DGNOG R4-PROS 4 Channel Karaoke Mixer User Manual

1. Product Overview

The DGNOG R4-PROS is a versatile 4-channel audio mixer designed for various applications including home karaoke, DJ mixing, podcasting, and live streaming. It integrates a sound board, Bluetooth music streaming, a USB audio interface, and comes with two wireless microphones.

Key features include:

• 4-Channel Audio Mixer: Provides comprehensive control over multiple audio inputs.
• Dual Wireless Microphones: Includes two UHF wireless microphones for clear vocal transmission.
• Independent Microphone Volume Control: Allows separate volume adjustment for each wireless microphone.
• 24 DSP Reverb Effects: Enhance vocals and audio with a variety of built-in digital sound effects.
• Wide Compatibility: Supports XLR, 1/4" TRS, RCA, and 3.5mm inputs/outputs for various devices.
• USB Audio Interface: Enables direct connection to a computer for recording and streaming.
• Bluetooth Connectivity: For wireless audio streaming from compatible devices.

Image: The DGNOG R4-PROS 4-channel mixer with two wireless microphones, illustrating its primary function as an audio mixer and karaoke system.

2. Setup Guide

2.1 Unpacking and Contents

Carefully unpack all components and verify that all items are present. The package should contain:

• DGNOG R4-PROS Audio Mixer x1
• Wireless Microphone x2
• User Manual x1
• Power Supply x1
• USB A to USB C Cable x1
• USB to USB Cable x1
• Anti Slip Ring x2 (for microphones)

Image: A visual representation of the DGNOG R4-PROS mixer and its included accessories, such as microphones, cables, and power adapter.

2.2 Power Connection

1. Connect the provided power supply to the 9V/3A DC power input on the rear of the mixer.
2. Plug the power supply into a standard electrical outlet.
3. Press the Power Switch on the rear panel to turn on the mixer.

2.3 Wireless Microphone Setup

1. Unscrew the bottom cap of each wireless microphone and insert two AA batteries (not included), ensuring correct polarity.
2. Power on the microphones using their respective power buttons. The display on the microphone will illuminate.
3. The microphones are pre-paired with the mixer. If re-pairing is needed, refer to the microphone's individual instructions or the mixer's display for frequency adjustment. Each microphone has 16 adjustable frequency points (CHA: 576.1-591.1MHz, CHB: 560.1-575.1MHz).

Image: Close-up of the two wireless microphones showing their digital displays and the 16 adjustable frequency points for each microphone.

2.4 Audio Output Connections

The R4-PROS mixer offers multiple ways to connect to speakers or other audio output devices.

2.4.1 Method One: Speaker Output (RCA or 1/4")

Connect the mixer's Main Output (RCA or 1/4" jacks) to the input of your powered speakers or karaoke machine. Ensure the speaker connector is not optical or coaxial unless a digital to analog audio converter is used.

Image: Diagram showing how to connect the mixer's RCA or 1/4" outputs to a karaoke machine or powered speakers for direct audio playback.

2.4.2 Method Two: Digital Audio Output (via Converter)

To connect to a TV or home theater system with optical or SPDIF digital audio input, you will need an external Digital to Analog Audio Converter (not included). Connect the mixer's RCA or 1/4" outputs to the converter, then connect the converter's digital output to your TV/home theater system.

Image: Diagram illustrating the connection of the mixer to a TV or home theater system using an external Digital to Analog Audio Converter for digital audio output.

2.5 Computer Connection (USB Audio Interface)

Connect the mixer to your computer using the provided USB cable. The mixer will function as a USB audio device, allowing you to record audio or use it for live streaming.

1. Connect the USB cable from the mixer's USB port to your computer's USB port.
2. On your computer, navigate to sound settings and select the mixer (e.g., "JieLi-BR21 spker") as the input device.
3. Test the microphone or audio input to ensure signal detection.
4. Open your preferred recording or streaming software and begin recording.

Image: The DGNOG R4-PROS mixer connected to a laptop via USB, demonstrating its use as an audio interface for recording or streaming.

3. Operating Instructions

3.1 Panel Introduction

Familiarize yourself with the various controls and inputs on the mixer's panel.

Image: An annotated diagram of the DGNOG R4-PROS mixer's front and side panels, highlighting key inputs, outputs, and control knobs.

3.2 Microphone Operation

The wireless microphones are controlled via the mixer. The gain, EQ effects, and overall volume for the microphones are managed through Channel 2 on the mixer.

