1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your Pyramid BNPS122.5 12-inch 1200W Car Audio Bandpass Subwoofer System. Please read this manual thoroughly before use to ensure optimal performance and safety.
2. Key Features
- Dual High Power Subwoofers: Equipped with two 12-inch, 4-ohm subwoofers designed for enhanced bass reproduction.
- 1200 Watts Peak Power: Capable of handling up to 1200 watts of peak power for robust audio output.
- Bandpass Alignment: Features a bandpass enclosure design optimized for producing deep bass frequencies.
- Four Tuned Ports: The enclosure includes four specially tuned ports to deliver sound from the sealed chamber to the ported chamber, enhancing bass response.
- Durable Construction: Designed with a specially treated black rubber edge suspension for speaker longevity and a silver polypropylene cone for lightweight and responsive movement.
- Integrated Neon Accent Lighting: Includes built-in blue neon accent lighting for visual appeal.
- Plexi-Glass Front Window: A transparent front window allows visibility of the internal components and lighting.
3. What's in the Box
- 1 x Pyramid BNPS122.5 Car Audio Subwoofer System
- 1 x Wireless Remote Control
- 1 x Power Cable (with car charger adapter)

Figure 3.1: Included accessories with the Pyramid BNPS122.5 subwoofer system.
4. Setup and Installation
Proper installation is crucial for the performance and longevity of your subwoofer. If you are unsure about any steps, it is recommended to seek professional assistance.
4.1 Placement
Position the subwoofer securely in your vehicle's trunk or cargo area. Ensure it is stable and will not shift during driving. The bandpass design allows for flexible placement while maintaining bass quality.

Figure 4.1: Example placement of the subwoofer in a vehicle's trunk.
4.2 Wiring Connections
Connect the subwoofer to your car's audio system and power source. The unit requires a DC 12V input.
- Power Connection: Connect the provided power cable to a suitable 12V power source in your vehicle. Ensure proper fusing for safety.
- Audio Input: Connect the audio signal from your head unit or amplifier to the subwoofer's input terminals. The subwoofer has a 4-ohm impedance.
- Ground Connection: Securely connect the ground wire to a clean, unpainted metal surface on the vehicle's chassis.

Figure 4.2: Connecting speaker wires to the subwoofer terminals.
Video 4.1: This video demonstrates the unboxing and basic wiring harness connections for a similar Pioneer subwoofer. While not the exact model, it provides a general overview of power, ground, and remote wire connections relevant to car audio subwoofers.
5. Operating Instructions
Once installed, operate your subwoofer using your car's head unit and the provided wireless remote control.
5.1 Powering On/Off
The subwoofer typically powers on automatically when your car's audio system is activated, provided the remote turn-on wire is correctly connected. It will power off when the audio system is turned off.
5.2 Adjusting Bass Levels
Use the wireless remote control to adjust the bass output level to your preference. Start with a lower setting and gradually increase it to avoid distortion or damage.

Figure 5.1: Wireless remote control for bass and lighting adjustments.
5.3 Neon Accent Lighting
The built-in blue neon accent lighting can be controlled via the wireless remote. Adjust brightness, mode, and speed settings as desired.

Figure 5.2: The subwoofer's neon accent lighting through the plexi-glass window.
6. Maintenance
Regular maintenance helps ensure the longevity and performance of your subwoofer system.
- Cleaning: Use a soft, dry cloth to wipe down the exterior of the enclosure. For the carpeted surfaces, a vacuum cleaner with a brush attachment can remove dust and debris. Avoid using harsh chemicals or abrasive cleaners.
- Connection Check: Periodically inspect all wiring connections to ensure they are secure and free from corrosion. Loose connections can lead to poor performance or damage.
- Ventilation: Ensure the amplifier's heat sink (if visible) and any ports are not obstructed to allow for proper cooling.
7. Troubleshooting
If you experience issues with your subwoofer, refer to the following common troubleshooting steps:
- No Sound:
- Check all power and ground connections. Ensure the power cable is securely connected to a 12V source and the ground wire is firmly attached to the chassis.
- Verify the remote turn-on wire is connected and receiving a signal from your head unit.
- Confirm audio input cables are properly connected to both the head unit and the subwoofer.
- Check the fuse on the subwoofer's amplifier (if accessible) and your car's fuse box.
- Distorted Sound:
- Reduce the bass level on your head unit or the subwoofer's remote control.
- Check for loose wiring connections, especially speaker wires.
- Ensure the subwoofer is not overdriven.
- Subwoofer Not Powering On:
- Inspect the power indicator light on the subwoofer. If it's off, recheck power, ground, and remote connections.
- Test the 12V power source to ensure it is providing power.
If problems persist after attempting these steps, contact customer support or a qualified car audio technician.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | Pyramid |
| Model Number | BNPS122.5 |
| Speaker Type | Subwoofer |
| Subwoofer Diameter | 12 Inches (x2) |
| Speaker Maximum Output Power | 1200 Watts (Peak) |
| Frequency Response | 35Hz-1KHz |
| Input Voltage | 12 Volts (DC) |
| Impedance | 4 Ohm |
| Material | Aluminum (Cone), Polypropylene (Cone), Rubber (Edge Suspension) |
| Product Dimensions | 16"D x 31.5"W x 15.5"H |
| Item Weight | 61.9 pounds |
| Special Features | Bass Boost, Hi Res Audio, Neon Accent Lighting, Plexi-Glass Front Window |
| Connectivity Technology | Auxiliary, Wired |
| UPC | 068888043540 |
9. Warranty and Support
The Pyramid BNPS122.5 Car Audio Subwoofer System comes with a limited warranty. For specific details regarding warranty coverage, duration, and terms, please refer to the warranty card included in your product packaging or contact Pyramid customer support.
For technical assistance, troubleshooting, or any product-related inquiries, please visit the official Pyramid website or contact their customer service department. Contact information can typically be found on the product packaging or the brand's official website.





