CT-60S / GH-4 Series Professional Audio Mixer Instruction Manual

1. Introduction

The CT-60S / GH-4 series professional audio mixers are versatile sound consoles designed for a wide range of audio applications. These mixers offer multiple input channels, integrated USB and Bluetooth connectivity, advanced DSP effects, and 48V phantom power, making them suitable for stage performances, meeting speeches, family entertainment, and broadcast applications.

Models Available

The CT-60S / GH-4 series includes various models with different channel counts and features:

• CT-60S: 6-way pure mixer
• CT-60S + Wireless Mic: 6-way pure mixer with metal wireless microphone
• CT-80S: 8-way pure mixer
• CT-80S + Wireless Mic: 8-channel pure mixer with wireless microphone combination
• CT-120S: 12-channel pure mixer
• CT-160S: 16-channel pure mixer
• GH-4: 4-input mixer with USB and Bluetooth
• GH-4 with Screen: 4-input mixer with USB and screen display
• GH-7: 7-input mixer with USB and Bluetooth
• GH-7 with Screen: 7-inputs mixer with USB and screen display
• GX-03/4 + Wireless Mic: 4-way pure mixer with metal wireless microphone (88 kinds of reverb effects)
• GX-06USB: 4-way pure mixer with 99 kinds of reverb effects

2. Key Features

These mixers are equipped with a range of features to enhance your audio experience:

• Multiple Input Channels: Available in 4, 6, 8, 12, and 16 channel configurations.
• High-Quality Interfaces: Professional XLR and TRS inputs for microphones and line-level devices.
• USB Connectivity: For direct playback from USB drives (MP3/U) and connection to computers.
• Bluetooth Functionality: Seamless wireless audio streaming from compatible devices.
• Digital Signal Processor (DSP): Integrated effects for sound enhancement (some models offer 88 or 99 types of reverb effects).
• 48V Phantom Power: Essential for condenser microphones.
• Gain Control: Individual channel gain adjustment.
• Balance Adjustment: High, Mid, and Low frequency equalization for each channel.
• Real-time Monitoring: Headphone output and indicator lights for precise level monitoring.

3. Setup Guide

3.1 Power Connection

1. Ensure the mixer's power switch is in the OFF position.
2. Connect the provided AC power cable to the AC INPUT port on the mixer.
3. Plug the other end of the power cable into a suitable power outlet (AC220-240V/50-60Hz).
4. Turn on the power switch.

3.2 Connecting Microphones and Line Devices

Use XLR cables for microphones and TRS/TS cables for line-level instruments or devices.

3.3 Connecting to a Power Amplifier

Connect the MAIN OUT (L/R) of the mixer to the input of your power amplifier using appropriate cables.

3.4 Connecting to Computer/Audio Equipment

Use RCA or other appropriate cables to connect external audio equipment or a computer to the mixer's input/output ports.

3.5 Connecting Live Sound Card Equipment

For advanced setups, connect a live sound card to the mixer for enhanced audio processing, typically via a phone and the sound card's input/output.

4. Operating Instructions

4.1 Basic Controls

Each channel typically features:

• GAIN Knob: Adjusts the input sensitivity for the connected device.
• EQ Knobs (HIGH, MID, LOW): Adjusts the frequency balance for treble, midrange, and bass.
• FX Knob: Controls the amount of effect applied to the channel.
• PAN Knob: Adjusts the stereo positioning (left/right).
• LEVEL Fader: Controls the output volume of the channel.

4.2 Using 48V Phantom Power

For condenser microphones, activate the +48V phantom power switch. Ensure dynamic microphones are not connected when phantom power is active, as this may cause damage.

4.3 USB/MP3 Playback

Insert a USB drive containing MP3 files into the USB port. Use the built-in media player controls (if available) to navigate and play tracks.

4.4 Bluetooth Connectivity

Activate Bluetooth on your mobile device and search for the mixer. Pair your device to stream audio wirelessly.

4.5 Video Overview of Features

Video 1: Demonstrates DSP chip, USB connection, Bluetooth connection, phantom power, and live sound effects.

5. Maintenance

• Cleaning: Use a soft, dry cloth to clean the mixer's surface. Avoid liquid cleaners or solvents.
• Storage: Store the mixer in a cool, dry place away from direct sunlight and extreme temperatures.
• Ventilation: Ensure proper ventilation around the mixer to prevent overheating. Do not block ventilation openings.
• Cable Management: Keep cables organized and free from kinks or excessive tension to prevent damage to connectors and ports.

6. Troubleshooting

• No Power: Check the power cable connection and ensure the power switch is ON. Verify the power outlet is functional.
• No Sound Output: Check all cable connections (inputs, main outputs, amplifier). Ensure channel faders and master faders are up. Verify input sources are active and producing sound.
• Distorted Sound: Reduce input gain (GAIN knob) and channel levels. Check for damaged cables or faulty microphones/instruments.
• No Microphone Sound: Ensure the microphone is properly connected. If using a condenser mic, verify +48V phantom power is enabled. Check microphone gain and channel level.
• Bluetooth Connection Issues: Ensure Bluetooth is enabled on both the mixer and your device. Unpair and re-pair the device. Move closer to the mixer to reduce interference.
• USB Playback Issues: Ensure the USB drive is formatted correctly and contains compatible audio files (e.g., MP3). Try a different USB drive.

7. Specifications

8. User Tips

• Start with Low Volume: Always begin with all volume faders and gain knobs at their lowest settings before connecting or powering on equipment to prevent sudden loud noises.
• Equalization: Experiment with the HIGH, MID, and LOW EQ knobs to tailor the sound to your environment and audio source. Small adjustments can make a big difference.
• Phantom Power Caution: Only activate 48V phantom power when using condenser microphones. Ensure dynamic microphones are disconnected or phantom power is off before connecting them.
• Cable Quality: Use high-quality, shielded cables to minimize noise and interference, especially for microphone inputs.
• Feedback Prevention: Position microphones away from speakers and adjust gain levels carefully to avoid audio feedback.

9. Warranty and Support

For any technical assistance, warranty claims, or support inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.