NUX B-3RC 2.4GHz Wireless Microphone System

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Made in China

Certifications: FC, CE, UK CA, ROHS

WARNING

To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture.

CAUTION

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

NOTE: This device and its antenna(s) must not be co-located or operation in conjunction with any other antenna or transmitter.

⚡ The lightning symbol within a triangle means, "Electrical caution!" It indicates the presence of information about operating voltage and potential risks of electrical shock.

⚠️ The exclamation point within a triangle means, "Caution!" Please read the information next to all caution signs.

System Overview

The NUX B-3RC is a new generation of 2.4GHz wireless microphone system, designed for those who want to get rid of the cables and enjoy the wireless world without a complicated setup. An extra dynamic microphone is packed into the box of the bundle set.

If the environment is full of RF transmitters, sometimes B-3RC will meet interference, please keep B-3RC at least 3 meters from the Wi-Fi router.

NUX B-3RC offers various of 2.4GHz wireless systems, the units will automatically choose a channel from all 6 channels.

Please avoid using other wireless systems together with NUX ones, or there may be noise or interference issues.

Features

• Easy to use 2.4GHz wireless microphone system
• 24bit Hi-Resolution audio quality
• Ultra-low latency <4.8ms
• Auto pairing and auto channel selection
• Long-lasting built-in lithium battery (3.5 hours working time)

Component Identification

Transmitter

Diagram Description: The transmitter is a black cylindrical device with a female XLR connector at one end. It features a power/mute button and an indicator light. Magnetic charging contacts are on the bottom.

• 1. Female Port (XLR connector)
• 2. Battery/Mute Indicator
• 3. Power/Mute Button
• 4. Magnetic charging contacts

Receiver

Diagram Description: The receiver is a black cylindrical device similar to the transmitter, with a male XLR connector at one end. It features a power button and an indicator light. Magnetic charging contacts are on the bottom.

• 1. Male Port (XLR connector)
• 2. Power/Mute Indicator
• 3. Power Button
• 4. Magnetic charging contacts

NDM-4 Dynamic Microphone

Diagram Description: A standard dynamic microphone with a black finish. It has a grille at the top, a power switch on the body, and a transmitter port at the base.

• 1. Mic
• 2. Switch
• 3. Transmitter Port (for connecting to the NUX B-3RC Transmitter)

How to Operate

Transmitter and Receiver Pairing

The B-3RC has auto pairing and channel group selection. Please follow the steps:

1. Turn on the Transmitter and Receiver units.
2. The Transmitter and Receiver will get paired automatically. The device will detect the current RF environment and choose the suitable Channel Group to operate while turning on.
3. Connect the Transmitter to your dynamic microphone, and connect the Receiver to your mixer or amplifier.

Diagram Description: Shows the transmitter connected to a microphone (NDM-4) and the receiver connected to a mixer/amplifier via XLR. The connection is indicated by a wireless signal icon.

Operation Indicators

Working Status: While you turn on the device, the power indicator(s) will show you the current battery status. The power indicator will show "GREEN" while working. If the Receiver does not get the signal, the power indicator will show "RED".

Mute Mode

While working, if you press the Transmitter's power switch button, the device will enter MUTE mode. The Transmitter and the Receiver's power indicators will show "RED".

Battery Status

When turning on the units, the power indicator shows the battery status:

• GREEN: Battery level (100% > Battery ≥ 75%)
• YELLOW: Battery level (75% > Battery ≥ 50%)
• RED: Battery level (50% > Battery > 25%)

Diagram Description: Shows the transmitter and receiver units with their indicator lights displaying GREEN, YELLOW, and RED colors corresponding to battery levels.

Charge

Rechargeable Storage Case

Charging the storage case: Connect the USB-C cable to the storage case's USB port. Use a 5V, 2A or higher adaptor to charge. It will take around 4 hours to fully charge the storage case.

Diagram Description: Shows the storage case with a USB-C cable connected to its port.

Using storage case to charge the TX & RX

While the TX & RX are in the storage case, press the storage case's power button. The storage case will start to charge both units. While charging, both units will show RED. The storage case LED indicator will turn off after 5 seconds.

Diagram Description: Shows the transmitter and receiver units placed inside the storage case, with the case's power button being pressed.

Storage Case LED Indicator

The storage case LED indicator shows the battery status of the case and the charging status of the units:

Auto-Off Function

The B-3RC has a built-in auto power off feature. The transmitter or receiver will automatically shut down after 10 minutes if there is no wireless connection.

Diagram Description: Shows the transmitter and receiver units. A finger is pressing the power switch button on the transmitter to wake it up.

Application Scenarios

Wireless Recording

Diagram Description: Illustrates wireless recording. A person is holding an NDM-4 microphone transmitter connected to the NUX B-3RC transmitter. The receiver is connected to a camera via an XLR cable, with a wireless signal icon indicating the connection.

Conventional Use 1

Diagram Description: Shows a typical setup. A microphone is connected to the NUX B-3RC transmitter. The receiver is connected to a mixer or audio interface, which is then connected to an amplifier.

Conventional Use 2

Diagram Description: Depicts two scenarios. In the first, a NUX B-3RC transmitter is connected to a microphone, and the NUX B-3RC receiver is connected to an amplifier. In the second, a B-2 PLUS transmitter is shown connected to a microphone, and a B-2 PLUS receiver is connected to an amplifier, suggesting compatibility or comparison.

Specifications

• 2.4GHz operating frequency
• 24 bit sampling accuracy
• Latency: <4.8ms
• Transmission Range: Up to 100 feet line-of-sight
• THD + Noise: < 0.1% @ 1kHz
• Built-in Battery Capacity (TX & RX): 330mAh/3.7V
• TX/RX Battery Running Time: 3.5 hours
• TX/RX Battery Charging Time: around 2.5 hours
• Storage Box Battery Capacity: 3000mAh/3.7V
• Storage Box Battery Charging Time: around 4 hours
• Dimensions:
  • Transmitter: 80mm(L) x 24mm(W) x 24mm(H)
  • Receiver: 80mm(L) x 24mm(W) x 24mm(H)
• Weight:
  • Transmitter: 36g
  • Receiver: 36g

*Specifications and appearance subject to change without notice.