1. Safety Information
Please read and adhere to all safety and operating instructions before using the appliance. Retain these instructions for future reference.
1.1. General Warnings
- Electrical Shock Risk: To reduce the risk of electrical shock, do not remove the cover or back. There are no user-serviceable parts inside. Refer servicing to qualified personnel.
- Fire/Moisture Risk: To reduce the risk of fire or electrical shock, do not expose this appliance to rain or moisture.
- Uninsulated Dangerous Voltage: This symbol alerts you to the presence of uninsulated dangerous voltage inside the enclosure, which may be sufficient to constitute a risk of shock.
- Important Operating Instructions: This symbol alerts you to important operating and maintenance instructions in the accompanying literature. Read the manual.
1.2. Usage Precautions
- Water and Moisture: Do not use near water (e.g., bathtub, washbowl, kitchen sink, laundry tub, wet basement, or swimming pool).
- Ventilation: Ensure the appliance is situated so its location or position does not interfere with proper ventilation. Avoid placing it on a bed, sofa, rug, or similar surface that may block ventilation openings. Do not place it in a built-in installation (e.g., bookcase or cabinet) that may impede airflow.
- Heat: Keep away from heat sources such as radiators, heat registers, stoves, or other heat-producing appliances (including amplifiers).
- Power Source: Connect only to a power supply of the type described in the operating instructions or marked on the appliance.
- Grounding/Polarization: Take precautions to ensure grounding or polarization means are not defeated.
- Power-Cord Protection: Route power supply cords to prevent them from being walked on or pinched. Pay particular attention to cords, plugs, convenience receptacles, and the point where they exit the appliance.
- Cleaning: Clean only as recommended by the manufacturer.
- Non-use Periods: Unplug the power cord from the outlet when unused for a long period.
- Object and Liquid Entry: Ensure objects do not fall and liquids are not spilled into the enclosure through openings.
- Damage Requiring Service: If the power cord/plug is damaged, objects/liquid enter, exposed to rain, operates abnormally, or dropped/damaged, service by qualified personnel is required.
- Servicing: Do not attempt to service the appliance beyond what is described in this manual. Refer all other servicing to qualified service personnel.
2. Product Overview
2.1. Key Features
- 6-channel mixing console with two stereo channels and a separate stereo tape channel.
- Separate input JACK controls for mic and line inputs on all mono channels.
- XLR mic connectors on all mono channels.
- Low-noise, discrete mic preamplifiers on all microphone inputs.
- Dedicated inserts on all mono channels.
- Balanced 1/4" stereo jacks and balance controls on all stereo channels.
- Separate stereo tape channel with 1/4" and RCA jacks.
- Stereo output for recording applications.
- English musical active 3-band EQ on all seven channels.
- AUX and effects paths with separate gain controls on all channels.
- High-grade-sealed faders and potentiometers.
- Insert option for external effects devices.
- AUX Send and EFF Send controls in the main section for optimal level adjustment.
- Headphones output with dedicated volume control.
- Built-in +48V phantom power for condenser mics.
- Extremely rugged construction.
- 7-band stereo graphic equalizer.
- USB play & record functionality.
- Bluetooth function.
- 2 AUX outputs.
2.2. Mixer Layout
The following diagram illustrates the various controls and connections on your LOMEHO AM-GT6 mixing console.
Key Controls:
- XLR/6.35 Combination Socket: Input for microphones and line-level signals.
- 48V Button: Activates phantom power for condenser microphones.
- GAIN Knob: Adjusts the input gain for each channel.
- HIGH, MID, LOW EQ Knobs: 3-band equalizer for adjusting high, mid, and low frequencies.
- AUX1, AUX2/FX Knobs: Controls for sending signal to AUX 1 and AUX 2/Effects.
- PAN Knob: Adjusts the stereo position of the channel signal.
- PEAK Light: Indicates when the input signal is clipping.
- Channel Volume Knob: Adjusts the volume of individual channels.
- USB/PC Port: For U-disk playback/recording and PC connection.
