WEYMIC CK-80 Professional 8-Channel Mixer Instruction Manual

1. Introduction

The WEYMIC CK-80 Professional 8-Channel Mixer is a versatile audio mixing console designed for various applications including recording, DJ performances, stage events, and karaoke. This manual provides essential information for setting up, operating, and maintaining your mixer to ensure optimal performance.

Figure 1: WEYMIC CK-80 Professional 8-Channel Mixer overview.

2. Key Features

• 8-Channel music mixer with low noise and high-precision preamplifiers.
• Ultra-thin and strong all-metal body design (1.5 inches).
• Integrated MP3/USB input and built-in Bluetooth connectivity for versatile audio playback.
• Compatible with USB flash drives, computers (Mac and PC), and Bluetooth devices for mixing and recording.
• Suitable for various applications such as home KTV, band performances, campus activities, and conferences.
• Sealed rotary controls to resist dust and grime.
• Provides +48V Phantom Power for studio condenser microphones.

3. Setup Instructions

3.1 Power Connection

1. Ensure the mixer's power switch is in the OFF position.
2. Connect the supplied power adapter to the DC INPUT port on the mixer's rear panel.
3. Plug the power adapter into a suitable electrical outlet.
4. Turn the POWER switch to the ON position. The power indicator will illuminate.

3.2 Connecting Microphones and Line Inputs

The CK-80 mixer features 8 input channels, each supporting both XLR microphone connections and 6.35mm (1/4-inch) line inputs.

Figure 2: Multiple microphone and line inputs on the mixer.

1. For microphones, connect the XLR cable to the MIC input jack for the desired channel.
2. For line-level instruments (e.g., keyboards, guitars with preamps), connect a 6.35mm (1/4-inch) cable to the LINE input jack.
3. If using condenser microphones, activate the +48V Phantom Power switch (see Section 4.2).

3.3 Connecting Main Outputs

Connect your main speakers or amplifier to the L MAIN OUT R XLR outputs for stereo sound.

3.4 USB and Bluetooth Connectivity

The mixer supports USB flash drive playback and Bluetooth audio streaming.

Figure 3: USB playback interface on the mixer.

Figure 4: Establishing a Bluetooth connection to the mixer.

1. USB Playback: Insert a USB flash drive containing MP3 files into the USB port on the digital MP3 player section. Use the built-in controls (play/pause, skip tracks, mode) to manage playback.
2. Bluetooth Connection: Press the MODE button on the digital MP3 player until 'Bluetooth' is displayed. On your mobile device, search for the mixer's Bluetooth name (e.g., 'BLUE-AUDIO' or similar) and pair.
3. USB to PC Recording: Connect the mixer to your computer via a USB cable. The mixer will function as an audio interface, allowing you to record mixed audio directly to your computer.

4. Operating Instructions

4.1 Channel Controls

Each input channel features a set of controls to shape the audio signal:

• GAIN: Adjusts the input sensitivity for the microphone or line signal.
• EQ (High, Mid, Low): Three-band equalizer for adjusting the treble (HF), midrange (MF), and bass (LF) frequencies of each channel.
• AUX: Controls the send level to the auxiliary output, often used for monitor mixes or external effects.
• FX: Controls the send level to the internal effects processor.
• PAN: Adjusts the stereo position of the channel's signal (left to right).
• Level Fader: Controls the overall volume of the channel's signal sent to the main mix.

Figure 5: Close-up of channel faders for precise level adjustment.

Figure 6: Illustration of EQ curves for high, mid, and low frequencies.

4.2 +48V Phantom Power

The mixer provides +48V phantom power for condenser microphones. Locate the +48V switch on the main section of the mixer. Press this button to activate phantom power for channels 1-4. Ensure condenser microphones are connected before activating phantom power to prevent damage.

Figure 7: The +48V Phantom Power switch.

4.3 Real-time Monitoring

Connect headphones to the PHONES output for real-time monitoring of the mixed audio. Adjust the HEADPHONES volume knob to your desired listening level.

Figure 8: Headphone output for real-time audio monitoring.

4.4 Effects Control

The mixer includes built-in reverb effects. Each channel has an FX knob to send a portion of its signal to the effects processor. The overall level of the effects is controlled by the EFFECTS fader in the master section.

5. Maintenance

• Cleaning: Use a soft, dry cloth to clean the mixer's surface. Avoid liquid cleaners or solvents that could damage the finish or internal components.
• Storage: Store the mixer in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity.
• Handling: Avoid dropping the mixer or subjecting it to strong impacts.

6. Troubleshooting

• No Power: Ensure the power adapter is securely connected to the mixer and a working power outlet. Check the power switch position.
• No Sound Output: Verify that all cables are correctly connected. Check channel level faders, main output faders, and speaker volume. Ensure the correct input source is selected (e.g., USB, Bluetooth).
• Distorted Sound: Reduce the GAIN knob for the affected channel. Check if the input signal is too hot. Ensure cables are not damaged.
• No Microphone Sound: Confirm the microphone is properly connected. If using a condenser microphone, ensure +48V Phantom Power is activated. Check the channel's GAIN and Level faders.
• Bluetooth Connection Issues: Ensure the mixer is in Bluetooth mode. Check your device's Bluetooth settings and try re-pairing. Move closer to the mixer to reduce interference.

7. Specifications