BOMGE K7 Bluetooth Portable Audio Mixer User Manual

1. Introduction

Thank you for choosing the BOMGE K7 Bluetooth Portable Audio Mixer. This 7-channel mixing console is designed for versatile audio applications, including PC recording, DJ studio mixing, small performances, and home use. It features multiple input options, Bluetooth connectivity, USB playback, and a 3-band EQ for precise sound control. This manual provides detailed instructions for setting up, operating, and maintaining your mixer to ensure optimal performance and longevity.

Figure 1.1: Front view of the BOMGE K7 7-channel Bluetooth Portable Audio Mixer, showcasing its various input channels, faders, and control knobs.

2. Important Safety Instructions

Please read and understand all safety instructions before operating the BOMGE K7 mixer. Retain this manual for future reference.

• Power Source: Use only the provided power adapter. Ensure the voltage matches the requirements specified on the device.
• Water and Moisture: Do not expose this appliance to rain or moisture. Do not place objects filled with liquids, such as vases, on the apparatus.
• Ventilation: Ensure proper ventilation. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
• Heat: Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
• Cleaning: Clean only with a dry cloth. Unplug the unit from the power outlet before cleaning.
• Servicing: Do not attempt to service this product yourself. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
• Phantom Power: When using condenser microphones, ensure the +48V phantom power is activated only when needed and that all connections are secure before activation to prevent damage to equipment.

3. Package Contents

Upon unpacking your BOMGE K7 mixer, please verify that all items listed below are included and in good condition. If any items are missing or damaged, contact your retailer immediately.

• BOMGE K7 Console Mixer (7-channel)
• Power Adapter
• Instruction Manual (this document)

Figure 3.1: Image showing the BOMGE K7 mixer, its power adapter, and the instruction manual, along with the product dimensions.

4. Product Overview

The BOMGE K7 mixer features a comprehensive set of controls and inputs/outputs designed for intuitive operation and high-quality audio mixing.

4.1 Front Panel Controls and Connectors

Figure 4.1: Detailed view of the BOMGE K7 mixer's control panel, highlighting the various knobs, faders, and input/output ports.

• MIC/LINE Inputs (Channels 1-5): XLR and 1/4" (6.35mm) combo jacks for microphones or line-level instruments.
• INSERT Jacks (Channels 1-2): 1/4" jacks for connecting external effects processors to individual channels.
• GAIN Control: Adjusts the input sensitivity for each channel.
• HIGH/MID/LOW EQ: 3-band equalizer for adjusting treble, midrange, and bass frequencies for each channel.
• PAN Control: Adjusts the stereo position of the channel's signal.
• AUX Control: Sends a portion of the channel's signal to the AUX output for monitoring or external effects.
• EFF Control: Sends a portion of the channel's signal to the internal effects processor.
• Channel Faders: Adjust the volume level of each individual channel.
• PEAK LED: Illuminates when the input signal is too high, indicating potential clipping.
• +48V Phantom Power Button: Activates phantom power for condenser microphones.
• POWER LED: Indicates the unit is powered on.
• MAIN OUTPUT (L/R): RCA and 1/4" (6.35mm) jacks for connecting to main speakers or recording devices.
• PHONE Output: 1/4" (6.35mm) stereo jack for headphones.
• EFFECT Section: Controls for internal digital effects (DELAY, REP).
• AUX SEND: 1/4" (6.35mm) output for sending signal to external monitors or effects.
• USB Interface: For connecting USB flash drives for MP3 playback or connecting to a computer for audio interface functions.
• Digital MP3 Player Display: Shows status and track information for USB/Bluetooth playback.
• MP3 Player Controls: Play/Pause, Next/Volume Up, Previous/Volume Down, Menu.
• MAIN Fader: Controls the overall output volume of the mixer.

4.2 Rear Panel Connectors

Figure 4.2: Rear view of the BOMGE K7 mixer, showing the power input and power switch.

• POWER Switch: Turns the mixer on or off.
• AC-IN: Connector for the external power adapter.

5. Setup Guide

Follow these steps to set up your BOMGE K7 mixer for operation.

5.1 Power Connection

1. Ensure the mixer's POWER switch is in the OFF position.
2. Connect the provided power adapter to the AC-IN port on the rear panel of the mixer.
3. Plug the power adapter into a suitable electrical outlet.

5.2 Connecting Audio Devices

The BOMGE K7 mixer is compatible with a wide range of audio devices, including microphones, instruments, computers, and amplifiers.

Figure 5.1: Diagram illustrating the BOMGE K7 mixer's compatibility with various devices such as wired microphones, electronic organs, wireless microphones, guitars, computers, pure rear amplifiers, and power amplifiers.

