BOMGE CT-16 16-Channel Audio Sound Mixer

1. Introduction

Thank you for choosing the BOMGE CT-16 16-Channel Audio Sound Mixer. This digital console is designed for professional audio mixing, offering a comprehensive set of features including multiple input channels, a built-in DSP processor, MP3 player, Bluetooth connectivity, and 48V phantom power. This manual provides detailed instructions to help you set up, operate, and maintain your mixer for optimal performance.

2. Important Safety Information

• Read all instructions carefully before operating the device.
• Keep this manual for future reference.
• Do not expose this equipment to rain or moisture.
• Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
• Only use attachments/accessories specified by the manufacturer.
• Unplug this apparatus during lightning storms or when unused for long periods.
• 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.
• Ensure the power source matches the voltage requirements of the mixer (110V or 220V).

3. Package Contents

Upon unpacking, please ensure all items are present and in good condition:

• BOMGE CT-16 16-Channel Audio Sound Mixer
• AC Power Adaptor (appropriate for your region, 110V or 220V)
• User Manual (this document)

4. Product Overview

The BOMGE CT-16 mixer features a robust design with 16 input channels, comprehensive control over audio signals, and versatile connectivity options. Below is a detailed breakdown of its main components and interfaces.

4.1 Front Panel Layout

Figure 4.1: Overall front view of the BOMGE CT-16 mixer.

4.2 Channel Strip Controls

Each channel strip provides dedicated controls for input signal management:

Figure 4.2: Detailed view of a single input channel's controls.

• Microphone Audio Input (XLR): For connecting microphones.
• LINE Input (TRS): For connecting line-level instruments or devices.
• Gain Adjustment Knob: Controls the input sensitivity of the channel.
• High Frequency Adjustment (HF): Adjusts the treble frequencies (12KHz).
• Mid-frequency Adjustment (MF): Adjusts the mid-range frequencies (2.5KHz).
• Low Frequency Adjustment (LF): Adjusts the bass frequencies (80KHz).
• Auxiliary Transmission (AUX): Sends signal to an auxiliary output for monitoring or external effects.
• FX Send: Sends signal to the internal effects processor.
• Pan Adjustment: Positions the channel's sound in the stereo field (left to right).
• Peak Signal Indicator: Lights up when the input signal is too high, indicating potential clipping.
• Volume Fader: Controls the output level of the channel.
• Monitor Button (PFL): Pre-Fader Listen, allows monitoring the channel's signal before the fader.

4.3 Main Control Section

The main control section manages overall mixer functions, including master outputs, effects, and media playback.

Figure 4.3: Detailed view of the main control panel.

• Display: Shows information for MP3 player, Bluetooth, and effects.
• USB Socket: For connecting USB drives for MP3 playback.
• MP3 Playback Volume: Adjusts the volume of the MP3 player.
• MP3 Player Signal Distribution Button: Controls how the MP3 signal is routed.
• Function Button: Navigates menus and controls MP3/Bluetooth functions.
• 48V Phantom Power Switch: Activates +48V phantom power for condenser microphones.
• Auxiliary Send Master Control: Master volume for the AUX send output.
• Monitor Button: For monitoring main outputs.
• Effect Send Signal Master Knob (FX): Master level for the effects send.
• DLY (Delay Time Interval): Adjusts the timing of delay effects.
• REP (Echo Frequency and Depth): Controls the characteristics of echo effects.
• Sound Image Localization (PAN): Master pan control.
• TAPE INPUT Volume Knob: Controls the volume of the Tape In input.
• Headphone Volume Control: Adjusts the volume for the headphone output.

4.4 Rear Panel Connections

The rear panel provides various input and output jacks for connecting external audio equipment.

Figure 4.4: Rear panel input and output connections.

• L MAIN OUT R (XLR): Left and Right main audio outputs.
• CTRL ROOM (TRS): Control room monitor outputs.
• Effect Send Output Jack: Sends signal to external effects units.
• Effect Return Input Jack: Receives processed signal from external effects units.
• Mixed Output Interface (LINE): Additional line-level outputs.
• Headphone Output Jack (PHONES): Stereo headphone output.
• Auxiliary Send Output Jack (AUX SEND): Sends signal to auxiliary devices.
• Dual Track Source Input and Output (TAPE IN/OUT): RCA jacks for connecting tape decks or other stereo sources.

4.5 Device Compatibility

The CT-16 mixer offers strong compatibility with a wide range of audio equipment.

Figure 4.5: Examples of compatible devices including microphones, speakers, electronic organs, guitars, computers, power amplifiers, CD players, and trolley sound systems.

