1. Introduction
Thank you for purchasing the Bazooka RM-500BT Car Amplifier Bluetooth Speaker. This versatile audio system is designed to provide powerful and clear sound for various environments, including your car, motorcycle, or home. Featuring a 6-inch subwoofer, Bluetooth 5.0 connectivity, and multiple input options, the RM-500BT offers a rich audio experience. Please read this manual carefully before use to ensure proper operation and to maximize the product's lifespan.
2. Safety Information
To prevent fire, electric shock, or product damage, please observe the following safety precautions:
- Do not expose the device to rain or moisture. This product is not water resistant.
- Do not open the casing. There are no user-serviceable parts inside. Refer all servicing to qualified personnel.
- Ensure the power source matches the voltage requirements (12V DC or 240V AC). Incorrect voltage can damage the device.
- Avoid placing the speaker in direct sunlight or near heat sources.
- Keep the speaker away from strong magnetic fields.
- Do not block ventilation openings.
- Disconnect power during lightning storms or when unused for long periods.
Caution: Risk of Electric Shock. Do Not Open.
3. Package Contents
Please check that all items are present:
- Bazooka RM-500BT Car Amplifier Bluetooth Speaker (1 unit)
- Remote Control (1 unit)
- Power Cable (AC or DC, depending on variant/region)
- User Manual (This document)
4. Product Overview
The RM-500BT features a cylindrical design with a 6-inch subwoofer for powerful bass output. The control panel is located at one end of the tube, providing easy access to all functions.
4.1. Dimensions

Image: Bazooka RM-500BT speaker showing its dimensions: approximately 30 cm in length and 15 cm in diameter.
4.2. Control Panel and Ports

Image: Close-up of the RM-500BT's rear control panel, displaying various input ports and adjustment knobs.
- L-CH / R-CH (RCA Inputs): For connecting external audio sources via RCA cables.
- USB Port: For playing audio files from a USB flash drive.
- Micro TF / SD Card Slot: For playing audio files from a TF/SD memory card.
- DC12V Input: For 12V DC power connection (e.g., car battery).
- AC110-240V Input: For 110-240V AC power connection (e.g., home outlet).
- OFF/ON Switch: Power switch for the unit.
- VOL (Volume) Knob: Adjusts the overall volume level.
- TREBLE Knob: Adjusts the high-frequency sound level.
- BASS Knob: Adjusts the low-frequency sound level.
- Mode Button: Switches between input modes (Bluetooth, USB, TF, AUX).
- Play/Pause Button: Controls playback for USB/TF/Bluetooth.
- Previous/Next Track Buttons: Navigates tracks for USB/TF/Bluetooth.
5. Setup
5.1. Power Connection
- For AC Power (Home/Office): Connect the AC power cable to the AC110-240V input port on the speaker and then plug it into a standard wall outlet.
- For DC Power (Car/Motorcycle): Connect the DC power cable to the DC12V input port on the speaker. Connect the other end to a 12V DC power source, such as a car battery (ensure correct polarity: positive to positive, negative to negative).
- Once connected, switch the OFF/ON button to the 'ON' position.
5.2. Placement
Place the speaker on a stable, flat surface. Ensure there is adequate ventilation around the unit. Avoid placing it in enclosed spaces that could restrict airflow.
6. Operating Instructions
After powering on the device, use the 'Mode' button on the control panel or the remote control to select your desired input source.
6.1. Bluetooth Pairing
- Turn on the speaker and press the 'Mode' button until 'Bluetooth' mode is selected (an audible prompt or indicator light may confirm this).
- Enable Bluetooth on your mobile device (smartphone, tablet, etc.).
- Search for available Bluetooth devices. You should see "RM-500BT" in the list.
- Select "RM-500BT" to pair. Once paired, the speaker will indicate a successful connection.
- You can now play audio from your device through the speaker. The Bluetooth 5.0 technology allows for seamless connection up to 20 meters.
6.2. USB/TF Card Playback
- Insert a USB flash drive into the USB port or a TF/SD card into the Micro TF/SD card slot.
- The speaker should automatically switch to USB or TF card mode and begin playing audio files. If not, press the 'Mode' button to select the correct input.
- Use the Play/Pause and Previous/Next track buttons on the speaker or remote control to manage playback.
6.3. AUX Input
- Connect an external audio device (e.g., MP3 player, laptop) to the L-CH / R-CH (RCA) input ports using appropriate RCA cables.
- Press the 'Mode' button until 'AUX' mode is selected.
- Play audio from your connected device. Volume can be controlled via the speaker or the source device.
6.4. Remote Control Operation

Image: The RM-500BT speaker shown with its included remote control, highlighting convenient wireless operation.
The included remote control provides convenient access to all major functions from a distance:
- Power Button: Turns the unit on/off.
- Mode Button: Cycles through input sources (Bluetooth, USB, TF, AUX).
- Volume Up/Down: Adjusts the volume level.
- Play/Pause: Controls media playback.
- Previous/Next: Skips to the previous or next track.
- EQ: Cycles through equalizer presets (if available).
- Number Buttons: For direct track selection (if supported by media).
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the speaker. Do not use liquid cleaners or abrasive materials.
- Storage: When not in use, store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- Ventilation: Ensure the speaker's ventilation ports remain clear of dust and debris to prevent overheating.
8. Troubleshooting
| Problem | Possible Solution |
|---|---|
| No power |
|
| No sound |
|
| Bluetooth not connecting |
|
| USB/TF card not playing |
|
9. Specifications
| Model Name | RM-500BT |
| Brand | Generic |
| Speaker Type | Subwoofer / Car Amplifier Speaker |
| Speaker Size | 6 inches (Subwoofer), 5 inches (Internal Speaker) |
| Connectivity Technology | Bluetooth 5.0, USB, TF Card, AUX (RCA) |
| Wireless Range | Up to 20 meters |
| Power Source | Corded Electric (AC 110-240V, DC 12V) |
| Maximum Output Power | 5 Watts |
| Audio Output Mode | Stereo |
| Recommended Use | Music Players (Car, Home, Motorcycle) |
| Compatible Devices | Tablet, Laptop, Desktop, Home Theater, Smartphone |
| Material | Durable MDF enclosure, Metal components |
| Color | Black |
| Product Dimensions (D x W x H) | 15 cm x 30 cm x 15 cm |
| Item Weight | 1 Kilogram |
| Water Resistant | No |
10. Warranty and Support
This product is sold without an explicit warranty. For any issues or inquiries, please contact your retailer or the point of purchase for assistance.





