1. Introduction
The JOYROOM JR-CL17 is a versatile 48W Car Charger FM Transmitter designed to enhance your in-car audio and charging experience. Featuring Bluetooth 5.0, dual microphones for clear calls, and multiple music playback options, it provides a seamless connection for your devices. This manual will guide you through the setup, operation, and maintenance of your JR-CL17 FM Transmitter.
Figure 1: JOYROOM JR-CL17 Car Charger FM Transmitter
2. Specifications
| Feature | Detail |
|---|---|
| Certification | None |
| Origin | Mainland China |
| Item Type | FM Transmitters |
| Voltage | DC 12V-24V |
| Special Features | Wireless Car Adapter |
| Out Power | 48W (Max) |
| Model Name | JR-CL17 FM Transmitter |
| Item Size | 50 x 45 x 70mm / 2.0 x 1.8 x 2.8inch |
| Material Type | PC Fireproofing Material |
| Color Options | Black / Silver |
| Bluetooth Version | 5.0 |
| QC3.0 Output | 5V=3A, 9V=2A, 12V=1.5A |
| PD Output | 5V=3A, 9V=3A, 12V=2.5A, 15V=2A, 20V=1.5A (PPS: 3.3-11V 3A, 3.3V-16V 2A) |
| Total Power | 48W (Max) |
| Net Weight | 44g |
| Applicable Vehicle | Universal |
Figure 2: Product Dimensions
3. Package Contents
- 1 x JOYROOM JR-CL17 FM Transmitter
4. Product Overview
Figure 3: Functional Parameters
- Dual Microphones
- Working Status Indicator
- BASS Button
- AUX Port
- Light Button
- Multifunctional Button (Rotate for volume, press for calls/playback)
- Negative Power Contact
- Positive Power Contact
- LED Display (shows FM frequency)
- Type-C 30W Charging Port (PD)
- QC3.0 18W Charging Port
- USB Flash Drive Port
- Previous Track Button
- Next Track Button
5. Setup Instructions
- Insert into Car Socket: Plug the JR-CL17 FM Transmitter firmly into your car's 12V-24V cigarette lighter socket. The LED display will light up.
- Tune Car Radio: Turn on your car's FM radio and tune it to an unused station. An unused station is one with no music or vocals, only static or rustling. This is a key step to avoid static noise and ensure clear audio.
- Match FM Frequency: Adjust the FM frequency on the JR-CL17 transmitter to match the exact frequency of the unused station on your car radio. Use the multifunctional button to navigate and set the frequency.
- Bluetooth Pairing: On your mobile device, enable Bluetooth and search for available devices. Select 'JR-CL17' (or similar name) from the list to pair. Once paired, the working status indicator will confirm the connection.
Figure 4: Tuning to an Unused FM Station
6. Operating Instructions
6.1 Music Playback
The JR-CL17 supports three music playing modes:
- Bluetooth 5.0: After successful pairing, music from your mobile device will stream wirelessly to your car's stereo.
- USB Flash Drive: Insert a USB flash drive (up to 64GB) into the USB flash drive port (12). The device will automatically detect and play MP3/WMA/WAV/FLAC files.
- AUX Cable: Connect your audio device to the AUX port (4) using a 3.5mm audio cable.
Figure 5: Music Playing Modes
Music Controls:
- Play/Pause: Short press the Multifunctional Button (6).
- Next Track: Press the Next Track Button (14).
- Previous Track: Press the Previous Track Button (13).
- Volume Adjustment: Rotate the Multifunctional Button (6) clockwise to increase volume, counter-clockwise to decrease.
- BASS Boost: Press the BASS Button (3) to activate or deactivate the deep bass effect for enhanced audio.
Figure 6: Call Control Functions
6.2 Hands-Free Calling
The JR-CL17 features enhanced dual microphones and CVC Noise Cancellation technology for clearer calls.
Call Controls:
- Answer Call: Short press the Multifunctional Button (6).
- Hang Up Call: Short press the Multifunctional Button (6) during a call.
- Reject Call: Long press the Multifunctional Button (6).
- Adjust Volume: Rotate the Multifunctional Button (6) during a call.
Figure 7: Enhanced Dual Microphones
6.3 Device Charging
The JR-CL17 provides fast charging capabilities with a total output of 48W (Max).
- Type-C 30W Charging Port (PD): Use this port (10) for Power Delivery compatible devices.
- QC3.0 18W Charging Port: Use this port (11) for Quick Charge 3.0 compatible devices.
Figure 8: 48W Fast Charging
6.4 Light Control
The Light Button (5) allows you to control the ambient lighting of the device. Press it to cycle through different light modes or turn the lights off.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use liquid cleaners or aerosols.
- Storage: Store the device in a cool, dry place when not in use.
- Avoid Damage: Do not expose the device to extreme temperatures, direct sunlight, or moisture. Avoid dropping or subjecting it to strong impacts.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Static noise during playback | FM frequency interference | Ensure your car radio and the transmitter are tuned to an unused FM station (one with only static). Try different unused frequencies. |
| Device not powering on | Loose connection or car socket issue | Check if the transmitter is firmly inserted into the cigarette lighter socket. Test the car socket with another device. |
| Bluetooth not connecting | Device not in pairing mode or interference | Ensure Bluetooth is enabled on your phone and the transmitter is discoverable. Restart both devices and try pairing again. |
| Poor audio quality (low volume, distortion) | Incorrect volume levels or frequency issues | Adjust volume on both the transmitter and your car radio. Try a different FM frequency. Ensure the audio source (phone, USB) is playing clearly. |
| Fast charging not working | Cable incompatibility or device not supporting fast charge | Ensure you are using a fast-charging compatible cable. Verify your device supports PD or QC3.0 protocols. |
9. User Tips
- Optimal FM Frequency: Always take a moment to find the clearest, most static-free FM frequency in your area for the best audio experience. This can vary by location.
- Maximize Charging Speed: For the fastest charging, use high-quality cables that support Power Delivery (PD) for the Type-C port and Quick Charge 3.0 (QC3.0) for the USB-A port.
- Clear Calls: Position the transmitter where the dual microphones have a clear path to your voice for the best call clarity, especially with the CVC Noise Cancellation feature.
- Bass Boost: Experiment with the BASS button to find your preferred audio profile for different music genres.
10. Warranty and Support
For any questions, technical support, or warranty inquiries regarding your JOYROOM JR-CL17 FM Transmitter, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
