Product Overview
This document is the user manual for the Joyroom JR-CB8 Wireless Receiver. It provides detailed instructions on setup, operation, features, and safety precautions.
Product Information
Series Name: Car-B Series
Product Name: Wireless Receiver
Model: JR-CB8
BT Version: V5.4
Audio Decoding: SBC
Supported Protocols: HFP, A2DP, AVRCP
Music Mode: BASS, vocal
Working Frequency: 2402MHz-2480MHz
Max Output Power: 1dBm (EIRP)
BT Range: 10m (barrier-free open environment)
Frequency Response Range: 20Hz-20KHz
Microphone Sensitivity: -38dB±2
Music Time: Approx. 16 hours (at 70% volume)
Talk Time: Approx. 18 hours (at 70% volume)
Standby Time (connected): Approx. 120 hours
Battery Capacity: 250mAh
Charging Time: Approx. 2 hours
Charging Port: TYPE-C
Power Input: 5V 1A
Material: ABS+PC
Dimensions: 48.6*38.5*13.5mm
Net Weight: 17g
Packing List
- Wireless Receiver / BT-Empfänger / Récepteur sans fil / Ricevitore wireless / Receptor inalámbrico
- 3.5mm audio cable / 3,5mm-Audiokabel / Câble audio 3,5 mm / Cavo audio da 3,5mm / Cable de audio de 3,5 mm
- 3.5mm audio adapter / 3,5mm-Audioadapter / Adaptateur audio 3,5 mm / Adattatore audio da 3,5 mm / Adaptador de audio de 3,5 mm
- 3M adhesive *2 / 3M Kleber x2 / Adhésif 3M *2 / Adesivo 3M x2 / Adhesivo 3M *2
- Type-C charging cable / Typ-C-Ladekabel / Câble de charge Type-C / Porta di caricamento di tipo C / Cable de carga Tipo C
- User Manual & Warranty Card / Bedienungsanleitung und Garantiekarte / Manuel de l'utilisateur et carte de garantie / Manuale dell'utente e certificato di garanzia / Manual del usuario y tarjeta de garantía
I. Product Diagram
Description: Visual representation of the JR-CB8 Wireless Receiver.
- Volume Up Button: Press to increase volume.
- 3.5mm Audio Port: For connecting audio devices via a 3.5mm cable.
- Previous Track Button: Press to go to the previous track.
- Volume Down Button: Press to decrease volume.
- Dual-mic ENC: Indicates the presence of dual microphones for noise cancellation.
- Power Button: Press and hold to turn the device on/off.
- BASS Switch: Slide to toggle BASS mode on/off.
- Next Track Button: Press to go to the next track.
- Type-C Charging Port: For charging the device.
II. Pairing Operation
1. Turn On
Press and hold the Power button for 2 seconds to turn the device on manually.
2. Connected
When the ice blue indicator lights of the 4 buttons breathe simultaneously, the wireless receiver is ready for pairing.
Activate your phone's Bluetooth function, search for the BT device "JR-CB8", and connect to it.
3. Turn Off
Press and hold the Power button for 3 seconds to turn the device off manually.
The wireless receiver will automatically turn off if not connected for 10 minutes.
III. Operation Instructions
Music Function
- Play/Pause: In music status, click the Play/Pause button (x1) to play or pause music.
- Previous Track: In music status, click the Previous Track button (x1) to go to the previous track.
- Next Track: In music status, click the Next Track button (x1) to go to the next track.
- Volume Up: In music or calling status, click the Volume Up button (x1) to increase volume.
- Volume Down: In music or calling status, click the Volume Down button (x1) to decrease volume.
Call Function
- Answer/End Call: When a call comes in, click the Power button (x1) to answer or end the call.
- Reject Call: When a call comes in, press and hold the Power button for 1 second to reject the call.
BASS Mode
- Turn On/Off BASS: In music status, slide the BASS switch to the ON position to turn on bass, or slide it to the OFF position to turn off bass.
Light Function
- Turn On/Off Light: In the turned-on status, press and hold the Volume Down button for 3 seconds to turn the light on or off.
Dual Connection
After device 1 is successfully connected to the wireless receiver, turn off the device's Bluetooth function manually and then connect device 2. Once device 2 is successfully connected, turn on device 1's Bluetooth function and connect it manually to the wireless receiver to achieve dual device connection.
Factory Reset
In the turned-on status, press and hold both the Volume Up and Volume Down buttons simultaneously for 2 seconds to perform a factory reset.
IV. Indicator Light
- Turn On: The ice blue indicator lights of the 4 buttons stay on for 1 second.
- Turn Off: The ice blue indicator lights of the 4 buttons turn off simultaneously.
- Ready for Pairing: The ice blue indicator lights of the 4 buttons breathe simultaneously.
- Charging: During charging, the ice blue indicator lights of the 4 buttons breathe slowly simultaneously. When fully charged, the indicators turn off.
V. FAQ (Frequently Asked Questions)
Q: Why can't the product be turned on?
A: Check if the product has power. If not, charge it for more than half an hour before turning it on. Ensure you have pressed the correct button and held it for 2 seconds.
Q: Why can't the product be connected?
A: The product might be connected to another device. Disconnect it from the previous device and try reconnecting. For iPhones, Bluetooth may not refresh automatically; manually select "JR-CB8" in the Bluetooth interface. If issues persist, try a factory reset.
Q: Why is the product's sound too low?
A: For Android users, ensure the media and call audio channel is enabled in Bluetooth settings. For iPhone users, check for any volume limits in phone settings. Due to different phone operating systems, the receiver's volume might not sync perfectly with the phone/car audio; manually adjust the volume on your phone, receiver, and car audio.
Q: Why can't the product be charged?
A: Ensure the charging port and cable are properly connected. Try unplugging and replugging the cable. Use Qi-certified chargers with the included cable. Avoid unqualified chargers that may cause damage.
VI. Safety Criteria
- Do not disassemble or modify the product; this may cause breakdown or fire.
- Do not immerse the product in liquid or wash it with water.
- Use adapters conforming to national/regional safety standards with the included charging cable to prevent battery damage or safety issues.
- Use and store the product at normal temperatures (0°C to 45°C).
- Avoid using at high volume levels or for extended periods to prevent dizziness or hearing damage.
- Do not use during thunderstorms, as this may lead to abnormal performance or signal interruption.
Declaration of Conformity: This product model complies with Directive 2014/53/EU and Directive 2011/65/EU. The full EC Declaration of Conformity is available at: https://www.joyroom.com
This equipment complies with Directives 2012/19/EU and 2006/66/EU. Do not dispose of this equipment with ordinary trash; it must be recycled. This symbol indicates that the product should be delivered to a recycling center for electronic and electrical equipment.
WARNING
Before installation or operation, refer to the electrical and safety information. Improper disposal of batteries (e.g., in fire, hot oven, crushing) can cause explosions. Exposure to extremely low air pressure may also cause explosions or leaks. Follow these safety instructions to prevent fire, electric shock, damage, or injuries.
