Freeboss AG-AT4 4-Channel Mixing Console

Introduction

The Freeboss AG-AT4 is a versatile 4-channel audio mixing console designed for various applications including karaoke, meetings, home parties, and radio broadcasting. It features 2 mono and 1 stereo input, 48V phantom power, a 7-band stereo equalizer, 99 DSP effects, Bluetooth connectivity, and USB recording/playback capabilities.

Key Features

• 4 Input Channels: 2 Mono (XLR/6.35mm combo) + 1 Stereo (RCA).
• Separately Switchable +48V Phantom Power for each XLR input.
• 7-Band Stereo Graphic Equalizer for main output.
• 3-Band Channel Equalizer (High, Mid, Low) for individual channels.
• Bluetooth 5.0 Connectivity with a working distance of up to 6 meters.
• USB Recording & Playback: Supports FAT32 U-disks, MP3 recording, and MP3, WAV, WMA, FLAC playback.
• 99 Digital Signal Processing (DSP) Effects: Including Hall, Room, Delay, Echo, Reverb, Karaoke, Pitch, Chorus, Tremolo, Flange, and Auto Tune.
• Integrated MP3 Player with dedicated controls.
• Power Supply: 100V-240V AC.

Package Contents

Please check the box for the following items:

• Freeboss AG-AT4 Audio Mixer (1 unit)
• Power Cable (1 unit)
• English User Manual (1 unit)

Specifications

Setup and Connections

Before connecting any devices, ensure the mixer's power switch is in the "OFF" position.

1. Power Connection

Connect the supplied power cable to the IEC mains receptacle on the rear of the mixer and then to a suitable AC power outlet (100V-240V). Ensure the plug is easily accessible.

2. Input Connections

The AG-AT4 offers various input options:

• MIC/LINE 1 & 2 (Mono Inputs): These are balanced XLR-type and 6.35mm combo input jacks.

  

  • For dynamic microphones with XLR plugs, do NOT press the +48V phantom power button. Pressing it may damage the microphone.
  • For 48V condenser microphones with XLR plugs, PRESS the +48V phantom power button. The microphone will not work otherwise.
  • Using 6.35mm plugs for dynamic microphones may result in low sound.
  • Condenser microphones will not work with 6.35mm input.
• 3/4 L/R (Stereo Input): This is an RCA stereo input, suitable for devices like cassette decks or other line-level stereo sources.

3. Output Connections

• MAIN OUT L/R: These line-level XLR outputs connect to external equipment such as power amplifiers or active speakers.
• AUX OUT: A TS socket suitable for connecting to external effectors or equalizers.
• PHONE: A 1/4" TRS jack for connecting headphones.

Operating Instructions

1. Basic Channel Controls (MIC/LINE 1 & 2)

• GAIN Knob: Adjusts the input signal level. Turn until the PEAK indicator lights only occasionally on the highest input transients for optimal signal-to-noise ratio.
• EQUALIZER (HIGH, MID, LOW): These three-band knobs adjust the channel's high, mid, and low frequencies. Set to "0" for a flat response. Turn right to boost, left to attenuate.
• AUX Knob: Controls the level of the auxiliary output channel for that specific input.
• FX Knob: Adjusts the level of the built-in effects sent from this channel.
• PAN Knob: Determines the position of the channel signal within the stereo image (left/right balance).
• VOLUME Knob: Adjusts the output volume of the input channel. The PEAK light flashes if the signal is too loud.

2. Stereo Channel Controls (3/4)

• TOGGLE KEY (3/4 / USB): When released, the input is from the stereo RCA channel. When pressed, the input switches to the MP3 channel (USB/Bluetooth).
• EQUALIZER (HIGH, MID, LOW): Same function as mono channels.
• AUX Knob: Same function as mono channels.
• PAN Knob: Same function as mono channels.
• VOLUME Knob: Adjusts the output volume of the stereo channel.

3. Main Output Controls

• 7-BAND STEREO GRAPHIC EQUALIZER: Use the sliders to fine-tune the overall sound of the main mix to match room acoustics.
• MAIN L/R Faders: Adjust the overall main output volume.
• LEVEL METER: Displays the strength of the main output signal.
• AUX VOL Knob: Controls the overall volume of the AUX output jack.
• PHONE Knob: Controls the volume of the headphone output.

4. DSP Effects (99 Effects)

• Selecting Effects: Turn the PROGRAM knob to browse through the 99 DSP effects (displayed on the EFF DISPLAY). Press the knob to confirm your selection.
• Adjusting Effect Output:
  • Use the FX Knob on individual channels to send signal to the effect processor.
  • Adjust the main FX SEND Knob to control the overall effect level.
• Sending Effects to AUX: If you wish to include effects in the AUX output, adjust the EFF TO AUX Knob.

5. Bluetooth Function

1. Short press the MODE button in the MP3 ZONE until "BLUE" mode is selected. The Bluetooth symbol will flash, indicating it's waiting for connection.
2. On your mobile device, search for "MIX-MP3 BT" in your Bluetooth settings and connect. The Bluetooth symbol on the mixer will stop flashing once connected.
3. To adjust Bluetooth volume:
   • Ensure the 3/4 / USB TOGGLE KEY is pressed (MP3 channel selected).
   • Adjust the CH3/4 VOLUME Knob.
   • Adjust the main L MAIN R Faders.

6. USB Recording & Playback

• U-Disk Requirements: Use FAT32 formatted U-disks. NTFS format is not supported.
• Recording:
  1. Insert a FAT32 U-disk into the USB port.
  2. Short press the MODE button in the MP3 ZONE until "REC" mode is selected.
  3. Press the PLAY/PAUSE button to begin recording. The "USB" symbol will flash.
  4. Short press the MODE button again to stop and exit recording. Recorded files are in MP3 format.
• Playback:
  1. Insert a FAT32 U-disk containing audio files (MP3, WAV, WMA, FLAC) into the USB port.
  2. Ensure the 3/4 / USB TOGGLE KEY is pressed.
  3. Use the PLAY/PAUSE, PREV, and NEXT buttons in the MP3 ZONE to control playback.
  4. Adjust volume using the CH3/4 VOLUME Knob and main L MAIN R Faders.

Maintenance

• Cleaning: Use a soft, dry cloth to clean the mixer's surface. Avoid using abrasive cleaners, solvents, or waxes.
• Storage: Store the mixer in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity.
• Handling: Avoid dropping or subjecting the mixer to strong impacts.
• Power Off: Always turn off the mixer and disconnect it from the power source when not in use or before cleaning.
• Fuse Replacement: If the fuse needs replacement, ensure it is of the same type and rating as specified. Disconnect the power cord before attempting to replace the fuse.

Troubleshooting

User Tips

• Always start with all volume knobs and faders at their minimum position before powering on to prevent sudden loud noises.
• When adjusting GAIN, gradually increase it until the PEAK light flashes only occasionally, indicating an optimal signal level without clipping.
• Experiment with the 99 DSP effects to find the best sound for your specific application. Remember to adjust both the channel FX knob and the main FX SEND knob.
• For best Bluetooth performance, keep your paired device within line of sight of the mixer and minimize obstructions.

Warranty and Support

For detailed warranty information and further technical support, please refer to the official documentation provided with your product. A comprehensive user manual in PDF format is available for download or viewing:

View User Manual (PDF)

For any issues not covered in this manual, please contact the seller or manufacturer's customer support.