1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your PROZOR Bluetooth 5.0 Power Amplifier, Model PRR045us. This amplifier is designed to power passive speakers in both outdoor and indoor environments, offering robust audio performance and Bluetooth connectivity. Please read this manual thoroughly before use to ensure proper setup and safe operation.
2. Package Contents
Verify that all items listed below are included in your package:
- Bluetooth Power Amplifier x 1
- Waterproof Plastic Box x 1
- AC Power Cord (5ft/1.5m) x 1
- User's Manual x 1

3. Product Features
- Bluetooth 5.0 Connectivity: Advanced Bluetooth 5.0 technology for wireless audio streaming from smartphones or tablets, with a maximum range of up to 50 feet (15 meters).
- High Power Output: Supports a peak power output of 200W + 200W, suitable for 4-8 ohm speakers. Delivers up to 200W per channel with 4-ohm speakers and up to 100W per channel with 8-ohm speakers.
- Waterproof Mounting Enclosure: Includes a durable plastic box designed to protect the amplifier from dust and rain, enabling outdoor installation.
- Versatile Installation: Wall-mountable design for secure attachment near speakers in various environments such as gardens, patios, poolside areas, garages, porches, and workshops.
- TPA3221 Chip: Utilizes the TPA3221 audio amplifier chip for efficient and clear sound reproduction.

4. Specifications
| Feature | Detail |
|---|---|
| Model Number | PRR045us |
| Bluetooth Version | 5.0 |
| Peak Power Output | 200W + 200W |
| Power Supply | 30V 5A (AC Power Cord included) |
| Speaker Impedance | 4-8 Ohms |
| Bluetooth Range | Up to 50 feet (15 meters) |
| Mounting Type | Enclosure Mount (Wall-mountable) |
| Dimensions (Amplifier in Box) | Approximately 11.26 x 8.9 x 4.25 inches (28.6 x 22.6 x 10.8 cm) |
| Weight | Approximately 3.51 Pounds (1.59 kg) |

5. Setup and Installation
The PROZOR Bluetooth Power Amplifier is designed for easy installation, particularly in outdoor settings, thanks to its protective enclosure.
5.1 Mounting the Waterproof Box
- Choose a Location: Select a suitable location for mounting the waterproof box. For best durability and protection, install the box in a sheltered area, such as under an eave or porch roof. Avoid direct exposure to heavy rain or prolonged sunlight.
- Orient the Box: Ensure the box is oriented so that the power and audio input/output connections on the amplifier face downwards. This prevents rain and dust from entering the interior through the cable holes.
- Secure the Box: Use appropriate mounting hardware (not included, typically screws) to securely attach the waterproof box to a wall or sturdy surface. The box features pre-drilled mounting points.


5.2 Connecting Speakers and Power
- Speaker Connection: Connect your passive speakers to the amplifier's speaker output terminals. Ensure correct polarity (+ to + and - to -) for optimal sound. This amplifier is designed for passive audio only, not for active (powered) speakers.
- Power Connection: Connect the provided AC power cord to the amplifier and then to a suitable power outlet.
- Cable Management: Route all cables through the designated openings at the bottom of the waterproof box to maintain its protective integrity.

Note: For optimal performance, use speakers with an impedance of 4-8 ohms. The best performance is achieved with speakers having a power rating of 220W for 4 ohms, 160W for 6 ohms, or 120W for 8 ohms.
6. Operation
6.1 Powering On/Off
Locate the power switch on the front panel of the amplifier. Flip the switch to the "ON" position to power on the device. Flip it to "OFF" to power off.
6.2 Bluetooth Pairing
- Activate Bluetooth: Ensure the amplifier is powered on. The Bluetooth indicator light (if present) will typically flash, indicating it's in pairing mode.
- Enable Bluetooth on Device: On your smartphone, tablet, or other Bluetooth-enabled audio source, go to the Bluetooth settings.
- Select Amplifier: Search for available devices. The amplifier should appear as "PROZOR RX5.0" (or similar). Select it to initiate pairing.
- Confirm Connection: Once paired, the Bluetooth indicator light on the amplifier will typically become solid, and your device will show it is connected.

Tip: For optimal Bluetooth range, ensure there are no significant obstructions between your audio source device and the amplifier. The maximum range is approximately 50 feet (15 meters).
6.3 Volume Control
Adjust the master volume using the large rotary knob on the front panel of the amplifier. You can also control the volume from your connected Bluetooth device.
7. Maintenance
- Cleaning: Periodically clean the exterior of the waterproof box with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Inspection: Regularly inspect the waterproof box for any signs of damage, cracks, or loose seals that could compromise its weather resistance. Ensure all cable entries are properly sealed.
- Cable Integrity: Check power and speaker cables for wear or damage. Replace any damaged cables immediately.
- Environmental Protection: While the enclosure is waterproof, installing it in a sheltered location (e.g., under an eave) will significantly extend its lifespan and protect the internal components from extreme weather conditions.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected; Power outlet not active; Amplifier switch off. | Ensure power cord is securely connected. Test power outlet. Turn amplifier switch to "ON". |
| No sound | Speakers not connected correctly; Volume too low; Bluetooth not paired; Audio source issue. | Check speaker connections and polarity. Increase amplifier and source device volume. Re-pair Bluetooth. Verify audio source is playing. |
| Bluetooth connection unstable or short range | Obstructions between devices; Interference; Device too far. | Reduce distance between amplifier and source device. Remove obstructions. Avoid other wireless devices causing interference. |
| Distorted sound | Volume too high; Speaker impedance mismatch; Damaged speakers/cables. | Lower volume. Ensure speakers are 4-8 ohms. Inspect speakers and cables for damage. |
9. Safety Information
- Do not open the amplifier casing. There are no user-serviceable parts inside.
- Ensure the amplifier is disconnected from the power source before performing any maintenance or connections.
- Avoid exposing the amplifier or its enclosure to extreme temperatures, direct flame, or corrosive liquids.
- Only use the provided power adapter or one with identical specifications.
- Keep out of reach of children.
10. Warranty and Support
PROZOR products come with a standard manufacturer's warranty. For specific warranty details, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official PROZOR website. You may also contact your retailer for assistance.
For further information, visit the PROZOR Store on Amazon.





