LOMEHO AM-GT8 8-Channel Mixing Console User Manual

1. Introduction

The LOMEHO AM-GT8 is an 8-channel professional mixing console designed for various audio applications, from live performances to studio recording. It features 48V phantom power for condenser microphones, 99 built-in DSP effects, a 7-band graphic equalizer, USB recording and playback capabilities, and Bluetooth connectivity. This manual provides detailed instructions for setting up, operating, and maintaining your AM-GT8 mixer to ensure optimal performance.

2. Key Features

• 8 Channels: Versatile input options for microphones and line-level instruments.
• 48V Phantom Power: Essential for powering condenser microphones on channels 1-4.
• 99 DSP Effects: A wide range of digital sound effects including Echo, Delay, Pitch, Chorus, Flange, Distortion, and more.
• 7-Band Stereo Graphic Equalizer: Precise frequency control for main output.
• 2 AUX Outputs: For connecting external effectors or monitor systems.
• USB Play & Record: Directly play audio from a USB drive or record your mix to a computer.
• Bluetooth Compatible: Seamlessly stream audio from your smartphone or other Bluetooth devices.
• U-Disk Support: Play MP3, FLAC, WAV, WMA audio files directly from a USB flash drive.
• 1/4" Headphone Output: Dedicated output for monitoring your mix.
• Applicable Scenarios: Ideal for outdoor events, theater productions, parties, and radio broadcasting.

3. Setup Guide

3.1. Mixer Overview

Familiarize yourself with the control layout of the AM-GT8 mixer:

Diagram showing the various knobs, faders, and ports on the LOMEHO AM-GT8 mixing console, including GAIN, EQ, AUX, FX, PAN, Channel Volume, Main Fader, PHONES jack, MAIN OUT, USB/PC Port, and USB Button Module.

3.2. Power Connection

Connect the mixer to a suitable power source using the provided power adapter. Ensure the power switch is in the OFF position before connecting.

3.3. Microphone Connections

Proper microphone connection is crucial for sound quality and equipment safety. Refer to the diagram below:

Visual guide for connecting different microphone types: XLR 48V Condenser Mic (48V ON), XLR Dynamic Mic (48V OFF), and 1/4" Dynamic Mic (48V OFF).

• XLR Plug 48V Condenser Mic: Connect via XLR. Activate the 48V phantom power switch for the respective channel.
• XLR Plug Dynamic Mic: Connect via XLR. DO NOT activate the 48V phantom power switch.
• 1/4" Plug Dynamic Mic: Connect via 1/4" jack. DO NOT activate the 48V phantom power switch.

3.4. Audio Output Connections

• Main Output: Connect the MAIN OUT (XLR or 1/4" jacks) to your main speakers or power amplifier.
• AUX Outputs: Use AUX1 and AUX2 outputs to connect external effectors, equalizers, or monitor systems.

Diagram illustrating how to connect external effectors or equalizers to the mixer's two AUX outputs.

3.5. Headphone Connection

Connect your headphones to the 1/4" PHONES jack for monitoring.

Image highlighting the 1/4" headphone output jack on the mixer.

3.6. USB/PC Connection

Connect the mixer's USB/PC port to your computer for recording and playback functions.

3.7. Bluetooth Pairing

To connect a Bluetooth device:

1. Ensure the mixer's Bluetooth function is active (indicated by 'BLUE' on the display).
2. On your smartphone or Bluetooth-enabled device, search for available devices.
3. Select "AEaudio-BT" from the list to pair.

Image showing a smartphone successfully paired with the mixer via Bluetooth, displaying "AEaudio-BT".

4. Operating Instructions

4.1. Basic Channel Controls

• GAIN Knob: Adjusts the input sensitivity for each channel. Set it to an appropriate level to avoid clipping.
• EQ Knobs (HIGH, MID, LOW): Control the treble, midrange, and bass frequencies for each channel.
• AUX Knob: Sends a portion of the channel signal to the AUX output for external effects or monitors.
• FX Knob: Sends a portion of the channel signal to the internal DSP effects processor.
• PAN Knob: Adjusts the stereo position (left/right) of the channel signal.
• Channel Volume Knob: Controls the individual volume level of each channel.

