LOMEHO AM-AX4/AM-AX6 Professional Audio Mixer Instruction Manual

1. Introduction

Thank you for choosing the LOMEHO AM-AX4 or AM-AX6 Professional Audio Mixer. This manual provides essential information for the safe and efficient operation of your device. Please read it thoroughly before use and keep it for future reference.

The LOMEHO AM-AX series mixers are designed for versatile audio applications, including mobile phone live broadcasting, computer recording, and general sound reinforcement. They feature multiple input channels, a 7-band graphic equalizer, 99 DSP effects, and +48V phantom power for condenser microphones.

2. Key Features

• Channel Configuration: Available in 4-channel (AM-AX4) and 6-channel (AM-AX6) versions. The AM-AX4 typically includes 2 mono and 1 stereo mono input.
• Digital Signal Processing (DSP): Integrated 99 types of 24-bit DSP effects for enhanced audio.
• Equalization: 7-band graphic equalizer for precise tone control.
• Phantom Power: Independent +48V phantom power supply for condenser microphones.
• Connectivity: USB interface for playback and recording with computers, and Bluetooth function for wireless audio streaming from mobile devices.
• Input Functions: -26dB PAD and 80Hz HPF (High-Pass Filter) functions on relevant channels.
• Portability: Compact and portable design.

3. Setup Guide

3.1 Unpacking and Power Connection

1. Carefully remove the mixer and all accessories from the packaging.
2. Ensure the package includes the mixer and the DC12V 2A power adapter.
3. Connect the DC12V 2A power adapter to the mixer's power input and then to a suitable power outlet.

3.2 Connecting Audio Devices

• Microphones: Connect microphones to the MIC/LINE input jacks. For condenser microphones requiring power, activate the +48V PHANTOM power switch.
• Line-Level Devices: Connect instruments or other line-level audio sources to the LINE inputs.
• Headphones: Connect headphones to the PHONES output jack for monitoring.
• Main Output: Connect your speakers or recording device to the MAIN OUT (L/R) jacks.
• USB Connection: Use a USB cable to connect the mixer to a computer for digital audio input/output.

3.3 Bluetooth Pairing

1. Turn on the mixer.
2. Activate Bluetooth on your mobile device.
3. Select the mixer (e.g., 'LOMEHO Mixer') from the list of available Bluetooth devices on your mobile device to pair.
4. Once paired, you can stream audio wirelessly to the mixer.

4. Operating Instructions

4.1 Basic Audio Mixing

• GAIN Control: Adjust the input sensitivity for each channel. Start with a low setting and gradually increase until the PEAK indicator flashes occasionally.
• EQ Controls (HI, MID, LOW): Use these knobs to adjust the high, mid, and low frequencies for each channel to shape the tone.
• EFFX Control: Adjust the amount of effect sent from each channel to the DSP effects processor.
• LEVEL Faders: Control the overall volume of each channel.
• PAN Control: Adjust the stereo position (left/right) of each mono channel.
• MAIN Fader: Controls the overall output volume of the mixer.

4.2 Using DSP Effects

1. The mixer features 99 built-in 24-bit DSP effects.
2. Use the PROGRAM knob to select the desired effect number, which will be displayed on the digital screen.
3. Adjust the PARAMETER knob to fine-tune the selected effect.
4. Use the LEVEL EFFX fader to control the overall volume of the effects return.

4.3 USB Playback and Recording

• When connected to a computer via USB, the mixer acts as an audio interface.
• You can play audio from your computer through the mixer and record the mixer's output to your computer.
• Ensure your computer's audio settings are configured to use the mixer as the input/output device.

4.4 Special Functions

• PAD Switch (-26dB): Reduces the input signal level by 26dB, useful for very loud sources to prevent clipping.
• HPF Switch (80Hz): Activates an 80Hz high-pass filter, removing unwanted low-frequency rumble or noise.

5. Maintenance

• Cleaning: Use a soft, dry cloth to clean the mixer's surface. Avoid abrasive cleaners or solvents.
• Storage: Store the mixer in a cool, dry place away from direct sunlight and extreme temperatures.
• Liquid Exposure: Prevent liquids from entering the mixer, as this can cause severe damage.
• Power Off: Always turn off the mixer and disconnect the power adapter when not in use or during cleaning.

6. Troubleshooting

• No Power: Check if the power adapter is securely connected to both the mixer and the power outlet. Ensure the power outlet is functional.
• No Sound Output: Verify all audio cables are correctly connected. Check the MAIN fader and individual channel LEVEL faders are raised. Ensure connected speakers are powered on and functioning.
• Distorted Sound: Reduce the GAIN control on the input channel and the MAIN fader. Check for PEAK indicators flashing excessively.
• Bluetooth Connection Issues: Ensure the mixer's Bluetooth is active and your mobile device is within range. Try unpairing and re-pairing the device.
• Microphone Not Working: Check microphone cable connection. If using a condenser microphone, ensure +48V phantom power is enabled.

7. Specifications

8. User Tips

• When connecting to a computer, ensure the mixer is recognized as an audio device in your operating system's sound settings and your recording software.
• For live streaming with a mobile phone, use appropriate cables and adapters to connect the mixer's output to your phone's input, if direct USB connection is not supported by your phone.
• Experiment with the 99 DSP effects to find the best sound for your vocals or instruments. The 'PROGRAM' and 'PARAMETER' knobs offer a wide range of customization.
• Always set the GAIN levels carefully to avoid clipping (distortion) and ensure a clean signal. The PEAK LED will indicate if the signal is too hot.

Video 1: A general overview video showcasing the LOMEHO mixer in an office setting.

9. Warranty and Support

For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your proof of purchase for any warranty claims.