Alpine R2-W10D4 10" R-Series R2 Subwoofer Instruction Manual

1. Product Overview

This manual provides essential information for the proper installation, operation, and maintenance of your Alpine R2-W10D4 10-inch R-Series R2 Subwoofer. Please read this manual thoroughly before installation and retain it for future reference.

Image 1.1: Front view of the Alpine R2-W10D4 Subwoofer.

Key Features:

• New Motor Structure: Features larger, double-stacked magnets for enhanced motor force, resulting in deeper bass and tighter control.
• Oversized Dust Cap: Hybrid poly ceramic composite dust cap ensures rigidity and provides internal damping for smooth bass response.
• Increased Accuracy: Alpine’s High Amplitude Multi-Roll (HAMR) Surround Technology allows efficient air movement while maintaining cone stability for precise audio reproduction.
• Twist-Lock Grille Mount System: Facilitates easy and secure grille installation (grille sold separately).

2. Safety Information

To prevent injury or damage to the product, observe the following safety precautions:

• Always disconnect the vehicle's negative battery terminal before beginning any installation.
• Ensure proper wiring connections. Incorrect wiring can cause damage to the subwoofer, amplifier, or vehicle electrical system.
• Mount the subwoofer securely to prevent it from becoming a projectile in the event of a sudden stop or accident.
• Avoid exposing the subwoofer to moisture or extreme temperatures. This product is not waterproof.
• Do not operate the subwoofer at excessively high volumes for prolonged periods, as this can cause hearing damage.
• Consult a professional installer if you are unsure about any part of the installation process.

3. Package Contents

Verify that all items are present in the package:

• Alpine R2-W10D4 10" R-Series R2 Subwoofer (1 unit)

4. Installation

Mounting Considerations:

The Alpine R2-W10D4 is designed for flush mount installation. Ensure adequate clearance for the subwoofer's depth and diameter within your chosen enclosure or mounting location. Proper enclosure design is critical for optimal performance.

Image 4.1: Front and side view of the Alpine R2-W10D4 Subwoofer, showing mounting flange.

Enclosure Types:

The R2-W10D4 can be used in both sealed and ported enclosures. Refer to Alpine's official documentation or a qualified installer for recommended enclosure volumes and port tuning frequencies to achieve desired sound characteristics.

• Sealed Enclosures: Typically provide tighter, more accurate bass response, suitable for sound quality-focused systems.
• Ported Enclosures: Generally offer higher output and deeper bass extension, often preferred for SPL (Sound Pressure Level) applications.

5. Wiring Instructions

The Alpine R2-W10D4 features dual 4-ohm voice coils, offering flexibility in wiring configurations to match your amplifier's impedance requirements. Always ensure your amplifier is stable at the chosen impedance.

Image 5.1: Rear view of the Alpine R2-W10D4 Subwoofer, showing the dual voice coil terminals.

Dual Voice Coil (DVC) Wiring Configurations:

• Series Wiring (8 Ohm Total):
  Connect the positive (+) terminal of Voice Coil 1 to the negative (-) terminal of Voice Coil 2. Connect the remaining negative (-) terminal of Voice Coil 1 and the remaining positive (+) terminal of Voice Coil 2 to your amplifier's output. This configuration results in an 8-ohm load.
• Parallel Wiring (2 Ohm Total):
  Connect both positive (+) terminals of Voice Coil 1 and Voice Coil 2 together. Connect both negative (-) terminals of Voice Coil 1 and Voice Coil 2 together. Connect the combined positive terminals to your amplifier's positive output and the combined negative terminals to your amplifier's negative output. This configuration results in a 2-ohm load.

Important: Always verify the final impedance with a multimeter before connecting to your amplifier. Ensure your amplifier is stable at the selected impedance to prevent damage.

6. Operating Instructions

Initial Setup and Tuning:

• After installation, set your amplifier's gain to its minimum level.
• Play music with a wide dynamic range. Gradually increase the amplifier's gain until you hear distortion, then reduce it slightly until the sound is clear.
• Adjust the low-pass filter (LPF) on your amplifier or head unit to blend the subwoofer's output seamlessly with your main speakers. A common starting point is 80-100 Hz.
• Use the phase control (if available on your amplifier) to ensure the subwoofer's output is in phase with your main speakers for optimal bass impact.

Recommended Usage:

Allow a break-in period of several hours of moderate listening before operating the subwoofer at high volumes. This allows the suspension components to loosen and perform optimally.

7. Maintenance

Cleaning and Care:

• Regularly inspect the subwoofer for any signs of damage or loose connections.
• Clean the cone and surround with a soft, dry cloth. Avoid using harsh chemicals or solvents.
• Ensure the subwoofer is protected from direct sunlight and extreme temperatures, which can degrade materials over time.

8. Troubleshooting

Common Issues and Solutions:

9. Specifications

Technical specifications for the Alpine R2-W10D4 Subwoofer:

Image 9.1: Side view of the Alpine R2-W10D4 Subwoofer, highlighting the motor structure.

10. Warranty and Support

Warranty Information:

This Alpine R2-W10D4 Subwoofer comes with a Limited Warranty. For specific terms, conditions, and duration of the warranty, please refer to the warranty card included with your product or visit the official Alpine website.

Customer Support:

For technical assistance, troubleshooting, or warranty claims, please contact Alpine customer support directly. Contact information can typically be found on the Alpine website or in the product packaging.