• Individual Volume Adjustment: Use the dedicated volume knobs for Mic CHA and Mic CHB to balance vocal levels.
• Microphone Gain: Adjust the gain knob for Channel 2 to control the input sensitivity of the microphones.
• EQ Control: Use the High, Mid, and Low EQ knobs for Channel 2 to shape the tone of the microphone audio.

Image: A visual guide demonstrating how to control the wireless microphones, including individual volume adjustments and overall channel controls on the mixer.

3.3 Bluetooth Connection

To stream audio wirelessly from your mobile device:

1. Ensure the mixer is powered on.
2. Activate Bluetooth on your mobile device.
3. Search for available devices and select "BMG-24DSP" to pair.
4. Adjust the USB/BT Volume Knob on the mixer to control the Bluetooth audio level.

Image: Illustration of a mobile phone connecting to the DGNOG R4-PROS mixer via Bluetooth for wireless audio streaming.

3.4 DSP Effects

The mixer features 24 built-in DSP (Digital Signal Processor) effects to enhance your audio.

1. Use the DSP+ and DSP- buttons to cycle through the 24 available effects. The selected effect number will be displayed.
2. Adjust the FX knob to control the intensity or wet/dry mix of the selected effect.
3. Available effects include various voice changers, magic sounds, delays, and echoes.

Image: A close-up of the mixer's display and controls for selecting and adjusting the 24 built-in DSP effects.

3.5 PAD & 48V Power

• PAD Switch: When connecting an instrument with a high signal level (e.g., an electric guitar), activate the PAD switch to reduce the signal by 20dB. This prevents distortion and overload.
• 48V Phantom Power: Press the 48V switch to provide phantom power to inputs 1 and 2. This is essential for condenser microphones and certain studio equipment. Note that 48V power is only supplied via the XLR connector; it will not damage devices connected via 6.35mm cables.

Image: A detailed view of the PAD and 48V phantom power switches on the mixer, explaining their functions for signal attenuation and powering condenser microphones.

4. Maintenance

To ensure the longevity and optimal performance of your DGNOG R4-PROS mixer, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to clean the exterior of the mixer. Avoid using liquid cleaners, solvents, or abrasive materials, as these can damage the finish and internal components.
• Storage: Store the mixer in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity. If storing for extended periods, consider using the original packaging or a protective case.
• Cable Management: Ensure all cables are connected securely and are not excessively bent or strained. Loose or damaged cables can lead to signal issues.
• Battery Replacement: Replace microphone batteries promptly when the low battery indicator appears to avoid interruption during use. Remove batteries if microphones will not be used for an extended period to prevent leakage.

5. Troubleshooting

If you encounter issues with your DGNOG R4-PROS mixer, refer to the following common problems and solutions:

5.1 No Sound Output

• Check Power: Ensure the mixer is powered on and the power adapter is securely connected.
• Volume Levels: Verify that the Main Output volume, individual channel volumes, and connected speaker/amplifier volumes are turned up.
• Cable Connections: Confirm all audio cables (input and output) are correctly and securely connected.
• Input Source: Ensure the correct input source is selected on the mixer and any connected devices.

5.2 Wireless Microphone Issues

• No Sound/Intermittent Sound:
  • Check microphone batteries and replace if low.
  • Ensure microphones are powered on.
  • Verify microphone volume knobs on the mixer are not at minimum.
  • Check for obstructions or excessive distance between microphones and mixer (maximum range 200ft/60m).
  • Try changing the microphone frequency if interference is suspected.
• Distortion:
  • Reduce microphone gain on the mixer.
  • Ensure you are not speaking too close to the microphone.

5.3 Bluetooth Connection Problems

• Cannot Pair:
  • Ensure Bluetooth is enabled on your mobile device.
  • Make sure the mixer is in Bluetooth mode (if applicable) and discoverable.
  • Move your device closer to the mixer.
  • Forget the device on your phone and try pairing again.
• Intermittent Audio:
  • Reduce distance between devices.
  • Minimize interference from other wireless devices.

5.4 Audio Distortion or Noise

• Input Overload: Reduce the gain for the input channel or activate the PAD switch if using a high-level instrument.
• Ground Loop Noise: Ensure all equipment is connected to properly grounded outlets. Try using a ground loop isolator if necessary.
• Cable Quality: Use high-quality, shielded audio cables.

6. Specifications

Detailed technical specifications for the DGNOG R4-PROS mixer:

Image: A diagram illustrating the physical dimensions of the DGNOG R4-PROS mixer and a list of its input and output ports.

7. Warranty and Support

For warranty information and technical support, please refer to the documentation included with your purchase or contact DGNOG customer service directly. Keep your purchase receipt as proof of purchase for any warranty claims.