1. Introduction
This manual provides detailed instructions for the BOMGE F7 Bluetooth Audio Mixer, a professional 4/7 channel mic/line mixer. It covers setup, operation, maintenance, and specifications to ensure optimal performance and longevity of your device. Please read this manual thoroughly before operating the mixer.
2. Safety Instructions
CAUTION: To reduce the risk of electrical shock, do not remove the cover (or back). No user serviceable parts inside; refer servicing to qualified personnel.
WARNING: To reduce the risk of fire or electrical shock, do not expose this appliance to rain or moisture.
⚠
This symbol, wherever it appears, alerts you to the presence of uninsulated dangerous voltage inside the enclosure—voltage that may be sufficient to constitute a risk of shock.
ℹ
This symbol, wherever it appears, alerts you to the important operating and maintenance instructions in the accompanying literature. Read the manual.
Detailed Safety Instructions:
- All the safety and operation instructions should be read before the appliance is operated.
- The safety and operating instructions should be retained for future reference.
- All warnings on the appliance and in the operating instructions should be adhered to.
- All operation and user instructions should be followed.
- Water and Moisture: The appliance should not be used near water (e.g., near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc.).
- Ventilation: The appliance should be situated so that its location or position does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or placed in a built-in installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings.
- Heat: The appliance should be situated away from heat sources such as radiators, heat registers, stoves or other appliances (including amplifiers) that produce heat.
- Power Source: The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance.
- Grounding or Polarization: Precautions should be taken so that the grounding or polarization means of an appliance is not defeated.
- Power-Cord Protection: Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords and plugs, convenience receptacles and the point where they exit from the appliance.
- Cleaning: The appliance should be cleaned only as recommended by the manufacturer.
- Non-use Periods: The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.
- Object and Liquid Entry: Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.
3. Setup Instructions
3.1. Power Connection
- Ensure the mixer's power switch (26) is in the OFF position.
- Connect the supplied power adapter to the AC ADAPTOR IN Connector (27) on the rear panel.
- Plug the power adapter into a suitable AC outlet.
- Turn the POWER Switch (26) to the ON position. The POWER Indicator (17) will light up.
CAUTION: Use only the adapter included with this mixer. Use of a different adapter may result in fire or electric shock.
3.2. Audio Connections
The BOMGE F7 mixer is compatible with various audio devices. Refer to the diagrams below for proper connection methods.
Input Connections:
- MIC Input Jacks (1): Balanced XLR-type microphone input jacks (1:Ground; 2:Hot; 3:Cold). Connect wired microphones here.
- LINE Input Jacks (2): Balanced TRS phone-jack line inputs (T:Hot; R:Cold; S:Ground). Connect balanced or unbalanced phone plugs.
- LINE Input Jacks (3): Unbalanced phone-jack stereo line inputs.
- INSERT Jacks (4): These TRS (tip, ring, sleeve) phone jacks provide an insert point between the equalizer and fader. Use for connecting external processors like graphic equalizers, compressors, or noise filters. (Tip = send/out; Ring = return/in; Sleeve = ground).
- PHANTOM +48V Switch (16): Activates +48V phantom power for XLR mic input jacks. Turn this on when using condenser microphones.
Output Connections:
- MAIN OUT Jacks (25): Deliver the mixer's stereo output. Connect to power amplifiers driving main speakers or recording devices.
- SEND Jacks (22):
- MON: Impedance balanced phone-jack type output for monitoring systems, effect units, or cue boxes.
- FX: Impedance balanced phone-jack type output for external effect units.
- PHONES Jack (23): Connect a pair of headphones to this stereo phone jack.
- TAPE OUT Jacks (24): RCA pin jacks for connecting to an external recorder (e.g., MD recorder) to record the MAIN OUT signal.
Audio Connection Diagrams:
For detailed wiring of balanced/unbalanced mono/stereo 1/4" jack plugs, XLR connectors, Insert Send & Return, and Headphones, please refer to the diagrams on page 5 of the original manual (or the image below for visual reference).
4. Operating Instructions
4.1. Channel Control Section
- GAIN Control (5): Adjusts the input signal level. Set so the CLIP indicator (9) lights only occasionally on highest input transients.
- Equalizer (HIGH, MID, and LOW) (6): Three-band equalizer for high (12kHz), mid (2.5kHz), and low (80Hz) frequencies, each with +/-15dB adjustment. 0 position is flat response.
- AUX Control (7): Adjusts the signal level sent from the channel to the AUX bus.
- EFFECT Controls (8): Adjusts the signal level sent from the channel to the EFFECT bus.
- PEAK Indicator (9): Lights red when the post-EQ signal reaches 3 dB below clipping.
- PAN Control (10): Determines the stereo positioning of the channel signal on the Main L and R buses.
- Channel Fader (11): Adjusts the level of the channel signal to balance between channels.
4.2. Effect and Master Control Section
- DELAY Control (12): Adjusts the effect speed.
- REP Control (13): Adjusts the effect depth.
