ALTO TrueMix 800FX Audio Mixer User Manual

Introduction

The Alto Professional TrueMix 800 FX is a compact, feature-packed audio mixer designed for a variety of applications including home recording, livestreaming, podcasting, and live performance. It offers a comprehensive set of inputs and outputs, built-in digital signal processing (DSP) effects, and convenient connectivity options like USB and Bluetooth.

Key features include:

• 8 analog channels with high headroom circuitry for minimal noise and clipping.
• 4 XLR Mic Input Channels with 48V phantom power for dynamic or condenser microphones.
• Balanced ¼” line inputs for instruments and other line-level signals.
• 2 Stereo Input Channels with dual balanced ¼” TRS inputs.
• 16 built-in DSP effects from Alesis, including chorus, flange, delays, and reverbs.
• Bluetooth channel with mix-minus technology for feedback-free phone pairing.
• Plug-and-play USB connectivity for Windows and macOS for recording.
• 4 headphone outputs, each with independent volume control.
• Two-band EQ on all channels with color-coded knobs for easy adjustment in low-light.
• Eight-segment LED VU meter for precise level monitoring.

What's in the Box

Upon unboxing your ALTO TrueMix 800FX, please ensure all the following items are present:

• TrueMix 800FX Audio Mixer
• Power Adapter
• USB Cable
• Quickstart Guide
• Registration Card
• Safety & Warranty Manual

Setup

Follow these steps to set up your TrueMix 800FX audio mixer:

1. Power Connection: Connect the included power adapter to the "DC IN 18V 1.2A" port on the rear of the mixer and plug it into a power outlet. Ensure the power switch is in the OFF position before connecting.

   Figure 1: ALTO TrueMix 800FX Mixer Overview

2. Input Connections:
   • Microphones: For dynamic or condenser microphones, use XLR cables to connect to the MIC inputs (Channels 1-4). Activate 48V phantom power if using condenser microphones by pressing the PHANTOM button.
   • Instruments/Line-Level Devices: Connect instruments (e.g., guitars, keyboards) or other line-level audio sources using ¼” TRS cables to the LINE inputs (Channels 1-4) or the STEREO 1/4" INs (Channels 5/6 and 7/8).
   • Bluetooth Devices: To stream audio wirelessly, press the BLUETOOTH pairing button. Once paired, you can stream audio from your smartphone or tablet.
   

   Figure 2: Input and Output Connections
3. Output Connections:
   • Main Output: Connect your powered speakers, amplifiers, or recording devices to the ¼” MAIN LINE OUT ports.
   • Headphones: Plug up to four headphones into the HEADPHONE OUTS. Each output has an independent level control.
   • USB Audio Interface: Connect the mixer to your Mac or PC using the included USB cable for plug-and-play recording and playback. The USB output sends a copy of the main outputs to your computer.

Operating the Mixer

Understanding the controls of your TrueMix 800FX is essential for optimal performance:

1. Channel Controls: Each input channel (1-8) features dedicated controls:
   • GAIN: Adjusts the input sensitivity for each channel.
   • EQ (HIGH/LOW): Two-band equalizer to shape the tone of your audio.
   • MON: Controls the level sent to the monitor output.
   • EFX: Adjusts the amount of signal sent to the built-in effects processor.
   • PAN: Positions the channel's signal within the stereo field (left to right).
   • VOLUME: Controls the overall output level of the channel.
   

   Figure 3: Channel Controls and Layout

2. Built-in DSP Effects: The mixer includes 16 Alesis DSP effects.
   • Use the PROGRAM knob to select from various effects like chorus, flange, delays, and reverbs.
   • The VARIATION knob adjusts parameters of the selected effect.
   • The EFX RETURN (TO MAIN) knob controls the overall level of the effects sent to the main mix.
   • Press EFX MUTE to temporarily disable the effects.
   

   Figure 4: Alesis DSP Effects Section

3. Monitoring and Main Output:
   • The MAIN OUT LEVEL knob controls the overall volume of the main mix.
   • The eight-segment LED VU meter provides visual feedback on your main output levels.
   • Adjust individual headphone volumes using their respective knobs in the HEADPHONE/CONTROL ROOM section.

Maintenance

To ensure the longevity and optimal performance of your ALTO TrueMix 800FX mixer, follow these maintenance guidelines:

• Cleaning: Regularly wipe the mixer's surface with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or strong chemicals, as they may damage the finish or internal components.
• Storage: When not in use, store the mixer in a cool, dry place away from direct sunlight, excessive heat, or moisture. If transporting, use appropriate padding or a carrying case to prevent physical damage.
• Ventilation: Ensure proper ventilation around the mixer to prevent overheating. Do not block any ventilation openings.
• Cable Management: Keep cables organized and untangled to prevent strain on ports and accidental disconnections.
• Power Supply: Always use the original power adapter provided with the unit. Disconnect the power supply during electrical storms or when unused for long periods.

Troubleshooting

If you encounter issues with your TrueMix 800FX, refer to the following common troubleshooting tips:

• No Sound Output:
  • Check all cable connections (inputs, main outputs, headphones).
  • Ensure the mixer is powered on and the power adapter is securely connected.
  • Verify that channel volume knobs, main output level, and headphone volume knobs are turned up.
  • Check if any MUTE buttons are engaged.
• Distorted Sound:
  • Reduce the GAIN knob for the input channel.
  • Check the PEAK LED indicators on each channel; if they are consistently lit, the input signal is too hot.
  • Lower the MAIN OUT LEVEL if the distortion is at the output stage.
• No Bluetooth Connection:
  • Ensure the BLUETOOTH button is pressed and flashing, indicating pairing mode.
  • Make sure your device's Bluetooth is enabled and it's within range.
  • Forget the device on your smartphone/tablet and try pairing again.
• No Phantom Power:
  • Verify that the PHANTOM button is pressed and its indicator light is on.
  • Ensure you are using an XLR cable for your condenser microphone.

Specifications

Warranty and Support

For detailed warranty information and technical support, please refer to the "Safety & Warranty Manual" included in your product packaging. You can also visit the official ALTO website or their Amazon Brand Store for additional resources and contact information.

Visit the ALTO Brand Store