Nemesis NA-8EV.2 D4 Car Audio Speaker User Manual

1. Introduction

Thank you for choosing the Nemesis NA-8EV.2 D4 Car Audio Speaker. This manual provides essential information for the proper installation, operation, and maintenance of your new speaker. Please read this manual thoroughly before installation and keep it for future reference. This speaker is designed to deliver powerful and clear audio performance in a car environment.

2. Safety Information

Always observe the following safety precautions to prevent injury or damage to the product and vehicle:

• Professional Installation Recommended: Installation of car audio components can be complex and may require specialized tools and knowledge. If you are unsure, consult a qualified professional installer.
• Disconnect Battery: Before beginning any wiring, always disconnect the vehicle's negative battery terminal to prevent electrical shorts and damage.
• Proper Wiring: Ensure all wiring is correctly connected, insulated, and secured to prevent shorts, overheating, and fire hazards. Use appropriate gauge wire for power and speaker connections.
• Ventilation: Ensure the speaker enclosure and amplifier (if used) have adequate ventilation to prevent overheating.
• Volume Levels: Prolonged exposure to high volume levels can cause hearing damage. Adjust volume to a safe and comfortable level.
• Secure Mounting: Securely mount the speaker to prevent it from becoming a projectile in the event of a sudden stop or collision.

3. Package Contents

Verify that all items are present in the package:

• 1x Nemesis NA-8EV.2 D4 Car Audio Speaker
• User Manual (this document)

Note: Mounting hardware may be sold separately or included with specific vehicle installation kits.

4. Product Overview

The Nemesis NA-8EV.2 D4 is an 8-inch dual 4-ohm voice coil (DVC) car audio speaker designed for high-performance bass reproduction. Its robust construction ensures durability and consistent sound quality.

Figure 4.1: Angled view of the Nemesis NA-8EV.2 D4 speaker, showcasing the cone, surround, and terminal connections. This view highlights the overall design and build quality.

Figure 4.2: Top-down view of the Nemesis NA-8EV.2 D4 speaker, showing the Nemesis Audio logo on the dust cap and the white stitching on the surround. This perspective emphasizes the speaker's face.

Figure 4.3: Rear view of the Nemesis NA-8EV.2 D4 speaker, displaying the robust motor structure, magnet, and dual voice coil terminals. This view is crucial for understanding the speaker's depth and wiring points.

5. Setup and Installation

Proper setup is crucial for optimal performance and longevity of your speaker.

5.1 Pre-Installation Checks

• Vehicle Compatibility: Ensure the speaker size (8 inches) and mounting depth are compatible with your vehicle's intended installation location.
• Amplifier Matching: Verify that your amplifier can safely deliver the required power (RMS and Max) to the speaker and is stable at the impedance created by your wiring configuration. This speaker has a 500W RMS / 1000W Max power rating.
• Enclosure Design: For optimal bass response, this speaker should be installed in a properly designed and constructed sealed or ported enclosure. Consult speaker enclosure design resources for recommended volumes.

5.2 Wiring Configurations (Dual 4-Ohm Voice Coil)

The NA-8EV.2 D4 features dual 4-ohm voice coils, offering flexibility in wiring to achieve different final impedances.

• 2-Ohm Parallel Wiring: Connect the positive (+) terminals of both voice coils together, and the negative (-) terminals of both voice coils together. Connect the amplifier's positive output to the combined positive terminals and the amplifier's negative output to the combined negative terminals. This configuration presents a 2-ohm load to the amplifier.
• 8-Ohm Series Wiring: Connect the positive (+) terminal of one voice coil to the negative (-) terminal of the other voice coil. Connect the amplifier's positive output to the remaining positive terminal and the amplifier's negative output to the remaining negative terminal. This configuration presents an 8-ohm load to the amplifier.

Important: Always ensure your amplifier is stable at the chosen impedance. Connecting an amplifier to an impedance lower than its stable rating can cause damage to the amplifier and speaker.

5.3 Mounting the Speaker

1. Prepare Enclosure: If using a custom enclosure, ensure the speaker cutout is precisely sized for an 8-inch speaker and that the mounting surface is flat and rigid.
2. Position Speaker: Carefully place the speaker into the mounting hole, aligning the screw holes.
3. Secure Speaker: Use appropriate screws (not included) to secure the speaker to the enclosure. Tighten screws evenly and firmly, but do not overtighten, as this can strip threads or damage the speaker frame.
4. Connect Wiring: Connect the speaker wires from the amplifier to the speaker terminals according to your chosen wiring configuration (2-ohm parallel or 8-ohm series). Ensure polarity is correct (+ to + and - to -).

6. Operating Instructions

Once installed, follow these steps to operate your Nemesis NA-8EV.2 D4 speaker:

1. Initial Power-Up: After all connections are made and verified, reconnect the vehicle's negative battery terminal.
2. Amplifier Settings: Set your amplifier's gain (input sensitivity) correctly to match the output voltage of your head unit. Start with the gain at minimum and slowly increase it until you hear distortion, then back off slightly.
3. Crossover Settings: Use your amplifier's or head unit's low-pass filter (LPF) to send only bass frequencies to the speaker. A common starting point for an 8-inch subwoofer is an LPF setting between 60Hz and 100Hz.
4. Break-in Period: Allow a break-in period of approximately 20-30 hours of normal listening before playing the speaker at high volumes. This allows the speaker's suspension components to loosen up and perform optimally.
5. Listening Levels: Avoid prolonged listening at extremely high volumes, which can lead to speaker damage or premature failure. If you hear distortion, reduce the volume immediately.

7. Maintenance

The Nemesis NA-8EV.2 D4 speaker requires minimal maintenance.

• Cleaning: Gently wipe the speaker cone and surround with a soft, dry cloth to remove dust. Avoid using harsh chemicals or excessive moisture.
• Inspection: Periodically inspect the speaker for any signs of damage, such as tears in the cone or surround, loose connections, or corrosion on the terminals.
• Environmental Factors: Protect the speaker from extreme temperatures, direct sunlight, and moisture, which can degrade materials over time.

8. Troubleshooting

If you experience issues with your Nemesis NA-8EV.2 D4 speaker, refer to the following common problems and solutions:

If the problem persists after attempting these solutions, contact Nemesis customer support or a qualified car audio technician.

9. Specifications

Technical specifications for the Nemesis NA-8EV.2 D4 Car Audio Speaker:

Note: Some specifications are general attributes and may not directly apply to a DVC subwoofer.

10. Warranty and Support

The Nemesis NA-8EV.2 D4 Car Audio Speaker comes with a Limited Warranty.

For specific details regarding the warranty period, coverage, and claims process, please refer to the warranty card included with your product or visit the official Nemesis Audio website.

Customer Support

If you have any questions, require technical assistance, or need to report an issue that cannot be resolved using the troubleshooting guide, please contact Nemesis customer support.

• Manufacturer: Nemesis
• Website: www.nemesisaudio.com (Hypothetical link, as no official website was provided in the JSON.)
• Seller Support: For purchase-related inquiries, contact "Moon Car Stereo" via your Amazon order history.

Please have your product model number (NA-8EV.2 D4) and proof of purchase ready when contacting support.