- AUX control (14): Adjusts the level of the signals.
- EFFECT RTN Fader (15): Adjusts the signal level from the internal digital effect unit to the MAIN bus.
- Level Meter (18): LED meter displays MAIN OUT signal level. "0" segment is nominal output, CLIP segment lights red at clipping.
- PHONES Control (19): Controls the level of the signal output to the PHONES jack.
- MAIN OUT Master Fader (20): Adjusts the signal level sent to the MAIN OUT jacks.
4.3. MP3 Player Operation
- USB MP3 PLAYER (21):
- INDICATOR: Flashes normally for all songs cycle, flashes quickly for single cycle.
- USB JACK: Insert an external USB disk.
- Play/Pause control button: Press to play or pause.
- Prev / volume - control buttons: Press once for previous song, press and hold to decrease volume.
- Next / Volume + Control buttons: Press once for next song, press and hold to increase volume.
- Bluetooth Wireless Streaming: The mixer features built-in Bluetooth for wireless streaming from smartphones, tablets, and other compatible devices.
5. Maintenance
- Cleaning: The appliance should be cleaned only as recommended by the manufacturer. Use a soft, dry cloth. Avoid abrasive cleaners or solvents.
- Non-use Periods: If the mixer will not be used for a long period, unplug the power cord from the outlet.
- Storage: Store the mixer in a cool, dry place away from direct sunlight and extreme temperatures.
- Power Switch (26) Note: A small current continues to flow while the switch is in the OFF position. If you do not plan to use the mixer for a while, be sure to unplug the AC adaptor from the wall outlet.
6. Troubleshooting
This section provides solutions to common issues. If you encounter a problem not listed here, or if the issue persists, please contact qualified service personnel.
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power adapter not connected or faulty. Power switch off. | Ensure power adapter is securely connected and plugged into a working outlet. Turn the POWER switch (26) ON. Check if the POWER Indicator (17) lights up. |
| No sound output | Incorrect connections. Faders/controls set too low. Mute engaged. | Verify all audio cables are correctly connected to inputs and outputs. Check GAIN controls (5), Channel Faders (11), and MAIN OUT Master Fader (20) are at appropriate levels. Ensure no channels or main output are muted. |
| Distorted sound | Input signal too high (clipping). Incorrect EQ settings. | Reduce GAIN (5) until the PEAK Indicator (9) only flashes occasionally. Adjust EQ settings (6) to a neutral position (0) and then fine-tune. |
| Phantom power not working | PHANTOM +48V switch (16) is off. | Ensure the PHANTOM +48V switch (16) is in the ON position when using condenser microphones. |
| USB MP3 player not working | USB disk not inserted correctly or incompatible format. | Ensure the USB disk is fully inserted into the USB JACK (21). Check if the audio files on the USB disk are in a supported format. |
7. Specifications
| Category | Parameter | Value |
|---|---|---|
| Mic Input (Channels 1-7) | Frequency Response | 10 Hz to 200 kHz |
| Gain Range | +14 dB to +60 dB | |
| SNR | 120 dB E.I.N. | |
| Line Input (Channels 1-7) | Frequency Response | 10 Hz to 130 kHz |
| Gain Range | -6 dB to +38 dB | |
| SNR | 95 dB E.I.N. | |
| Stereo Channels | Frequency Response | 10 Hz to 70 kHz |
| Gain Range | -8 to +15 dB | |
| SNR | 96 dB | |
| Equalization | LOW | 80 Hz, +/-15 dB |
| MID | 2.5 kHz, +/-15 dB | |
| HI | 12 kHz, +/-15 dB | |
| Main Mix | Main Outputs | +22 dBu unbalanced |
| AUX Send | +22 dBu unbalanced | |
| Tape Out | +22 dBu unbalanced | |
| Phones Output | +15 dBu/150 | |
| Physical | Dimensions (D x W x H) | 4 channel: 210 x 250 x 38 mm 7 channel: 330 x 250 x 38 mm |
| Weight | 4 channel: 1.5 Kg 7 channel: 3.2 Kg | |
| Voltage Range | USB (5-20V DC) | |
| Power Source | AC (via Inbox adaptor) |
8. User Tips
- Using as a Sound Card: The BOMGE F7 mixer can function as a USB audio interface (sound card) when connected to a computer via USB. This allows for recording audio from the mixer to your computer and playing back audio from your computer through the mixer.
- Optimal Gain Staging: Always set your GAIN controls (5) carefully. The PEAK indicator (9) should only flash briefly on the loudest parts of your signal to avoid distortion.
- Bluetooth Connectivity: For stable Bluetooth streaming, ensure your mobile device or tablet is within a reasonable range of the mixer and there are no major obstructions.
9. Warranty and Support
For warranty information, please refer to the documentation provided at the time of purchase or contact the seller/manufacturer directly. Technical support may also be available through the seller or BOMGE Audio Sound Store.
For further assistance, please visit the official BOMGE website or contact their customer service.
