat mounting flanges (used in some factory applications)
  • • (2) Foam self-adhesive pads
  • • (2) Foam self-adhesive rings
  • • (10) 3/4" Screws
  • • (10) 5/16" Screws
  • • (10) 1/4" Screws
  • • (10) Speed clips
  • • (10) Spacers
  • • (2) Adhesive backed gaskets
  • • Warranty information
  • • On-line product registration information
  • • Important Notice sheet
  • • Declaration of conformity
  • • Templates and specs on box
  • Owner's Manual

 


Why Choose Alpine S2-S40C Component System?


Alpine S2-S40C Component System Tweeters and Woofers
Give More Drivers Access to High-res Audio

The Alpine S2-S40C is a compact and high-performance 4-inch component speaker system designed to deliver exceptional audio quality in your car. This speaker system includes two 4-inch mid-bass woofers and two 1-inch silk dome tweeters.

Ultra-wide Frequency Response

Despite its small size, the S2-S40C packs a punch with a peak power handling of 140 watts and an RMS power rating of 45 watts. The 4-inch woofers feature a specialized hybrid cone, which ensures rigidity and precise control over bass frequencies, resulting in clear and impactful sound reproduction.

Alpine S2-S40C Component System Front View
Alpine S2-S40C Component System
Crafted From Polypropylene

Alpine's patented High Amplitude Multi-Roll (HAMR) surround technology enhances the woofers' excursion capability while minimizing distortion, improving mid-range performance. The 1-inch cloth-dome tweeters are adept at reproducing detailed and smooth high frequencies, enriching your music with clarity and finesse. The tweeters can be swiveled, allowing you to direct the sound towards your listening position, optimizing the soundstage and imaging.

High-frequency Detail You've Been Missing

With their low-profile grilles, the Alpine S2-S40C speakers blend seamlessly with your car's interior while protecting the drivers from potential damage. The Alpine S2-S40C component speaker system offers an impressive audio upgrade for car audio enthusiasts seeking a space-saving solution without compromising sound quality.

 


Alpine 4-Inch Speaker Comparison Chart | S2-S40 vs S2-S40C vs BRV-S40 vs BRV-S40C


Ultimate Alpine 4" Speaker Performance Comparison
Alpine S2-S40

Alpine S2-S40
Next-Gen S-Series 4" Coaxial Speaker – Easy OEM Upgrade with Hi-Res Audio & Clean Sound

BEST VALUE
  • • 4" 2-Way Coaxial Speaker
  • • 45W RMS / 140W Peak
  • • 3/4" Cloth-Dome Tweeter
  • • 100Hz–40kHz Frequency Response
  • • H.A.M.R. Surround Technology
Alpine S2-S40C

Alpine S2-S40C
Next-Gen S-Series 4" Component Speaker System – Improved Soundstage with Separate Tweeters

BEST COMPONENT
  • • 4" 2-Way Component System
  • • 45W RMS / 140W Peak
  • • 1" Cloth-Dome Tweeter
  • • 97Hz–40kHz Frequency Response
  • • In-Line Crossover Networks
Alpine BRV-S40

Alpine BRV-S40
BassRev™ 4" Coaxial Speaker – Enhanced Low-Frequency Performance in a Compact Design

BASS FOCUSED
  • • 4" 2-Way Coaxial Speaker
  • • 40W RMS / 120W Peak
  • • BassRev™ Technology
  • • 75Hz–20kHz Frequency Response
  • • HEDGE™ Surround Technology
Alpine BRV-S40C

Alpine BRV-S40C
BassRev™ 4" Component Speaker System – Maximum Compact-Speaker Bass Performance with OPTIM™ Sync

ULTIMATE BASSREV
  • • 4" 2-Way Component System
  • • 40W RMS / 120W Peak
  • • BassRev™ Technology
  • • Separate Cloth-Dome Tweeter
  • • OPTIM™ Sync / Active DSP Ready

Alpine S2-S40C Highlights


4" COMPONENT SPEAKERS

4" 2-Way Component System

Upgrade your factory audio with Alpine's 4-inch S-Series component speaker system, designed to deliver clear, balanced, and detailed sound.