- USB Button Module: Controls for USB/Bluetooth playback and recording.
- 7 Band Main EQ: Graphic equalizer for main output.
- PROGRAM Knob: Selects DSP effects.
- PARAMETER Knob: Adjusts parameters of the selected effect.
- EFFECT Knob: Adjusts the overall effect level.
- AUX Main Knob: Controls the overall AUX output level.
- PHONE Knob: Adjusts headphone volume.
- Main Fader: Controls the main output volume.
- PHONES Jack: Output for headphones.
- MAIN OUT (XLR/6.35): Main stereo outputs.
- CH-4/USB MP3 Switch: Toggles between Channel 4 input and USB/MP3 player.
3. Setup Guide
3.1. Power Connection
Connect the included DC 12V power adapter to the 'DC 12V IN' jack on the rear panel of the mixer. First, connect the adapter to the mixer, then plug it into an appropriate AC outlet. The mixer supports various regional plug types (EU, US, AU) via the adapter.
Use the ON/OFF switch to power the unit on or off. Rapidly switching the unit on/off can cause malfunction; wait about 5 seconds before turning it on again after powering off. Even when off, electricity may still flow; unplug the AC adapter if not using for a while.
3.2. Microphone Connections
The mixer features XLR/6.35mm combination sockets for microphone and line inputs on channels 1-6.
- Condenser Microphones: Connect via an XLR cable. Press the 48V button for the corresponding channel to activate phantom power. This is essential for condenser microphones to function. Phantom power is supplied only through the XLR input, not the 6.35mm jack.
- Dynamic Microphones: Can be connected via XLR or 6.35mm jack.
- If using an XLR cable with a dynamic microphone, ensure the 48V button for that channel is OFF to prevent damage to the microphone.
- If using a 6.35mm jack for a dynamic microphone, the 48V button's state (on/off) does not affect the microphone as phantom power is not supplied to this input type. However, using an XLR connection is generally recommended for better sound quality with dynamic microphones.
- Incompatible Microphones: Condenser microphones requiring 48V phantom power will not work if connected via a 6.35mm adapter. USB microphones are also not compatible with the mixer's USB port.
3.3. Instrument and Audio Device Connections
Connect instruments like electronic pianos or other audio devices (e.g., DVD players, mobile phones) to the mixer's LINE IN/MIC inputs. For devices like DVD players or mobile phones, use RCA to 6.35mm jack cables. Avoid using XLR cables for these devices.
3.4. Output Connections
The mixer provides balanced XLR and 1/4" jack MAIN OUTPUTS to connect to external power amplifiers, active speakers, or other audio processing equipment like equalizers or effects units.
3.5. Headphone Connection
Connect a standard pair of headphones to the PHONES jack for monitoring your mix.
4. Operating Instructions
4.1. Basic Controls
- GAIN Knob: Adjust the input sensitivity for each channel. Set it so the PEAK light flashes only occasionally.
- 3-Band EQ (HIGH, MID, LOW): Use these knobs to shape the tone of each channel. HIGH controls high frequencies, MID controls mid-range, and LOW controls bass frequencies.
- PAN Knob: Position the channel's signal within the stereo field (left to right).
- Channel Volume Knob: Adjust the individual volume level of each channel.
- Main Fader: Controls the overall output volume of the main mix.
- PHONES Knob: Adjusts the volume of the headphones output.
4.2. Digital Audio Player (USB/Bluetooth)
The mixer features a built-in digital audio player with USB and Bluetooth capabilities. The USB port supports U-disk playback and recording, as well as PC connection for audio.
4.2.1. USB Playback and Recording
The USB port supports U-disks formatted as FAT32. Ensure your U-disk contains at least one song in MP3, WAV, FLAC, or WMA format.
- U-Disk Playback: Insert a FAT32 formatted U-disk with audio files into the USB port. The mixer will automatically detect and begin playing the audio.
- U-Disk Recording: The mixer can record the mixed signal (MONO) to a U-disk in MP3 format.
