NUX B-3 Wireless Microphone System User Manual

1. Introduction

The NUX B-3 is a robust 2.4GHz wireless microphone system designed to convert your favorite wired microphone into a wireless one. This system consists of a transmitter and a receiver, both powered by rechargeable batteries. It connects quickly and easily to microphones and XLR input jacks, eliminating the need for cables and disposable batteries. The units are fully USB rechargeable and offer up to 5 hours of operation. A low-power sleep mode activates when the microphone is turned off and the B-3 is running, conserving battery life.

2. Product Overview

The NUX B-3 system provides reliable wireless audio transmission for various applications. It operates on the 2.4GHz frequency band, offering six selectable channels to minimize interference.

Image 1: The NUX B-3 wireless microphone system, showing both the transmitter (left) and receiver (right) units. Both units feature a black casing with a silver-colored XLR connector and a white LED indicator strip.

Key Features:

• 2.4GHz Digital Wireless Technology
• High-Quality Audio Transmission
• 6 Selectable Channels
• Rechargeable Lithium-Ion Batteries
• Up to 5 Hours of Battery Life
• Low-Power Sleep Mode
• XLR Connectivity
• Compact and Durable Design

Image 2: Rear view of the NUX B-3 units, clearly labeled as 'B-3 PLUS TRANSMITTER' and 'B-3 PLUS RECEIVER', indicating their respective functions.

3. Setup Instructions

3.1 Charging the Units

Before initial use, fully charge both the transmitter and receiver units. Use a standard USB cable (not explicitly listed as included, but implied by 'USB rechargeable') to connect each unit to a USB power source (e.g., computer, USB wall adapter). The battery indicator LEDs will show charging status.

3.2 Connecting the Transmitter

1. Connect the NUX B-3 transmitter directly to the XLR output of your microphone. Ensure a secure connection.
2. Important: The NUX B-3 does not provide phantom power. Do not use with microphones that require phantom power.

Image 3: A detailed view of the NUX B-3 transmitter unit, showing the XLR connector, power button, channel indicators, and a slide switch labeled "ON" and "MUTE".

3.3 Connecting the Receiver

1. Connect the NUX B-3 receiver to an XLR input on your mixer, audio interface, or powered speaker.
2. Ensure the connection is firm.

3.4 Powering On and Pairing

1. Press and hold the power button on both the transmitter and receiver units until the indicator lights illuminate.
2. The units will automatically attempt to pair. The channel indicator LEDs will flash during pairing and become solid when a connection is established.
3. If pairing does not occur automatically, briefly press the power button on both units to cycle through available channels until they connect. Both units must be on the same channel for operation.

Image 4: The NUX B-3 wireless system in use, with the transmitter connected to a microphone and the receiver mounted on a camera hot shoe, demonstrating a typical setup for video recording.

Image 5: The NUX B-3 wireless system configured for smartphone use, with the receiver connected to a smartphone via an adapter (not included) and the transmitter attached to a microphone, suitable for mobile content creation.

4. Operating Instructions

4.1 Channel Selection

The NUX B-3 offers 6 channels. To change the channel, briefly press the power button on either the transmitter or receiver. The corresponding channel LED will light up. Ensure both units are set to the same channel for proper operation.

Image 6: Close-up view of the NUX B-3 transmitter and receiver units, highlighting the channel indicator LEDs (numbered 1-6) and the power/pairing button. A blue LED strip is also visible, indicating power status.

4.2 Mute Function

The transmitter unit features a mute switch. Slide the switch to the "MUTE" position to temporarily silence the microphone output without powering down the unit. Slide it back to "ON" to resume audio transmission.

4.3 Battery Indicator

The units display battery level via indicator LEDs. Refer to the specific LED pattern for remaining battery life. When the battery is low, the indicator will typically flash or change color.

4.4 Powering Off

To power off, press and hold the power button on each unit until the indicator lights turn off.

5. Charging and Battery Management

The NUX B-3 system is equipped with internal rechargeable Lithium-Ion batteries. Each unit requires 2 Lithium Ion batteries (included and integrated).

• Charging: Use a standard USB power adapter (not included) and a USB cable to charge the units.
• Battery Life: A full charge provides up to 5 hours of continuous use.
• Low-Power Sleep Mode: When the connected microphone is turned off, the B-3 system automatically enters a low-power sleep mode to conserve battery.
• Charging Time: Allow sufficient time for a full charge before extended use.

6. Troubleshooting

6.1 No Sound Output

• Ensure both transmitter and receiver are powered on and fully charged.
• Verify that both units are paired and on the same channel.
• Check all XLR connections for security.
• Confirm the microphone is working and not muted.
• Ensure the receiver is connected to an active input on your mixer/speaker and its volume is up.
• Remember, the NUX B-3 does not provide phantom power.

6.2 Interference or Dropouts

• Try switching to a different channel on both the transmitter and receiver.
• Ensure there are no large metal objects or other 2.4GHz devices (Wi-Fi routers, other wireless systems) in close proximity that could cause interference.
• Maintain a clear line of sight between the transmitter and receiver if possible.
• Operating range is up to 30 meters (approximately 100 feet) in optimal conditions. Obstacles can reduce this range.

6.3 Units Not Powering On

• Ensure the units are fully charged. Connect them to a USB power source and check if the charging indicators light up.
• If units still do not power on after charging, contact NUX support.

7. Specifications

8. Safety Information

• Do not expose the units to water, moisture, or extreme temperatures.
• Avoid dropping or subjecting the units to severe impact.
• Do not attempt to open or modify the units. This will void the warranty and may cause damage.
• Use only the specified charging cable.
• Keep out of reach of children.

9. Warranty and Support

For warranty information and technical support, please visit the official NUX website or contact your local NUX distributor. Keep your proof of purchase for warranty claims.

You can also visit the NUX Store on Amazon for more product information.