HI-RES AUDIO

Hi-Res Audio Certified

Enjoy more detail and clarity across your favorite music with Hi-Res Audio certification and an extended high-frequency response.

PREMIUM CONE

Polypropylene & Glass Fiber Cone

The reinforced polypropylene cone uses glass fiber and mica for a strong, lightweight design that helps deliver accurate and responsive sound.

SILK DOME TWEETER

1" Cloth Dome Tweeters

The included 1-inch cloth dome tweeters produce smooth and detailed high frequencies for a more open and natural sound stage.

H.A.M.R. SURROUND

Enhanced Bass Response

Alpine's High-Amplitude Multi-Roll surround allows greater cone movement for stronger, deeper, and more controlled bass performance.

POWER HANDLING

45W RMS / 140W Peak

With 45 watts RMS and 140 watts peak power handling, the S2-S40C delivers powerful performance for both factory and aftermarket audio systems.

EASY INSTALLATION

Flexible Component Installation

The compact speaker design and included installation hardware make it easier to upgrade select factory locations with improved sound quality and performance.

 


Alpine S2-S40C Recommended Amplifiers | Best 4-Channel Amp Pairings for Hi-Res Component Sound


Build Your Alpine S2-S40C System
Recommended 4-channel amplifiers for clean power, improved dynamics and enhanced Hi-Res Audio performance from the Alpine S2-S40C component speakers
Amplifier Matching Overview
S2-S40C Power Rating: 45W RMS / 140W Peak per speaker
Ideal Amp Range: 45W – 60W RMS per channel @ 4Ω
Recommended Amplifier: High-quality 4-channel Class-D or Class-AB amplifier
Primary Goal: Deliver clean power, improved control and stronger dynamics while maintaining accurate Hi-Res sound
Best Overall S-Series Match
The most natural match for the S2-S40C, delivering 60W RMS x 4 at 4Ω. The additional clean headroom gives the component speakers strong control while maintaining excellent S-Series system synergy.
Best Compact Premium Option
Provides 75W RMS x 4 at 4Ω, offering clean output and additional headroom for the S2-S40C when gains are set correctly. A strong choice for compact premium installations.
Best Value 4-Channel Option
A practical multi-channel amplifier upgrade for the S2-S40C, providing clean amplification and a straightforward path to improved speaker dynamics over factory head-unit power.
Best Sound-Quality Upgrade
Delivers 75W RMS x 4 at 4Ω, providing strong control and detailed sound. Its clean power delivery makes it an excellent premium upgrade when properly gain-matched to the S2-S40C.
Recommended S2-S40C Amplifier Settings
Speaker RMS Rating: 45W RMS per speaker
Recommended Power: 45W – 60W RMS per channel @ 4Ω
Maximum Recommended Headroom: Up to 75W RMS per channel when gains are set correctly
Gain Setting: Set carefully to provide clean output without clipping or excessive speaker stress
HPF Setting: Start around 80Hz – 100Hz to improve speaker control and reduce low-frequency stress
Amplifier Type: High-quality 4-channel Class-D or Class-AB amplifier
Pro Tip: For the best overall system match, pair the Alpine S2-S40C with the Alpine S2-A36F. Its 60W RMS x 4 output at 4Ω provides clean headroom above the speaker's 45W RMS rating, while its Hi-Res Audio capability and S-Series design make it an excellent match for a complete Alpine system.

