Belva BXA15001 BX-Series Monoblock Car Audio Amplifier Instruction Manual

1. Introduction

This manual provides comprehensive instructions for the installation, operation, and maintenance of your Belva BXA15001 BX-Series Monoblock Car Audio Amplifier. Please read this manual thoroughly before attempting installation or operation to ensure proper use and to prevent damage to the unit or your vehicle's audio system.

2. Safety Information

Always disconnect the vehicle's battery negative terminal before installing or servicing any electrical components. Ensure all wiring is properly routed and secured to prevent damage. Use appropriate gauge wiring for power and ground connections. Avoid mounting the amplifier in locations exposed to direct sunlight, excessive heat, moisture, or dust. Professional installation is recommended for optimal performance and safety.

3. Product Overview

The Belva BXA15001 is a 1500W Peak BX-Series 2-Ohm Stable Class-A/B Monoblock Car Audio MOSFET Amplifier designed to deliver powerful and clear bass performance. It features advanced circuitry for efficiency and protection, along with user-friendly controls for fine-tuning your audio experience.

Key Features:

• Max Power Rating: 1500 Watts
• Power Rating: 4 ohms: 750 watts x 1 | 2 ohms: 1500 watts x 1
• Extreme Efficiency: Class A/B amplifier with 3-way protection circuitry (thermal, overload, speaker shortages) and MOSFET transistor design.
• User Control: Features a variable Bass EQ for precise bass and gain tuning.
• Versatile Inputs: Equipped with both high-level (speaker level) and low-level (RCA) inputs for broad compatibility.

Amplifier Components:

Image 3.1: Top view of the Belva BXA15001 amplifier, highlighting the input and control panel.

Image 3.2: Close-up of the control panel on the Belva BXA15001 amplifier, showing RCA inputs, gain, LPF, mode, bass EQ, and remote port.

Image 3.3: Rear view of the Belva BXA15001 amplifier, displaying the power input terminals, fuse, and speaker output terminals.

4. Setup & Installation

4.1 Mounting the Amplifier

Select a secure and well-ventilated location for mounting the amplifier. Ensure it is protected from moisture and direct heat. Use the provided mounting screws to firmly attach the amplifier to a solid surface in your vehicle.

4.2 Wiring Connections

Proper wiring is crucial for performance and safety. Follow the guidelines below:

• Power Input (+12V): Connect a heavy-gauge power cable (e.g., 4-gauge) from the vehicle's positive battery terminal to the +12V terminal on the amplifier. Install an inline fuse (not supplied) within 18 inches of the battery.
• Ground Input (GND): Connect a heavy-gauge ground cable (e.g., 4-gauge) from the GND terminal on the amplifier to a clean, unpainted metal surface on the vehicle's chassis. Ensure a solid, low-resistance connection.
• Remote Turn-On (REM): Connect a remote turn-on wire (e.g., 18-gauge) from your head unit's remote output to the REM terminal on the amplifier. This wire signals the amplifier to turn on/off with your head unit.
• Fuses: The amplifier uses two 30 Amp ATO/ATC fuses. Ensure these are correctly installed before operation.
• Speaker Output: Connect your subwoofer(s) to the SPEAKER OUTPUT terminals. Observe correct polarity (+ to + and - to -) for optimal performance. This monoblock amplifier supports 2-Ohm stable operation.

4.3 Audio Input Connections

The BXA15001 amplifier offers both high-level and low-level input options:

• Low-Level Input (RCA): For head units with RCA pre-amp outputs, connect RCA cables from the head unit's subwoofer output to the amplifier's RCA INPUTs.
• High-Level Input: If your head unit does not have RCA outputs, you can use the high-level input. Connect the speaker wires from your head unit directly to the HI INPUT terminal block.

4.4 Remote Subwoofer Level Control

Connect the included remote subwoofer level control to the 'REMOTE' port on the amplifier. This allows for convenient adjustment of the subwoofer's output level from the driver's seat.

Image 4.1: The remote subwoofer level control unit with its cable, designed for easy access and adjustment.

4.5 Bridged Mode (Strapping)

The amplifier supports strapping (bridged mode) for connecting multiple amplifiers. Refer to the detailed wiring diagrams in the full product manual for specific instructions on master/slave configuration using the 'DATA LINK' port and 'BRIDGED MODE' switch.

5. Operating Instructions

5.1 Initial Power-Up

Once all connections are secure, reconnect the vehicle's battery. The 'POWER' indicator light on the amplifier should illuminate green. If the 'PROTECT' light illuminates red, there may be a wiring issue or fault. Refer to the troubleshooting section.

5.2 Adjusting Controls

• Input Level (Gain): Adjust this control to match the output voltage of your head unit. Start with the gain at minimum and slowly increase it until the sound is clear and powerful without distortion.
• Subsonic Filter: This filter removes extremely low frequencies that are inaudible and can damage your subwoofer. Adjust it to protect your subwoofer and improve sound quality.
• LPF (Low Pass Filter): This control sets the upper frequency limit for the subwoofer. Adjust it to blend the subwoofer's output seamlessly with your main speakers.
• Bass Boost: Use this variable control to enhance bass output. Start at 0dB and increase gradually to your preference. Excessive bass boost can cause distortion.
• Phase Switch: This switch (0°/180°) helps to align the phase of the subwoofer with your main speakers. Experiment with both settings to find the one that produces the most impactful and cohesive bass.

5.3 Setting Amplifier Gain

Setting the gain correctly is crucial for optimal sound quality and amplifier longevity. The following video provides a detailed guide on how to set the gain on your car subwoofer amplifier:

6. Maintenance

Regular maintenance ensures the longevity and performance of your amplifier:

• Cleaning: Periodically wipe the amplifier's exterior with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners.
• Connection Checks: Regularly inspect all power, ground, remote, and speaker connections to ensure they are tight and free from corrosion. Loose connections can lead to poor performance or damage.
• Ventilation: Ensure the amplifier's heatsink fins are free from obstructions to allow for proper heat dissipation.

7. Troubleshooting

If you experience issues with your amplifier, consult the following common problems and solutions:

• No Power: Check the inline fuse near the battery and the fuses on the amplifier. Verify all power, ground, and remote connections are secure. Ensure the remote turn-on wire is receiving +12V when the head unit is on.
• Protection Light (Red LED) On: This indicates a fault. Check speaker wiring for shorts or incorrect impedance. Ensure proper ventilation to prevent overheating. Reduce the gain setting if it's too high.
• No Sound: Verify all RCA or high-level input connections. Check speaker wires for proper connection and polarity. Ensure the head unit's volume is up and not muted.
• Distorted Sound: Reduce the gain setting on the amplifier. Check for proper LPF and subsonic filter settings. Ensure your subwoofer is not overdriven.

If problems persist after checking these points, consult a professional car audio technician.

8. Specifications

9. Official Product Video

For a visual overview of the Belva BX-Series Car Audio Amplifier, including its features and design, please watch the official product video below:

10. Warranty & Support

For warranty information, technical support, or to explore other BELVA products, please visit the official BELVA Store:

Visit the BELVA Store

Protection plans are also available for purchase to extend coverage for your product.