1. Microphones: Connect XLR microphones to the MIC/LINE inputs using XLR cables. For condenser microphones requiring power, ensure the +48V phantom power is off before connecting, then activate it once the microphone is securely connected.
2. Instruments: Connect instruments like guitars, keyboards, or electronic organs to the MIC/LINE inputs using 1/4" (6.35mm) TS or TRS cables.
3. External Effects Processors: For individual channel effects, connect your external processor to the INSERT jacks on channels 1 and 2.
4. Main Speakers/Amplifiers: Connect your main speakers or power amplifier to the MAIN OUTPUT (L/R) RCA or 1/4" jacks.
5. Headphones: Plug your headphones into the PHONE output for monitoring.
6. Computer Connection (USB): Connect the mixer's USB Type B port to your computer's USB port using a USB cable. The mixer will function as an audio interface for recording and playback.

Figure 5.2: Illustration of the BOMGE K7 mixer's multiple input modes, showing XLR and 6.35mm audio mixed input support for each channel.

6. Operating Instructions

6.1 Basic Operation

1. After connecting all devices, turn on the mixer using the POWER switch on the rear panel. The POWER LED on the front panel will illuminate.
2. Set all channel faders and the MAIN fader to their lowest positions.
3. Gradually increase the GAIN control for each active input channel until the PEAK LED flashes only occasionally during the loudest parts of the signal.
4. Slowly raise the individual channel faders to the desired level.
5. Adjust the MAIN fader to control the overall output volume.

6.2 Equalization (EQ)

Each mono channel features a 3-band EQ (HIGH, MID, LOW) for shaping the tone of your audio. Adjust these knobs to enhance or cut specific frequencies.

Figure 6.1: Image highlighting the professional audio capabilities of the BOMGE K7 mixer, specifically the treble and bass intensity adjustment via the EQ knobs.

• HIGH: Adjusts the high frequencies (treble).
• MID: Adjusts the mid-range frequencies.
• LOW: Adjusts the low frequencies (bass).

6.3 Bluetooth Connectivity

The BOMGE K7 mixer allows wireless audio streaming from your smartphone, tablet, or other Bluetooth-enabled devices.

Figure 6.2: Image demonstrating the built-in Bluetooth wireless streaming receiver of the BOMGE K7 mixer, compatible with smartphones, tablets, and other modern devices.

1. Press the 'MODE' button on the digital MP3 player section until 'Bluetooth' mode is selected.
2. On your Bluetooth device, search for available devices and select 'BOMGE K7' (or similar name).
3. Once paired, audio from your device will stream through the mixer. Control playback using the MP3 player controls or your connected device.

6.4 USB Playback and Recording

The USB interface supports MP3 playback from a USB flash drive and acts as an audio interface for PC recording.

1. USB Playback: Insert a USB flash drive containing MP3 files into the USB port. The mixer will automatically switch to USB mode and begin playback. Use the MP3 player controls to navigate tracks and adjust volume.
2. PC Recording/Playback: Connect the mixer to your computer via the USB Type B port. The mixer will be recognized as an audio device. You can then use your preferred digital audio workstation (DAW) software to record audio from the mixer's main output or play back audio from your computer through the mixer.

6.5 Digital Effects

The mixer includes built-in digital effects. Use the EFF control on each channel to send signal to the effects processor, and adjust the DELAY and REP knobs in the EFFECT section to fine-tune the effect.

7. Maintenance

Proper maintenance ensures the longevity and optimal performance of your BOMGE K7 mixer.

• Cleaning: Disconnect the power before cleaning. Use a soft, dry cloth to wipe the surface of the mixer. Do not use liquid cleaners, aerosols, or solvents.
• Storage: When not in use for extended periods, store the mixer in a cool, dry place away from direct sunlight and extreme temperatures.
• Ventilation: Ensure the ventilation slots are clear of dust and debris to prevent overheating.
• Cable Management: Avoid bending or crimping cables excessively, especially near connectors, to prevent damage.

8. Troubleshooting

If you encounter issues with your BOMGE K7 mixer, refer to the following common problems and solutions.

9. Specifications

Technical specifications for the BOMGE K7 Bluetooth Portable Audio Mixer (7-channel).

10. Warranty and Support

BOMGE products are designed for reliability and performance. For specific warranty details and support, please refer to the official BOMGE channels.

• Official User Guide (PDF): For a downloadable version of the user guide, please visit: BOMGE K7 User Guide PDF
• BOMGE Brand Store: Explore other BOMGE products and find additional support resources by visiting the official BOMGE store: BOMGE Music Studio Store
• Customer Service: If you have any questions or require technical assistance, please contact BOMGE customer service through the official website or your purchase platform.