 


Frequently Asked Questions (FAQ)


  • • Why do the tweeters sound too bright after installation?
    This is often caused by their mounting position, equalizer settings, or crossover placement within the system. Adjusting the tweeter angle and fine-tuning your audio settings usually creates a smoother listening experience.
  • • What kind of dome material do the tweeters use to produce their high frequencies?
    The tweeters are built with a premium cloth silk dome design that delivers smooth, articulate, and non-fatiguing high-frequency playback. This material allows the system to easily reproduce subtle vocal details up to 40,000 Hz for high-resolution audio performance.
  • • Why is one tweeter or woofer not producing any sound?
    This is commonly caused by loose wiring, incorrect crossover connections, or reversed speaker polarity during installation. Inspecting every connection and confirming the crossover wiring usually resolves the issue.
  • • Can I install the tweeters in my factory dash or door locations?
    Yes, the included flush-mount hardware and additional mounting accessories support several installation methods depending on your vehicle. Choosing the proper mounting location helps improve stereo imaging and vocal clarity.
  • • Why do the speakers distort when I turn the volume up?
    Distortion usually occurs because of amplifier clipping, excessive bass boost, or incorrect crossover settings. Proper amplifier gain adjustment and balanced equalizer settings typically eliminate the problem.
  • • Can I detach the fixed grilles from the flush mount tweeter housings to customize the look?
    No, the grilles on the flush mount pods are permanently attached to protect the delicate silk domes from physical contact.
  • • Why do the door panels vibrate more after installing these speakers?
    The improved output can cause loose interior panels and factory mounting surfaces to resonate. Applying sound-deadening material and securely mounting the speakers usually reduces unwanted vibrations.
  • • What is the peak power rating of this component bundle compared to its continuous capability?
    The component system is rated to handle a maximum peak power burst of up to 140 watts for handling rapid musical spikes. However, for continuous daily operation, you should adjust your amplifier setup to match its clean 45-watt RMS rating.
  • • How do the included flat mounting flanges help during a factory replacement?
    The flat mounting flanges are engineered to replicate the standard bolt patterns used by several major vehicle manufacturers. They screw directly onto the woofer basket so you can drop the new drivers into OEM mounting locations without drilling fresh holes.

 


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SPECIFICATIONS


  • Diameter : 4 Inch
  • Sensitivity : 85 dB
  • Frequency Response : 97-40000 Hz
  • Peak Power Handling : 140 Watts
  • RMS Power Handling : 45 Watts

FEATURES


Features:

  • Hi-Res Audio Certified: Officially certified by the Japan Audio Society (JAS) for true high-resolution playback, delivering exceptional clarity and sonic detail from your high-quality music sources.
  • Precision Woofer Construction: 4" polypropylene, glass fiber, and mica composite woofer cone ensures rigid, responsive performance with minimal distortion and clean, accurate midrange output.
  • HAMR Surround Technology: Alpine’s exclusive High Amplitude Multi-Roll surround design allows maximum cone excursion, enhancing low-frequency response and overall dynamic range.
  • Detailed High-Frequency Reproduction: 1" cloth dome tweeter with a threaded removable housing delivers extended, natural treble response beyond the human hearing range for crystal-clear sound imaging.
  • Optimized Installation & Integration: Includes in-line crossovers and versatile mounting hardware for straightforward installation and seamless integration with factory or aftermarket systems.

 

Specifications:

  • System Type: 2-Way Component
  • Woofer Size: 4"
  • Woofer Material: Polypropylene/Glass Fiber/Mica
  • Tweeter: 1" Cloth Dome (separate, with housing)
  • Surround: High Amplitude Multi-Roll (HAMR)
  • Power Handling (RMS): 45 W
  • Peak Power: 140 W
  • Frequency Response: 100–40,000 Hz
  • Sensitivity: 85 dB
  • Impedance: 4 Ohms
  • Mounting Depth: 1.72"
  • Cutout Diameter: 3.68"
  • Certification: Hi-Res Audio Certified
  • UPC: 793276085108
  • Weight: 4
  • Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for repair within 1 year from the original date of purchase with proper return authorization.

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Write a review!
  • Awesome set. Woofers and tweeters complement each other

    Keller
    2/23/2024
free installation

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