5. Setup Guide

Follow these steps to set up your BOMGE CT-16 mixer:

1. Power Connection: Connect the provided AC power adaptor to the mixer's power input and then to a suitable electrical outlet. Ensure the voltage (110V or 220V) matches your region's power supply.
2. Main Outputs: Connect your main speakers or power amplifier to the L MAIN OUT R XLR jacks on the rear panel.
3. Monitor Outputs: If using control room monitors, connect them to the CTRL ROOM TRS jacks.
4. Headphones: Plug your headphones into the PHONES jack on the rear panel.
5. Microphones: Connect microphones to the XLR inputs on the desired channels. If using condenser microphones, activate the +48V Phantom Power switch on the main control section.
6. Line-Level Devices: Connect instruments (e.g., keyboards, guitars with preamps) or other audio devices to the LINE TRS inputs on the desired channels.
7. External Effects (Optional): If using an external effects processor, connect the mixer's Effect Send Output Jack to the input of your effects unit, and the output of your effects unit to the Effect Return Input Jack.
8. USB Playback: Insert a USB drive containing MP3 files into the USB socket on the main control section.
9. Bluetooth Pairing: Activate Bluetooth on your external device (e.g., smartphone, tablet). On the mixer's display, navigate to the Bluetooth mode and pair with the mixer.

6. Operating Instructions

This section details how to operate the various functions of your CT-16 mixer.

6.1 Basic Channel Operation

1. Power On: Ensure all connections are secure, then power on the mixer.
2. Gain Adjustment: For each active channel, speak or play into the microphone/instrument. Slowly turn up the Gain Adjustment Knob until the Peak Signal Indicator flashes only occasionally. Avoid constant illumination to prevent distortion.
3. Equalization (EQ): Use the High, Mid, and Low Frequency Adjustment knobs to shape the tone of each channel.
   • HF (High Frequency): Adds clarity or reduces harshness.
   • MF (Mid-frequency): Controls the presence and body of the sound.
   • LF (Low Frequency): Adjusts the bass and warmth.
4. Pan Adjustment: Use the Pan Adjustment knob to position the sound of each channel in the stereo image (left, center, or right).
5. Volume Fader: Adjust the individual channel volume using the Volume Fader.
6. Monitor (PFL): Press the PFL button to listen to a channel's signal in your headphones before it reaches the main mix.

6.2 Master Section Operation

1. Main Output Volume: Use the L MAIN OUT R faders to control the overall volume of the main mix.
2. Headphone Volume: Adjust the Headphone Volume Control for comfortable monitoring.
3. Control Room Monitor: Adjust the CTRL ROOM level for your control room speakers.
4. 48V Phantom Power: Activate the +48V Phantom Power switch only when using condenser microphones that require it. Ensure microphones are connected before activating.

6.3 Effects Processor

The built-in DSP processor offers various effects. Use the FX Send knob on individual channels to send signal to the effects unit. In the main control section:

• FX Send Signal Master Knob: Controls the overall level of the signal sent to the effects.
• DLY (Delay Time Interval): Adjusts the timing of delay effects.
• REP (Echo Frequency and Depth): Controls the characteristics of echo effects.
• Display and Function Button: Use these to select and fine-tune specific effects programs.

6.4 MP3 Player and Bluetooth

The mixer includes a built-in MP3 player and Bluetooth connectivity for versatile audio playback.

Figure 6.1: USB socket for MP3 playback.

Figure 6.2: Bluetooth connectivity for wireless audio streaming.

• MP3 Playback: Insert a USB drive with MP3 files. Use the Function Button and Display to navigate and select tracks. Adjust the MP3 Playback Volume.
• Bluetooth: After pairing your device, select Bluetooth mode on the mixer. Play audio from your device, and control its volume using the MP3 Playback Volume knob on the mixer.

7. Specifications

Figure 7.1: Mixer dimensions (Width: 400mm, Depth: 340mm, Height: 40mm).

8. Maintenance

• Cleaning: Use a soft, dry cloth to clean the surface of the mixer. Do not use liquid cleaners or aerosols.
• Storage: Store the mixer in a cool, dry place away from direct sunlight and extreme temperatures.
• Ventilation: Ensure proper ventilation around the mixer to prevent overheating.
• Cable Management: Keep cables organized and free from kinks or excessive tension to prevent damage.

9. Troubleshooting

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

• No Sound Output:
  • Check all power connections and ensure the mixer is turned on.
  • Verify that main output faders and individual channel faders are raised.
  • Ensure speakers/amplifiers are connected correctly and powered on.
  • Check input source connections and their volume levels.
• Distorted Sound:
  • Reduce the Gain Adjustment Knob on the input channel if the Peak Signal Indicator is constantly lit.
  • Lower the volume faders on channels or main outputs.
  • Check for damaged cables or faulty input sources.
• Microphone Not Working / Low Volume:
  • Ensure the microphone is properly connected to the XLR input.
  • If using a condenser microphone, verify that +48V Phantom Power is activated.
  • Increase the Gain Adjustment Knob for the microphone channel.
  • Test with a different microphone or cable.
• MP3/Bluetooth Playback Issues:
  • For USB, ensure the USB drive is formatted correctly and contains compatible MP3 files.
  • For Bluetooth, ensure your device is paired and within range. Check the MP3 Playback Volume.

10. User Tips

• Voice Effects: The built-in DSP processor includes various effects. Experiment with the FX Send, DLY, and REP controls to find suitable voice effects for your needs.
• Power Adaptor Compatibility: The mixer is available in 110V and 220V versions. Always ensure you are using the correct power adaptor for your region to prevent damage.

11. 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.