Douk Audio MC103-Pro XLR Balanced Audio Converter Stereo Passive Selector Switcher User Manual

Introduction

The Douk Audio MC103-Pro is a versatile passive stereo audio splitter designed for managing multiple XLR balanced audio sources or destinations. This device allows for convenient switching between different audio equipment without impacting sound quality, thanks to its passive design and high-quality components.

Figure 1: Douk Audio MC103-Pro Front View

Features

• Versatile 3-Way Passive Stereo Audio Splitter: Supports both 3 stereo XLR inputs to 1 output (3-IN-1-OUT) or 1 stereo XLR input to 3 outputs (1-IN-3-OUT) configurations.
• Seamless Source/Destination Switching: Designed for users with multiple XLR balanced output music equipment, allowing easy comparison of sound performance between different sources or amplifiers.
• Robust Construction: Features an all-aluminum shell to effectively shield against external noise and ensure high-quality signal transmission.
• High-Quality Connectivity: Equipped with gold-plated XLR ports for reliable electrical connection and minimal signal attenuation.
• Lossless Signal Transmission: Each internal channel is connected with shielding wire to prevent interference and ensure signal integrity.
• Passive Design: Operates without external power, ensuring no impact on the original sound quality. Includes silver-plated contacts for smooth operation and supports HOT/COLD simultaneous switching mode with a GND common terminal.
• Compact and Portable: Mini size allows for easy placement and transport.

Setup

The MC103-Pro offers two primary connection modes: 3-IN-1-OUT and 1-IN-3-OUT. Ensure all audio equipment is powered off before making connections.

3-IN-1-OUT Configuration

In this mode, you can connect up to three stereo XLR audio sources (e.g., DVD player, CD player, Decoder) to the MC103-Pro, and output the selected source to a single stereo XLR destination (e.g., an amplifier).

1. Connect your first stereo XLR audio source to the "X" input ports (Left and Right) on the rear panel of the MC103-Pro.
2. Connect your second stereo XLR audio source to the "Y" input ports (Left and Right).
3. Connect your third stereo XLR audio source to the "Z" input ports (Left and Right).
4. Connect your stereo XLR amplifier or other audio destination to the "I/O" output ports (Left and Right).

Figure 2: 3-IN-1-OUT Connection Diagram

1-IN-3-OUT Configuration

In this mode, you can connect a single stereo XLR audio source (e.g., a Decoder) to the MC103-Pro, and output that source to up to three different stereo XLR destinations (e.g., multiple amplifiers).

1. Connect your stereo XLR audio source to the "I/O" input ports (Left and Right) on the rear panel of the MC103-Pro.
2. Connect your first stereo XLR amplifier or other audio destination to the "X" output ports (Left and Right).
3. Connect your second stereo XLR amplifier or other audio destination to the "Y" output ports (Left and Right).
4. Connect your third stereo XLR amplifier or other audio destination to the "Z" output ports (Left and Right).

Figure 3: 1-IN-3-OUT Connection Diagram

The MC103-Pro is a passive device and does not require external power. Ensure all XLR cables are securely connected to prevent signal loss or noise.

Operating Instructions

Once the MC103-Pro is connected according to your desired configuration, operation is straightforward:

1. Power On Devices: Turn on your audio sources and destination devices (e.g., amplifiers).
2. Select Input/Output: Use the large rotary knob on the front panel of the MC103-Pro to select the desired input (X, Y, or Z in 3-IN-1-OUT mode) or output (X, Y, or Z in 1-IN-3-OUT mode). The knob will click into place for each selection.
3. Audio Playback: Begin playing audio from your selected source. The audio will be routed through the MC103-Pro to your chosen destination.

Since the MC103-Pro is a passive switcher, it does not add any coloration or degradation to the audio signal. The selection is purely mechanical, ensuring a clean signal path.

Maintenance

To ensure the longevity and optimal performance of your Douk Audio MC103-Pro, follow these simple maintenance guidelines:

• Cleaning: Use a soft, dry cloth to wipe the exterior of the device. Avoid using liquid cleaners, solvents, or abrasive materials, as these can damage the finish or internal components.
• Environment: Keep the device in a clean, dry environment, away from excessive dust, moisture, and direct sunlight.
• Connections: Periodically check all XLR cable connections to ensure they are secure. Loose connections can lead to signal issues or noise.
• Handling: Handle the device with care. While the aluminum shell is robust, dropping or subjecting it to strong impacts can cause damage.

Troubleshooting

If you encounter issues with your MC103-Pro, please refer to the following common troubleshooting steps:

Specifications

Figure 4: Product Dimensions and Weight

Figure 5: Passive Audio Switcher Design

Figure 6: Internal Wiring for High-Quality Signal Transmission

User Tips

• Ground Noise: If you experience common ground noise, consider adding an audio isolation module between the MC103-Pro and the affected device. This can help eliminate unwanted hum or buzz.
• Cable Quality: Using high-quality XLR cables can further enhance signal integrity and reduce potential interference.
• Comparison Tool: Leverage the 3-IN-1-OUT or 1-IN-3-OUT functionality to easily compare different audio sources or amplifiers, making it a valuable tool for audiophiles.

Warranty and Support

The Douk Audio MC103-Pro comes with a 2-year warranty, ensuring peace of mind regarding its quality and performance.

For technical support, troubleshooting assistance beyond this manual, or warranty claims, please contact your retailer or the Douk Audio customer service directly. Please have your purchase information and product model number (MC103-Pro) ready when contacting support.