1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your Nemesis Audio NA-10S4 Car Subwoofer. Please read this manual thoroughly before attempting installation or operation to ensure optimal performance and safety.
2. Product Overview and Key Features
The Nemesis Audio NA-10S4 is a 10-inch car subwoofer designed to deliver powerful bass. It is part of the Stage 1 Series, engineered for robust audio performance in vehicle environments.
Key Features:
- Stage 1 Series Car Audio Subwoofer: Engineered for reliable performance.
- Size: 10 inches (25.4 cm) diameter.
- Power Handling: 450 Watts RMS (Root Mean Square) power, indicating continuous power handling capability.
- Impedance: Single 4-Ohm Voice Coil (SVC), suitable for various amplifier configurations.

Figure 2.1: Front view of the Nemesis Audio NA-10S4 subwoofer, highlighting the cone and central logo.

Figure 2.2: Side view of the Nemesis Audio NA-10S4 subwoofer, illustrating the robust construction and speaker terminals.

Figure 2.3: Rear view of the Nemesis Audio NA-10S4 subwoofer, displaying the magnet assembly and product label.
3. Setup and Installation
Proper installation is crucial for the performance and longevity of your subwoofer. It is highly recommended that installation be performed by a qualified car audio professional.
3.1 Enclosure Requirements:
- The NA-10S4 is designed for flush mounting. Ensure your enclosure provides adequate depth and volume.
- Consider the subwoofer's dimensions: approximately 13 x 13 x 8 inches (33 x 33 x 20.3 cm) for enclosure design.
3.2 Wiring and Connectivity:
- The subwoofer features a Single 4-Ohm Voice Coil (SVC). Ensure your amplifier is stable at a 4-ohm load.
- Connect the subwoofer to your amplifier's output using appropriate gauge speaker wire.
- Audio input to the amplifier typically uses RCA connectivity from your head unit or signal processor.
- Ensure all connections are secure and properly insulated to prevent short circuits.
3.3 Power Source:
The subwoofer requires a corded electric power source, supplied by your vehicle's electrical system through a dedicated amplifier. Ensure your vehicle's charging system can support the amplifier's power requirements.
4. Operating Instructions
Once installed, the subwoofer operates as part of your car's audio system. The subwoofer's voice coil converts electrical audio signals into mechanical vibrations to produce sound.
4.1 Initial Power-Up:
- Before turning on your audio system, double-check all wiring connections.
- Start with the amplifier's gain settings at their minimum.
- Gradually increase the volume and adjust amplifier settings (gain, crossover, bass boost) to achieve desired sound quality without distortion.
4.2 Audio Source Compatibility:
The subwoofer is designed to reproduce low-frequency audio from any compatible car audio head unit or signal processor. This includes audio originating from devices such as smartphones, tablets, MP3 players, or other media sources connected to your car's main audio system.
4.3 Audio Output Mode:
The NA-10S4 operates in mono audio output mode, as is typical for subwoofers, reproducing a single low-frequency channel.
5. Maintenance
The Nemesis Audio NA-10S4 subwoofer requires minimal maintenance to ensure long-term performance.
- Cleaning: Periodically wipe the subwoofer's exterior with a soft, dry cloth to remove dust and debris. Avoid using harsh chemicals or abrasive cleaners.
- Inspection: Regularly inspect the speaker cone and surround for any signs of damage or wear. Check wiring connections for looseness or corrosion.
- Environmental Conditions: This subwoofer is not waterproof. Ensure it is installed in a dry environment, protected from moisture and extreme temperatures.
- Ventilation: Ensure the subwoofer and its enclosure have adequate ventilation, especially if installed in a sealed space, to prevent overheating.
6. Troubleshooting
If you experience issues with your Nemesis Audio NA-10S4 subwoofer, refer to the following common troubleshooting steps:
6.1 No Sound Output:
- Check Power: Ensure your amplifier is receiving power and is turned on. Check fuses and power connections.
- Check Signal: Verify that the amplifier is receiving an audio signal from your head unit or source.
- Check Speaker Wires: Inspect all speaker wire connections at both the subwoofer and the amplifier for secure contact and proper polarity.
- Amplifier Settings: Confirm that amplifier gain is not set too low and that crossover settings are appropriate for subwoofer operation.
6.2 Distorted Sound:
- Gain Setting: Reduce the amplifier's gain setting. Overdriving the amplifier or subwoofer can cause distortion.
- Clipping: If the amplifier's clipping indicator is active, reduce the input signal or gain.
- Enclosure Issues: Ensure the subwoofer is properly mounted in a suitable enclosure without air leaks.
- Damaged Components: Inspect the subwoofer cone and surround for any physical damage.
6.3 Overheating:
- Ventilation: Ensure adequate airflow around the amplifier and subwoofer.
- Impedance Mismatch: Verify that the amplifier's impedance load matches the subwoofer's 4-ohm impedance.
- Overpowering: Ensure the amplifier's RMS output does not significantly exceed the subwoofer's 450W RMS rating.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | NA-10S4 |
| Speaker Type | Subwoofer |
| Subwoofer Diameter | 10 Inches |
| Power Handling (RMS) | 450 Watts |
| Impedance | Single 4-Ohm Voice Coil (SVC) |
| Connectivity Technology | Wired (RCA input to amplifier) |
| Audio Output Mode | Mono |
| Mounting Type | Flush Mount |
| Product Dimensions (L x W x H) | 13 x 13 x 8 inches (33 x 33 x 20.3 cm) |
| Item Weight | 18 pounds (8.16 kg) |
| Waterproof | No |
| Included Components | As per manufacturer's site (typically the subwoofer unit) |
| UPC | 764488484614 |
8. Warranty and Support
8.1 Product Warranty:
For information regarding the product warranty, please refer to the specific warranty policy provided by Nemesis Audio or the retailer at the time of purchase. Generally, warranty terms are subject to Amazon's policies for products sold through their platform.
8.2 Customer Support:
For technical assistance, installation queries, or any other support needs, please contact Nemesis Audio customer service or the authorized dealer from whom you purchased the product. As a product from a small business brand, your support is valued.
You may also refer to the customer support options available through the platform where the product was purchased, such as Amazon's customer service for returns or general inquiries.