4.2. 48V Phantom Power

The 48V phantom power switch (located near input jacks 1-4) provides power to condenser microphones. Only activate this switch when using condenser microphones. Ensure it is OFF for dynamic microphones to prevent damage.

Close-up of the 48V phantom power switch, indicating ON/OFF positions and its relation to microphone inputs.

4.3. DSP Effects

The AM-GT8 features 99 built-in DSP effects. Use the PARAMETER knob to select and adjust the desired effect.

Display showing the '99 DSP Effects' feature with a partial list of available effects such as Echo, Delay, Pitch, Chorus, Flange, Distortion, and Ping-Pong Dly.

4.4. 7-Band Stereo Graphic Equalizer

Adjust the sliders on the 7-band graphic equalizer to fine-tune the overall frequency response of your main mix.

4.5. USB/U-Disk Functions

The USB module allows for playback from a USB flash drive and recording to a computer.

Image detailing USB functions, compatible U-Disk formats (MP3, FLAC, WAV, WMA), and the functions of the USB control buttons (MODE, VOL-, VOL+, REC).

• U-Disk Playback: Insert a USB flash drive with audio files (MP3, FLAC, WAV, WMA). Use the USB buttons (MODE, VOL-, VOL+, REC) to control playback.
• USB Button Functions:
  • MODE: Short press to switch modes (e.g., USB, Bluetooth). Long press to choose frequency.
  • VOL-: Short press to reduce volume. Long press for previous track.
  • VOL+: Short press to increase volume. Long press for next track.
  • REC: Long press to enter/exit recording mode.
• PC Recording: Connect the mixer to a computer via USB. The mixer will act as an audio interface, allowing you to record your mix using appropriate software.

5. Maintenance

• Cleaning: Use a soft, dry cloth to clean the mixer's surface. Avoid liquid cleaners or abrasive materials.
• Protective Film: The display screen comes with a protective film. Keep it on to prevent scratches.
• Storage: Store the mixer in a cool, dry place away from direct sunlight and extreme temperatures.
• Cable Management: Ensure all cables are neatly organized and not under strain to prevent damage to connectors and ports.

6. Troubleshooting

6.1. Common Connection Issues

Refer to the following diagram for common incorrect connection scenarios:

Diagram illustrating common incorrect connections: connecting a condenser microphone without 48V phantom power, connecting a USB condenser microphone directly to the mixer's USB port, and connecting a dynamic microphone with 48V phantom power activated.

• No Sound from Condenser Mic: Ensure 48V phantom power is activated for the connected channel.
• Distortion/Hum from Dynamic Mic: Ensure 48V phantom power is OFF for dynamic microphones.
• USB Condenser Mic Not Working: USB condenser microphones typically require a direct connection to a computer or a dedicated audio interface, not the mixer's USB port.
• No Bluetooth Connection: Ensure the mixer's Bluetooth mode is active and your device is searching for "AEaudio-BT". Try restarting both devices.
• No USB Playback: Check if the USB drive is properly formatted and contains supported audio files (MP3, FLAC, WAV, WMA). Ensure the mixer is in USB playback mode.

6.2. General Audio Issues

• No Output Sound: Check all cable connections, ensure main fader and channel volumes are up, and verify external speakers/amplifiers are powered on and connected correctly.
• Weak Signal: Adjust the GAIN knob for the input channel.
• Feedback: Reduce microphone gain, move microphones further from speakers, or adjust EQ settings to cut problematic frequencies.

7. Specifications

Image displaying the physical dimensions of the mixer and a visual representation of the items included in the packing list, such as the mixer, power adapter, and user manual.

8. User Tips

• Gain Staging: Always set your input GAIN levels carefully. Start with the gain low and gradually increase it until the signal is strong but not clipping (indicated by peak LEDs).
• EQ for Clarity: Use the EQ to enhance clarity and remove unwanted frequencies. A common tip is to cut frequencies rather than boost them excessively to avoid muddiness or harshness.
• Experiment with Effects: The 99 DSP effects offer a wide range of creative possibilities. Experiment with different effects and parameters to find what best suits your audio.
• Monitor Your Mix: Use headphones to monitor your mix closely, especially when recording, to catch any subtle issues that might not be apparent through main speakers.

9. Warranty and Support

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