Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Soundstream MR5.2000D Rubicon Nano 2000W Class D 5-Channel Marine Amplifier. This high-efficiency Class D amplifier is designed for marine environments, offering robust performance and durability. Please read this manual thoroughly before installation and use to ensure proper function and safety.
The MR5.2000D features a military-grade SMT PCB for dynamic performance, direct short, thermal, and overload protection circuits, and flexible input options including 200mV-6V low-level RCA or high-level signal input with a quick-disconnect wire harness. It also includes easy DIY install single-sided terminals, 4-gauge power input/output terminals, 12-gauge speaker output terminals, and variable 12dB high-pass, low-pass, and subsonic crossovers, along with a 12dB bass boost.
Safety Information
Always observe the following safety precautions to prevent injury or damage to the amplifier and connected components:
- Disconnect the vehicle's battery negative terminal before starting any installation.
- Ensure all wiring is properly routed and secured to prevent pinching or damage.
- Use appropriate gauge wiring for power, ground, and speaker connections as specified.
- Install the amplifier in a location that allows for adequate ventilation to prevent overheating.
- Avoid mounting the amplifier in direct sunlight or areas exposed to excessive moisture or extreme temperatures.
- Do not attempt to open or modify the amplifier. Refer all servicing to qualified personnel.
Package Contents
Verify that all items are present in the package:
- Soundstream MR5.2000D Marine Amplifier
- Instruction Manual
- Quick Disconnect High Level Wire Harness
Setup and Installation
Proper installation is crucial for optimal performance and longevity of your amplifier. The MR5.2000D is designed for surface mounting.
1. Mounting Location
Choose a mounting location that is dry, well-ventilated, and protected from direct exposure to water. Ensure there is sufficient space around the amplifier for air circulation. The amplifier dimensions are approximately 16.5 x 9.75 x 3.75 inches.

Image: Size comparison of the MR5.2000D amplifier, illustrating its compact form factor.
2. Wiring Connections
Refer to the diagram below for terminal identification and connection points. All connections are conveniently located on one side of the amplifier for easier installation.

Image: Overview of the MR5.2000D amplifier's control and connection panel.
Power Connections
- GND (Ground): Connect to a clean, solid chassis ground point. Use 4-gauge wire.
- REM (Remote Turn-On): Connect to the remote output of your head unit.
- DC12V (Power): Connect directly to the positive terminal of the vehicle's battery. Use 4-gauge wire and install an appropriate fuse (not supplied) within 18 inches of the battery.
Input Connections
The amplifier supports both low-level RCA and high-level signal inputs.
- Low-Level Input (RCA): Connect RCA cables from your head unit's pre-amp outputs to the corresponding FRONT, REAR, and WOOFER LOW-INPUT terminals.
- High-Level Input: Use the supplied quick-disconnect high-level wire harness. Connect the speaker outputs from your head unit to the harness, then plug the harness into the HIGH-INPUT ports on the amplifier. The amplifier features an auto turn-on function for high-level inputs.
Speaker Output Connections
Connect your speakers to the SPEAKER OUT terminals. The amplifier supports 2-ohm stereo and 4-ohm bridged configurations for the full-range channels. Use 12-gauge speaker wire for optimal performance.
- FRONT/REAR: Connect your front and rear speakers to these terminals.
- WOOFER: Connect your subwoofer to these terminals.
- Bridged Mode: For higher power output to a single speaker (e.g., a subwoofer), connect to the designated bridged terminals for FRONT or REAR channels as indicated on the amplifier.
Fuses
The amplifier is equipped with internal fuses (30A x 2) for protection. Do not attempt to bypass or replace these with fuses of a different rating.
Operating the Amplifier
Once installed, configure the amplifier settings for optimal sound performance.
Control Panel Overview
The amplifier features various controls for fine-tuning your audio system:

Image: Detailed view of the MR5.2000D amplifier's control panel, showing adjustable settings.
- X-OVER (Crossover): Adjust the high-pass filter (HPF) and low-pass filter (LPF) for the FRONT and REAR channels. Use FLAT for full-range output.
- GAIN: Adjust the input sensitivity to match the output of your head unit. Start with the gain at minimum and slowly increase until desired volume is achieved without distortion.
- PHASE SHIFT (Woofer): Adjust the phase of the subwoofer output (0° or 180°) to optimize bass response with your main speakers.
- BASS BOOST (Woofer): Provides up to 12dB of bass enhancement at a specific frequency. Use sparingly to avoid distortion.
- SUBSONIC (Woofer): A high-pass filter for the subwoofer channel, removing ultra-low frequencies that can cause distortion and waste power.
Initial Power-Up
After all connections are made and verified, reconnect the vehicle's battery. Turn on your head unit. The amplifier should power on, indicated by an LED indicator (if present). If the amplifier does not power on or enters protection mode, refer to the Troubleshooting section.
Maintenance
The Soundstream MR5.2000D amplifier requires minimal maintenance to ensure long-term performance.
- Cleaning: Periodically wipe the amplifier's exterior with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Ventilation: Ensure that the heatsink fins are free from dust and debris to maintain proper cooling.
- Connections: Occasionally check all wiring connections for tightness and corrosion, especially in marine environments.
Troubleshooting
If you experience issues with your amplifier, consult the following table before contacting support.
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power / Amplifier does not turn on | Blown fuse; Loose power/ground/remote wire; Faulty remote turn-on signal. | Check amplifier fuses and external battery fuse. Verify all power, ground, and remote connections are secure and receiving proper voltage. |
| No Sound Output | Input signal issue; Speaker wires disconnected/shorted; Amplifier in protection mode. | Check RCA or high-level input connections. Verify speaker wiring for shorts or open circuits. Check if protection LED is illuminated. |
| Distorted Sound | Gain set too high; Improper crossover settings; Speaker impedance mismatch. | Reduce gain setting. Adjust crossover frequencies. Ensure speaker impedance matches amplifier's capabilities. |
| Amplifier Overheating / Protection Mode | Insufficient ventilation; Speaker impedance too low; Prolonged high-volume operation. | Ensure adequate airflow around the amplifier. Check speaker impedance. Reduce volume or allow amplifier to cool down. |
Specifications
Key technical specifications for the Soundstream MR5.2000D Rubicon Nano amplifier:
| Feature | Specification |
|---|---|
| Model | MR5.2000D |
| Number of Channels | 5 |
| Amplifier Class | Class D |
| Power Output | 2000W (Peak) |
| Input Sensitivity | 200mV-6V (Low Level RCA or High Level Signal) |
| Crossovers | Variable 12dB High Pass, Low Pass, & Subsonic |
| Bass Boost | 12dB |
| Power Terminals | 4-gauge |
| Speaker Terminals | 12-gauge |
| Mounting Type | Surface Mount |
| Item Dimensions (L x W x H) | 16.5 x 9.75 x 3.75 inches |
| Item Weight | 6 Pounds |
| UPC | 709483050792 |
Warranty Information
For specific warranty terms and conditions, please refer to the warranty card included with your product or contact Soundstream customer support directly. Warranty coverage typically includes defects in materials and workmanship for a specified period from the date of purchase. Keep your proof of purchase for warranty claims.
Support
If you require further assistance or have questions not covered in this manual, please contact Soundstream customer support. You can typically find contact information on the official Soundstream website or through your authorized dealer.
For additional resources and product information, visit the Soundstream Store on Amazon.