Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Alpine S2-S65C Next-Generation S-Series 6.5" Component Speaker Set. Please read this manual thoroughly before attempting installation or operation to ensure proper use and optimal performance. Keep this manual for future reference.

Image: The Alpine S2-S65C component speaker set, featuring two 6.5-inch woofers and two tweeters.
Safety Information
Always observe the following safety precautions to prevent injury or damage to the product and vehicle:
- Professional Installation Recommended: For optimal performance and safety, professional installation by a qualified technician is highly recommended.
- Disconnect Battery: Before starting any electrical work, disconnect the vehicle's negative battery terminal to prevent electrical shorts and damage.
- Proper Wiring: Ensure all wiring connections are secure and correctly insulated to prevent short circuits. Use appropriate gauge wiring for power and speaker connections.
- Mounting Security: Securely mount all components to prevent them from becoming loose during vehicle operation, which could cause injury or damage.
- Avoid Obstruction: Do not install speakers in locations that obstruct airbags, driver visibility, or vehicle controls.
- Volume Control: Prolonged exposure to high volume levels can cause hearing damage. Adjust volume to a safe and comfortable level.
Package Contents
Verify that all items are present in the package:
- Two (2) 6.5" Woofers (S2-S65C)
- Two (2) 1" Tweeters with threaded removable housing
- Two (2) In-line Crossovers
- Mounting Hardware for Tweeters
- Wiring for Tweeters
- Instruction Manual (this document)
Product Features
- Hi-Res Audio Certified: The S2-S65C speakers are Hi-Res Audio Certified, capable of reproducing frequencies up to 40kHz for accurate and natural sound reproduction.
- Reliable Performance: Constructed with a blend of Poly Propylene, Glass Fiber, and Mica Cone materials, these speakers offer lightweight design, high output, and low distortion for clear audio.

Image: Close-up view of the S2-S65C woofer cone, highlighting its textured surface and durable construction.
- HAMR Surround Technology: Alpine's High Amplitude Multi-Roll (HAMR) surround technology allows for maximum cone movement, delivering powerful and accurate bass.

Image: Detailed view of the HAMR surround on the S2-S65C woofer, designed for extended cone excursion.
- Enhanced Component Design: Features 6.5" woofers and 1" tweeters with a peak power of 240W and RMS power of 80W. OEM fitment design and in-line crossovers facilitate seamless integration.

Image: Rear view of the S2-S65C woofer, showing the speaker terminals and magnet structure.

Image: Close-up of an S2-S65C tweeter, showing its protective grille and compact design.
- Speaker Grille Compatibility: Compatible with the KTE-S65G Speaker Grille (sold separately) for protection and enhanced visual appeal.

Image: An S2-S65C woofer shown with the optional KTE-S65G speaker grille installed, providing protection.
Setup and Installation
This section provides general guidelines for installing your Alpine S2-S65C component speakers. Specific vehicle requirements may vary. Consult your vehicle's service manual or a professional installer for detailed instructions.
- Planning: Determine the optimal mounting locations for the woofers and tweeters in your vehicle. Consider factory speaker locations or custom mounting options.
- Preparation: Gather all necessary tools, wiring, and mounting hardware. Disconnect the vehicle's negative battery terminal.
- Woofer Installation:
- Remove existing speakers from the desired location.
- Mount the S2-S65C woofers securely using appropriate screws and adapters if needed. Ensure a tight seal to maximize bass response.
- Connect the woofer wires to the vehicle's speaker wiring, observing correct polarity (+ to + and - to -).
- Tweeter Installation:
- Choose a mounting method for the tweeters (flush mount, surface mount, or factory location). The threaded removable housing allows for flexible installation.
- Install the tweeters in the chosen location, ensuring they are aimed towards the listening area for optimal sound imaging.
- Connect the tweeter wires to the in-line crossovers, then connect the crossovers to the amplifier or head unit's tweeter output.
- Crossover Connection: The in-line crossovers are designed to separate audio frequencies, sending low frequencies to the woofers and high frequencies to the tweeters. Connect them according to the provided wiring diagram (if applicable, typically printed on packaging or a separate sheet).
- Testing: Reconnect the vehicle's battery. Test the speakers at a low volume to ensure all connections are correct and sound is clear. Gradually increase volume and check for any distortion or issues.
Operating Instructions
Once installed, your Alpine S2-S65C speakers are ready for use. Follow these general guidelines for optimal listening experience:
- Break-in Period: Allow a break-in period of approximately 20-30 hours of normal listening. During this time, the speaker components will loosen up, leading to improved sound quality.
- Volume Adjustment: Adjust the volume on your head unit or amplifier to a comfortable listening level. Avoid prolonged listening at excessively high volumes to prevent hearing damage and speaker distortion.
- Audio Settings: Utilize your head unit's or amplifier's equalizer and sound processing features to fine-tune the audio to your preference. These speakers are designed to reproduce a wide frequency range, so experiment with settings to achieve your desired sound.
- Amplification: While these speakers can be driven by a stock head unit, an external amplifier (80W RMS per channel recommended) will unlock their full potential, providing greater clarity, dynamics, and bass response.
Maintenance
Proper care will ensure the longevity and performance of your Alpine S2-S65C speakers:
- Cleaning: Gently wipe the speaker cones and surrounds with a soft, dry cloth to remove dust. Avoid using harsh chemicals or abrasive cleaners.
- Protection: If exposed to potential physical damage (e.g., in a trunk or cargo area), consider installing the optional KTE-S65G speaker grilles.
- Environmental Factors: Protect speakers from extreme temperatures, direct sunlight, and excessive moisture.
- Regular Inspection: Periodically check mounting screws and wiring connections to ensure they remain secure.
Troubleshooting
If you encounter issues with your Alpine S2-S65C speakers, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound from Speakers |
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| Distorted Sound |
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| Weak Bass Response |
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| No Sound from Tweeters |
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If the problem persists after attempting these solutions, contact Alpine customer support or a qualified service center.
Specifications
| Feature | Detail |
|---|---|
| Model Number | S2-S65C |
| Speaker Type | 6.5" Component Speaker Set |
| Woofer Size | 6.5 inches (16.5 cm) |
| Tweeter Size | 1 inch |
| Peak Power Handling | 240W |
| RMS Power Handling | 80W |
| Frequency Response | Up to 40kHz (Hi-Res Audio Certified) |
| Woofer Cone Material | Poly Propylene, Glass Fiber, and Mica Cone |
| Surround Technology | HAMR (High Amplitude Multi-Roll) |
| Item Weight | 7 pounds (approx. 3.17 kg) |
| Product Dimensions | 18 x 9 x 6 inches (approx. 45.7 x 22.9 x 15.2 cm) |
| Date First Available | June 5, 2023 |
| Manufacturer | Alpine |
Warranty and Support
Your Alpine S2-S65C speaker set is covered by a manufacturer's warranty. Please retain your proof of purchase for warranty claims.
- Manufacturer Warranty: 1-Year Manufacturer Warranty.
- Extended Protection Plans: Additional protection plans may be available for purchase separately. Refer to your retailer for details on 2-Year or 3-Year protection plans.
- Customer Support: For technical assistance, warranty service, or further inquiries, please visit the official Alpine website or contact their customer service department.
For more information, visit the Alpine Store on Amazon.





