1. Introduction
This manual provides detailed instructions for the safe and efficient operation of your Trevi RR 501 BT Bluetooth Portable Stereo Boombox. Please read this manual thoroughly before using the device and retain it for future reference.
The Trevi RR 501 BT is a versatile audio system featuring Bluetooth connectivity, USB and SD card playback for MP3 files, a multi-band radio, and a cassette player/recorder. Its portable design allows for enjoyment of music anywhere.
2. Safety Information
- Power Source: Use only the specified power adapter or batteries. Ensure the voltage matches the device requirements.
- Water and Moisture: Do not expose the unit to rain, moisture, or immerse it in water. Avoid placing objects filled with liquids, such as vases, on the unit.
- Ventilation: Ensure adequate ventilation. Do not block ventilation openings.
- Heat: Keep the unit away from heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Cleaning: Unplug the unit from the power outlet before cleaning. Use a soft, dry cloth. Do not use liquid cleaners or aerosol cleaners.
- Servicing: Do not attempt to service this product yourself. Refer all servicing to qualified service personnel.
- Batteries: If using batteries, ensure correct polarity. Remove batteries if the unit will not be used for an extended period.
3. Product Overview
Familiarize yourself with the various components and controls of your Trevi RR 501 BT boombox.
Figure 1: Front view of the Trevi RR 501 BT boombox, showing the two speakers, control panel with buttons and knobs, cassette deck, and telescopic antenna.
Key Components:
- Telescopic Antenna: For improved radio reception.
- Control Knobs: For volume, tuning, and other adjustments.
- Function Buttons: Play, Stop, Fast Forward, Rewind, Record (for cassette), Mode selection.
- Cassette Deck: For playing and recording audio cassettes. Features "AUTO STOP".
- Speakers: Two integrated stereo speakers.
- USB Port: For playing MP3 files from USB flash drives.
- SD Card Slot: For playing MP3 files from SD memory cards.
- Radio Tuner Display: Shows selected radio frequency and band (FM, SW2, SW, MW).
4. Setup
4.1 Power Connection
- AC Power: Connect the AC power cord to the AC inlet on the back of the unit, then plug the other end into a standard wall outlet.
- Battery Power (Optional): For portable use, open the battery compartment (usually on the bottom or back) and insert the required batteries (e.g., D-size batteries, though the product spec mentions 1 AAAA battery, which is unusual for main power. Please refer to the unit's battery compartment markings for correct battery type and quantity). Ensure correct polarity (+/-).
4.2 Initial Setup
- Extend the telescopic antenna for optimal radio reception.
- Turn the unit on using the Power button or switch.
- Adjust the volume to a low level before playing any audio.
5. Operating Instructions
5.1 Radio Operation
- Press the "Mode" button or slide the function switch to select "Radio" mode.
- Select the desired radio band (FM, SW2, SW, MW) using the band selector switch.
- Rotate the "Tuning" knob to search for radio stations. The frequency will be displayed on the tuner scale.
- Adjust the telescopic antenna and unit position for best reception.
5.2 Bluetooth Pairing
- Press the "Mode" button or slide the function switch to select "Bluetooth" mode. The unit will enter pairing mode, indicated by a flashing LED or an audible prompt.
- On your Bluetooth-enabled device (e.g., smartphone, tablet), enable Bluetooth and search for available devices.
- Select "Trevi RR 501 BT" (or similar name) from the list of found devices.
- Once paired, the unit will confirm with an audible sound or a solid LED indicator. You can now play audio from your device through the boombox.
5.3 USB/SD MP3 Playback
- Insert a USB flash drive into the USB port or an SD card into the SD card slot. Ensure the card is inserted correctly.
- Press the "Mode" button or slide the function switch to select "USB/SD" mode. The unit should automatically begin playing MP3 files.
- Use the Play/Pause, Next Track, and Previous Track buttons to control playback.
5.4 Cassette Player/Recorder
- Playing a Cassette: Open the cassette compartment door, insert a cassette tape, and close the door. Press the "Play" button.
- Use the Fast Forward (FF) and Rewind (REW) buttons to navigate the tape. Press "Stop" to halt playback. The "AUTO STOP" feature will automatically stop the tape at the end.
- Recording: Insert a blank cassette tape. Select the desired audio source (e.g., Radio, Bluetooth, USB/SD, or external input if available). Press the "Record" button (usually simultaneously with "Play") to begin recording. Press "Stop" to end recording.
6. Maintenance
- Cleaning the Unit: Wipe the exterior of the unit with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Cleaning the Cassette Deck: Periodically clean the tape heads, pinch roller, and capstan with a cotton swab lightly dampened with isopropyl alcohol. This helps maintain sound quality and prevent tape damage.
- Storage: When not in use for extended periods, store the unit in a cool, dry place. Remove batteries if applicable.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected; Batteries depleted or incorrectly inserted. | Check AC power connection; Replace batteries or ensure correct polarity. |
| No sound | Volume too low; Incorrect mode selected; Headphones connected. | Increase volume; Select correct source mode (Radio, Bluetooth, USB/SD, Cassette); Disconnect headphones. |
| Poor radio reception | Antenna not extended; Weak signal; Interference. | Fully extend and adjust the telescopic antenna; Reposition the unit; Move away from electronic devices causing interference. |
| Bluetooth not pairing | Unit not in pairing mode; Device too far; Bluetooth disabled on source device. | Ensure boombox is in Bluetooth pairing mode; Move source device closer; Enable Bluetooth on your device and rescan. |
| Cassette tape not playing | Tape incorrectly inserted; Tape damaged; Play button not fully pressed. | Reinsert tape correctly; Try a different tape; Ensure Play button is engaged. |
8. Specifications
- Brand: Trevi
- Model: RR 501 BT (0RR50104)
- Color: Blue
- Connectivity: Bluetooth, USB, SD Card
- Audio Formats: MP3 (via USB/SD), Cassette
- Radio Bands: FM, SW2, SW, MW (4-band radio)
- Speaker Type: Stereo
- Power Output: 10 Watts
- Power Source: AC Power Cable, Battery (type and quantity to be confirmed by unit markings, 1 AAAA battery mentioned in specs is unusual for main power)
- Dimensions (L x W x H): 50 x 50 x 28 centimeters
- Weight: 1.25 Kilograms
9. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact Trevi customer service. Keep your proof of purchase for warranty claims.
For further assistance, visit the official Trevi website or contact your local distributor.





