Nobsound Little Bear MC102 Mini Stereo Audio Selector User Manual

1. Introducció

The Nobsound Little Bear MC102 is a compact, passive 3.5mm stereo audio selector designed to manage multiple audio sources and outputs. This device allows users to switch between two audio inputs to one output, or one audio input to two outputs, without requiring external power. Its passive design ensures no impact on sound quality.

Image 1: The Nobsound Little Bear MC102 Mini Stereo Audio Selector.

2. Característiques i components del producte

The MC102 features a straightforward design for ease of use. Key components include:

• A Input Jack: Connects to an audio source or output.
• B Input Jack: Connects to a second audio source or output.
• IN/OUT Jack (Priority): Main audio input or output port.
• A,B Input Selector: Button to switch between A and B channels.
• Control de volum: Rotary knob to adjust audio output level.
• Botó de silenci: Instantly mutes the audio output.
• New 3.5mm Port (between A and B): An additional input/output port for convenience, though the main IN/OUT port has priority.

Image 2: Front panel overview of the MC102 with labeled input/output jacks, selector, volume control, and mute button.

Imatge 3: Superior i inferior views of the MC102, illustrating the internal layout and port arrangement.

3. Configuració i connexió

The MC102 offers flexible connection options for various audio setups. Ensure all devices are powered off before making connections.

3.1. 2-IN-1-OUT Configuration

This configuration allows you to connect two audio sources to the MC102 and select one to output to a single audio device (e.g., active speakers, headphones).

1. Connect your first audio source (e.g., CD player, computer) to the Una presa d'entrada.
2. Connect your second audio source (e.g., smartphone, tablet) to the B Input Jack.
3. Connect your audio output device (e.g., active speakers, headphones) to the IN/OUT Jack.

Image 4: Connection diagram for 2-IN-1-OUT setup. Two audio sources (computer, smartphone) connect to A and B inputs, and the output (headphones or speakers) connects to the IN/OUT port.

3.2. 1-IN-2-OUT Configuration

This configuration allows you to connect one audio source to the MC102 and output the audio to two different audio devices (e.g., headphones and active speakers), selecting which one is active.

1. Connect your audio source (e.g., computer, smartphone) to the IN/OUT Jack.
2. Connect your first audio output device (e.g., active speakers) to the Una presa d'entrada.
3. Connect your second audio output device (e.g., headphones) to the B Input Jack.

Image 5: Connection diagram for 1-IN-2-OUT setup. One audio source (computer) connects to the IN/OUT port, and two output devices (speakers, headphones) connect to A and B inputs.

4. Instruccions de funcionament

Once connected, operating the MC102 is straightforward:

• Selecting Input/Output: Premeu el botó A/B Input Selector button to toggle between the A and B channels. The active channel will be indicated by the button's position.
• Ajust de volum: Gira el Control de volum botó en sentit horari per augmentar el volum i en sentit antihorari per disminuir-lo.
• Funció de silenci: Premeu el botó Botó de silenci to instantly silence the audio output. Press it again to unmute.

5. Important Notes and Considerations

Please observe the following important notes for optimal performance and compatibility:

Image 6: Important notes for the MC102, detailing specific usage conditions and features.

1. Components actualitzats: The MC102 Black version features customized potentiometers and isolation modules designed to minimize potential volume adjustment issues and background noise.
2. Turntable Incompatibility: The MC102 is not compatible with turntables directly. PHONO signals are typically too low, resulting in lower than usual output. Direct connection may not work effectively.
3. Passive Speaker Connection: This device cannot be connected directly to passive speakers. To use with passive speakers, you must connect your sound source to a preamplifier, then to the MC102, and finally to active speakers. Alternatively, connect your sound source to the MC102, then to an amplifier, and finally to passive speakers.
4. New 3.5mm Port: A new 3.5mm port has been added between the original A and B ports for user convenience, allowing all cables to be connected on one side. However, the opposite 3.5mm port (the main IN/OUT port) still has priority over this new port.

6. Manteniment

To ensure the longevity and optimal performance of your Nobsound Little Bear MC102, follow these maintenance guidelines:

• Neteja: Feu servir un drap suau i sec per netejar l'exterior del dispositiu. Eviteu utilitzar netejadors líquids o dissolvents, ja que poden danyar l'acabat o els components interns.
• Medi ambient: Store and operate the device in a dry, dust-free environment. Avoid exposure to extreme temperatures, humidity, or direct sunlight.
• Manipulació: Manipuleu el dispositiu amb cura. Eviteu deixar-lo caure ni sotmetre'l a impactes forts.
• Connexions: Comproveu periòdicament totes les connexions dels cables per assegurar-vos que estiguin ben fixades i que no estiguin danyats.

7. Solució De Problemes

If you encounter issues with your MC102, refer to the following troubleshooting steps:

• Sense sortida de so:
  • Verify all audio cables are securely connected to the correct ports on the MC102 and your audio devices.
  • Ensure the volume control knob on the MC102 is not set to minimum.
  • Check if the mute button is engaged. Press it to disengage.
  • Confirm that your audio source device is playing audio and its volume is adequately set.
  • If using the 1-IN-2-OUT configuration, ensure the correct output channel (A or B) is selected.
• Humming or Background Noise:
  • Assegureu-vos que tots els cables estiguin en bon estat i degudament blindats.
  • Try using different audio cables to rule out faulty cabling.
  • Disconnect other electronic devices that might be causing interference.
  • As a passive device, the MC102 relies on the quality of the input signal. If the source signal is noisy, the output will reflect this.
• Low Volume Output:
  • Increase the volume on both your audio source device and the MC102.
  • Ensure you are not attempting to connect a turntable directly, as the PHONO signal level is too low for this passive device.
  • If connecting to passive speakers, confirm that an external amplifier is used, as the MC102 does not provide amplificació.

8. Especificacions

The following are the technical specifications for the Nobsound Little Bear MC102 Mini Stereo Audio Selector:

Image 7: Packing list and dimensions of the MC102. Net Weight: 100g/0.22lb, Package Weight: 200g/0.44lb.

9. Garantia i Suport

For warranty information, technical assistance, or customer support regarding your Nobsound Little Bear MC102, please refer to the manufacturer's official website or contact their customer service department directly. It is recommended to retain your purchase receipt as proof of purchase for any warranty claims.