BOSS Audio Systems R1100M
BOSS Audio Systems R1100M-P Monoblock Car Amplifier User Manual
Model: R1100M-P
1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your BOSS Audio Systems R1100M-P Monoblock Car Amplifier. Please read this manual thoroughly before attempting installation or operation to ensure proper use and to prevent damage.

Image 1.1: The BOSS Audio Systems R1100M-P Monoblock Car Amplifier, shown with its wired remote bass control.
2. Safety Precautions
- Always disconnect the vehicle's battery negative terminal before starting any electrical work.
- Ensure proper grounding of the amplifier to the vehicle chassis.
- Use appropriate gauge wiring for power and ground connections to prevent overheating and potential fire hazards.
- Install the amplifier in a location that allows for adequate ventilation and is protected from moisture and direct sunlight.
- Professional installation is recommended for optimal performance and safety.
3. Package Contents
Verify that all items are present in the package:
- BOSS Audio Systems R1100M-P Monoblock Amplifier
- Wired Remote Subwoofer Control
- High-Level Input Harness
- Mounting Screws
- Spare Fuse
- User Manual (this document)

Image 3.1: All components included with the R1100M-P amplifier.
4. Installation and Setup
4.1 Mounting the Amplifier
Choose a secure location for mounting the amplifier, such as in the trunk or under a seat. Ensure the location provides adequate air circulation to prevent overheating. Use the provided mounting screws to secure the amplifier firmly.

Image 4.1: Example of amplifier installation in a vehicle trunk.
4.2 Wiring Connections
Refer to the diagram below for proper wiring connections. Ensure all connections are secure and insulated.

Image 4.2: Connection diagram for the R1100M-P amplifier.
- Power Input (BATT+): Connect to the positive terminal of the vehicle's battery using an appropriate gauge power cable and an inline fuse (not supplied, recommended 40A).
- Ground (GND): Connect to a clean, unpainted metal surface of the vehicle chassis. Ensure a solid electrical connection.
- Remote Turn-On (REM): Connect to the remote output of your head unit. This wire turns the amplifier on and off with your car's audio system.
- Speaker Output: Connect your subwoofer(s) to the speaker terminals. Observe correct polarity. The amplifier is 2 Ohm stable.
- RCA Inputs (LOW LEVEL INPUTS): Connect to the RCA pre-out jacks of your head unit for optimal audio signal.
- High Level Inputs (SPEAKER LEVEL INPUTS): If your head unit does not have RCA outputs, use the supplied high-level input harness to connect directly to your vehicle's speaker wires.
- Remote Subwoofer Control Port: Connect the wired remote bass control to this port.
5. Operation and Controls
The R1100M-P amplifier features several controls to fine-tune your audio experience:
- Low Pass Filter (LPF): This control allows you to set the upper frequency limit for the amplifier's output. Adjust it to match the frequency response of your subwoofer, typically between 50Hz and 150Hz.
- Bass Boost: Provides an adjustable boost to low frequencies, enhancing bass impact. Use sparingly to avoid distortion.
- Input Sensitivity (GAIN): Adjust this control 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. This is not a volume control.
- Remote Subwoofer Control: The wired remote allows for convenient adjustment of the subwoofer output level from the driver's seat.
- Illuminated Logo: The BOSS logo illuminates when the amplifier is powered on, indicating operational status.
6. Maintenance
- Cleaning: Periodically clean the amplifier's exterior with a soft, dry cloth. Avoid using harsh chemicals or abrasives.
- Ventilation: Ensure that the amplifier's cooling fins are free from dust and obstructions to maintain proper heat dissipation.
- Connections: Occasionally check all wiring connections for tightness and corrosion. Loose connections can lead to performance issues or damage.
- Fuse Replacement: If the amplifier's fuse blows, replace it only with a fuse of the same type and rating (e.g., 40A ATC fuse). Using an incorrect fuse can cause severe damage or fire.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power / Amplifier Not Turning On |
|
|
| No Sound Output |
|
|
| Distorted Sound |
|
|
| Amplifier Overheating (Protection Light On) |
|
|
8. Specifications
| Feature | Detail |
|---|---|
| Model | R1100M-P |
| Amplifier Class | Class A/B, Monoblock |
| Maximum Power Output | 1100 Watts x 1 @ 2 Ohms |
| RMS Power Output (4 Ohms) | 550 Watts x 1 @ 4 Ohms |
| Impedance Stability | 2 Ohm Stable |
| Power Supply | MOSFET |
| Low Pass Filter (LPF) | Variable |
| Bass Boost | Switchable |
| Inputs | RCA (Low Level) & Speaker Level (High Level) |
| Protection Circuits | Thermal, Short, Overload |
| Dimensions (L x W x H) | 9.21" x 10.43" x 2.25" (234mm x 265mm x 57mm) |
| Weight | 4.37 lbs |
| Voltage | 12 Volts (DC) |
| Material | Metal and Plastic |

Image 8.1: Physical dimensions of the R1100M-P amplifier.
9. Warranty and Support
BOSS Audio Systems provides a 6-year Platinum Online Dealer Warranty for this product, provided the purchase is made through Amazon.com. To activate your warranty, it is recommended to register your product online after purchase.
For technical support or warranty claims, please contact BOSS Audio Systems customer service or refer to their official website for detailed support information.

Image 9.1: Warranty information and key features of the R1100M-P amplifier.
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.