- USB Button Module: Use the buttons below the display for control.
- MODE (USB/BT): Long press to switch between USB and Bluetooth mode. Short press for Play/Pause.
- VOL- (Previous Song): Long press to reduce volume. Short press for previous song.
- VOL+ (Next Song): Long press to add volume. Short press for next song.
- REC (Recording/Playback): Long press to enter/exit recording. Short press for ONE/ALL switch (playback mode).
4.2.2. Bluetooth Function
The mixer can connect to Bluetooth-compatible devices for audio playback.
- Pairing: Long press the MODE button to switch to Bluetooth mode. The display will show "BLUE" flashing. On your device, search for "AEaudio-BT" and connect. Once connected, "BLUE" will stop flashing.
- Incompatible Devices: The mixer cannot connect to Bluetooth speakers. It is designed to receive audio via Bluetooth, not transmit.
4.3. DSP Effects
The mixer includes 99 built-in DSP effects to enhance your audio.
- Selecting Effects: Turn the PROGRAM knob to select the desired effect (01-99). Press the knob to enable it. The mixer automatically restores previously used parameter values for each effect.
- Adjusting Effect Parameters: Use the PARAMETER knob to adjust specific parameters (e.g., depth, speed) of the selected effect.
- Applying Effects to Channels: Use the AUX2/FX knob on each channel to send signal to the effects processor.
- Overall Effect Level: Use the EFFECT knob to adjust the overall output level of the effects.
- Effect Return Level: Use the EFFE LEVEL knob to adjust the volume of the returned effect sound.
4.4. PC Connection for Recording and Playback
The mixer can be connected to a PC via USB for recording and playback. This allows you to use the mixer as an audio interface.
- Connection Steps:
- Power on the mixer.
- Connect a USB cable (Type-A plug) from the mixer's USB port to your PC.
- The mixer display will show "PC" status.
- On your PC, the mixer will be recognized as an audio device (e.g., "JieLi BR21").
- PC Recording Settings: In your PC's sound settings or recording software (e.g., Audacity), select the mixer (e.g., "JieLi BR21") as the input and output device.
4.5. Graphic Equalizer
The 7-band stereo graphic equalizer allows you to fine-tune the overall sound of your mix to suit room acoustics or personal preference.
Adjust the faders for each frequency band (80Hz, 160Hz, 430Hz, 1K, 2.5K, 5.3K, 10K) to boost or cut specific frequencies.
5. Maintenance
To ensure the longevity and optimal performance of your LOMEHO AM-GT6 mixer, follow these maintenance guidelines:
- Cleaning: Clean the appliance only as recommended by the manufacturer. Use a soft, dry cloth to wipe down the exterior. Avoid using harsh chemicals or abrasive cleaners.
- Protective Film: A protective film is applied to the display to prevent scratches. If the display appears unclear, you may carefully peel off this film.
- Storage: When not in use for extended periods, store the mixer in a dry, dust-free environment. Unplug the power adapter.
- Avoid Physical Damage: Protect the mixer from impacts, drops, and excessive force on knobs and faders.
