1. Product Overview
The Weymic CK-120 is a professional 12-channel audio mixing console designed for a wide range of applications including DJ performances, stage events, karaoke, and general music production. It features a compact, ultra-thin design with a robust all-metal body, ensuring durability and portability. This mixer integrates modern connectivity options such as USB and Bluetooth, alongside traditional XLR and AUX inputs, making it versatile for various audio setups.

Figure 1.1: Front view of the Weymic CK-120 Professional Audio Mixing Console, showcasing its 12 channels, faders, knobs, and central control panel.
2. Key Features
- 12-Channel Mixer: Provides ample inputs for various instruments and microphones.
- Low Noise Preamplifiers: Equipped with high-precision preamplifiers for clear audio reproduction.
- Ultra-Thin Design: Features a robust body with an ultra-thin profile (only 1.5 inches), enhancing portability.
- Versatile Connectivity: Includes DJ MP3/USB input and integrated Bluetooth for wireless connection, compatible with USB drives, flash players, and MP3 devices.
- Broad Compatibility: Suitable for various applications including family KTV, band performances, campus activities, and conferences.
- Durable Construction: All-metal body with sealed rotary controls designed to resist dust and dirt.
- 48V Phantom Power: Supports studio condenser microphones, compatible with both Mac and PC.

Figure 2.1: Detail of the USB playback interface, highlighting its compatibility with various audio formats for stable transmission.

Figure 2.2: The mixer demonstrating Bluetooth connectivity with a smartphone, allowing wireless audio streaming.
3. Setup Guide
Follow these steps to set up your Weymic CK-120 mixing console:
- Unpacking: Carefully remove the mixer from its packaging and inspect for any damage. Retain packaging for future transport or storage.
- Power Connection: Connect the provided power cable to the mixer's power input and then to a suitable electrical outlet. Ensure the mixer's power switch is in the OFF position before connecting.
- Input Connections:
- Microphones: Connect XLR microphones to the dedicated XLR inputs (channels 1-12). If using condenser microphones, activate the 48V Phantom Power switch (located near the main output section).
- Line-Level Devices: Connect instruments (guitars, keyboards) or other line-level audio sources (CD players, media players) to the 1/4" LINE inputs on each channel.
- USB Devices: Insert a USB flash drive into the USB port for MP3 playback.
- Bluetooth Devices: Enable Bluetooth on your external device (e.g., smartphone, tablet) and pair it with the mixer. Refer to the "Operating Instructions" for detailed Bluetooth pairing.
- Output Connections:
- Main Output: Connect the L/R MAIN OUT XLR or 6.35mm outputs to your amplifier, powered speakers, or recording interface.
- Headphones: Connect headphones to the PHONES jack for monitoring.
- Aux Send/Return: Use the AUX SEND and RETURN jacks for connecting external effects processors or monitor systems.
- Initial Power On: Once all connections are secure, switch the mixer's power ON.

Figure 3.1: Detailed view of the mixer's input section, illustrating microphone and line inputs, gain, and equalization controls for individual channels.

Figure 3.2: Detailed view of the mixer's output section and central control area, showing main outputs, MP3 controls, phantom power switch, and headphone jack.
4. Operating Instructions
4.1. Channel Controls
- GAIN Knob: Adjusts the input sensitivity for each channel. Start with the knob fully counter-clockwise and slowly increase until the signal is strong without clipping (indicated by the PK! LED).
- EQ (HF, MF, LF) Knobs: These are 3-band equalizers for High Frequency (HF), Mid Frequency (MF), and Low Frequency (LF). Use them to shape the tone of each input.
- AUX Knob: Controls the amount of signal sent from the channel to the AUX send output, typically used for monitor mixes or external effects.
- FX Knob: Controls the amount of signal sent from the channel to the internal effects processor.
- PAN Knob: Adjusts the stereo position (left to right) of the channel's signal in the main mix.
- Channel Fader: Controls the overall volume level of the individual channel in the main mix.
- PFL Button: (Pre-Fader Listen) Allows you to monitor the channel's signal through headphones before it reaches the main mix.

Figure 4.1: Close-up of the 45mm faders, designed for comfortable and precise damping slide adjustment, allowing smooth volume control.
4.2. Main Section Controls
- MP3 Control Area: Use the integrated controls (play/pause, skip tracks, mode switch) to manage USB or Bluetooth audio playback.
- 48V Phantom Power Switch: Activates phantom power for condenser microphones connected to XLR inputs. Ensure microphones are connected before activating.
- AUX MST Volume Adjustment: Controls the master volume for the AUX send.
- Reverb Effect Adjustment: Adjusts the level of the built-in reverb effect.
- Monitor Headphone Volume: Controls the volume of the headphones output.
- Main L/R Faders: Control the overall output volume of the main stereo mix.
4.3. Bluetooth Pairing
- Ensure the mixer is powered on.
- On the MP3 control panel, select the Bluetooth mode. The display will show "BT" or a similar indicator.
- On your external device (smartphone, tablet, computer), go to Bluetooth settings and search for available devices.
- Select "WEYMIC MIXER" or a similar name from the list to pair.
- Once paired, you can stream audio from your device to the mixer. Adjust the MP3 channel volume and main faders as needed.
5. Maintenance and Care
Proper maintenance ensures the longevity and optimal performance of your mixing console.
- Cleaning:
- Disconnect power before cleaning.
- Use a soft, dry cloth to wipe down the exterior.
- For stubborn dirt, a slightly damp cloth with mild soap can be used, ensuring no liquid enters the unit.
- Use a soft brush or compressed air to clean around knobs, faders, and jacks to remove dust and debris.
- Storage:
- Store the mixer in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity.
- If transporting, use appropriate padding or a carrying case to protect the unit.
- Handling: Avoid dropping or subjecting the mixer to strong impacts. Do not place heavy objects on top of the unit.
6. Troubleshooting
If you encounter issues with your Weymic CK-120, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output from main speakers. |
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| No sound from a specific channel. |
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| Hissing or static noise. |
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| Bluetooth device won't pair. |
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7. Technical Specifications
| Feature | Detail |
|---|---|
| Brand | WEYMIC |
| Model Number | CK-12 Channel |
| Number of Channels | 12 |
| Connectivity Technology | Bluetooth, USB |
| Hardware Interface | USB |
| Audio Input | XLR microphone, AUX, Bluetooth |
| Output Connector Type | RCA (also XLR and 6.35mm main outputs) |
| Power Source | Corded Electric |
| Voltage | 48 Volts (for Phantom Power) |
| Item Weight | 5.64 Kilograms |
| Package Dimensions | 56.79 x 43.2 x 11.3 cm |

Figure 7.1: Diagram illustrating the physical dimensions of the Weymic CK-120 mixing console.
8. Warranty and Support
For warranty information, technical support, or service inquiries regarding your Weymic CK-120 mixing console, please contact WEYMIC customer service. Refer to the product packaging or the official WEYMIC website for the most current contact details and warranty terms.
For general inquiries, you may visit the WEYMIC brand page on Amazon.