6. Troubleshooting
If you encounter issues with your LOMEHO AM-GT6 mixer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output | Power not connected; Main Fader or Channel Volume too low; incorrect input/output connections. | Check power supply and ON/OFF switch. Increase Main Fader and relevant Channel Volume knobs. Verify all cables are correctly connected to inputs and outputs. |
| Microphone not working | 48V Phantom Power not activated for condenser mic; incorrect mic type for input; faulty cable. | For condenser mics, ensure 48V button is ON. For dynamic mics, ensure 48V is OFF if using XLR. Check mic cable. Ensure it's not a USB mic or condenser mic with 6.35mm adapter. |
| No Bluetooth connection | Mixer not in Bluetooth mode; incorrect device selected; attempting to connect to Bluetooth speaker. | Long press MODE button to enter Bluetooth mode (display shows "BLUE" flashing). Search for "AEaudio-BT" on your device. Remember, the mixer cannot connect to Bluetooth speakers. |
| USB U-disk not playing/recording | U-disk not FAT32 format; unsupported audio file format; no audio files on U-disk. | Ensure U-disk is FAT32 formatted. Check if audio files are MP3, WAV, FLAC, or WMA. Verify U-disk contains at least one song. |
| PC recording not working | Mixer not selected as audio device on PC; incorrect software settings. | Ensure mixer is connected via USB and shows "PC" status. In PC sound settings or recording software, select "JieLi BR21" as input/output. |
| Distorted sound | Input gain too high (clipping); damaged cables; faulty speaker/headphones. | Reduce GAIN knobs if PEAK lights are constantly on. Check cables for damage. Test with different speakers/headphones. |
7. Technical Specifications
| Category | Specification | |
|---|---|---|
| Mic Input (Channels 1-5) | Frequency Response | 10 Hz to 200 kHz |
| Gain Range | +14 dB to +60 dB | |
| SNR | 120 dB E.I.N. | |
| Line Input (Channels 1-5) | Frequency Response | 10 Hz to 130 kHz |
| Gain Range | -6 dB to +38 dB | |
| SNR | 95 dB E.I.N. | |
| Stereo Channel | Frequency Response | 10 Hz to 70 kHz |
| Gain Range | Line: -8 to +15 dB / Mic: +13 to +60 dB | |
| SNR | Line: 96 dB / Mic: 104 dB E.I.N. | |
| Equalization | LOW | 50 Hz, +/-15 dB |
| MID | 700 Hz, +/-15 dB | |
| HI | 10 kHz, +/-15 dB | |
| Main Section Outputs | Main Outputs | +28 dBu balanced / +22 dBu unbalanced |
| AUX Send | +22 dBu unbalanced | |
| EFF Send | +22 dBu unbalanced | |
| Tape Out | +22 dBu unbalanced | |
| Phones Output | +15 dBu / 150 | |
| Physical | Dimensions (H x W x D) | 4.3 cm x 29 cm x 24 cm (1.69 in x 11.42 in x 9.45 in) |
| Weight | 2.045 kg | |
| Power Supply | DC 12V (Adapter compatible with 100-240V AC, 50/60Hz) | |
8. User Tips
- Bluetooth for Playback Only: The mixer's Bluetooth function is designed for receiving audio playback from devices like smartphones, not for transmitting mono microphone signals.
- Connecting Guitars/Instruments: You can connect an electric guitar or electronic piano using a 6.35mm jack cable to the LINE IN/MIC inputs. For optimal sound, ensure the gain is set appropriately and avoid using XLR adapters for instruments unless specifically designed for line-level signals.
- USB Recording: The USB port allows direct recording to a FAT32 formatted U-disk or to a PC. This is a convenient way to capture your mixes.
- Mixer vs. Amplifier: This unit is a mixing console, not a power amplifier. It requires external powered speakers or a separate power amplifier to drive passive speakers.
9. Warranty and Support
LOMEHO warrants the mechanical and electronic components of this product to be free of defects in material and workmanship for a period of one (1) year from the original date of purchase. This warranty is subject to the conditions outlined below.
9.1. Warranty Conditions
- Warranty services are provided only if the product is accompanied by a copy of the original retail dealer's invoice.
- If a defect occurs within the warranty period due to normal wear and tear or improper handling, LOMEHO will, at its discretion, either repair or replace the product.
- If the warranty claim is justified, the product will be returned to the user freight prepaid.
9.2. Exclusions
The warranty does not cover damages or defects caused by:
- Misuse, neglect, or failure to operate the unit in compliance with the instructions in this manual.
- Connection or operation of the unit in any way that does not comply with applicable technical or safety regulations.
- Force majeure or any other condition beyond the control of LOMEHO.
- Any repair or opening of the unit carried out by unauthorized personnel (including the user).
- Normal wear and tear, particularly of faders, potentiometers, keys, buttons, and similar parts.
This warranty does not exclude or limit the buyer's statutory rights provided by national law.
