MOTU UltraLite-mk5 18x22 USB Audio Interface User Manual

1. Introduction

The MOTU UltraLite-mk5 is a versatile 18x22 USB audio interface designed for Mac, Windows, and iOS devices. It provides high-quality audio conversion, extensive connectivity, and powerful DSP-driven mixing and effects for studio and live applications.

Figure 1.1: Front view of the MOTU UltraLite-mk5 audio interface, showcasing its compact design and front panel controls.

Key Features:

• 18 x 22 USB Audio Interface: Features 2 combo XLR/TRS mic/line/hi-Z guitar inputs, 6 analog inputs, 10 analog outputs, headphone output, S/PDIF digital I/O, and 8-channel optical I/O, totaling 40 simultaneous audio channels.
• Superb Analog Quality with Ultra-Low Latency: Analog outputs deliver 125 dB dynamic range. Optimized drivers ensure stable performance and industry-leading low latency.
• DSP-Driven Monitor Mixing: Mix live inputs to any analog output pair. Create up to six separate, unique mix busses, including computer channels in each mix.
• On-Board Effects: Apply reverb, 4-channel parametric EQ, and dynamics processing to inputs and bus mixes directly on the hardware.
• Universal Connectivity: Connects to any computer via hi-speed USB 2.0 (audio class compliant, compatible with USB 3.0) and iOS devices. Compatible with all major audio software.
• Comprehensive Metering: A high-resolution OLED display provides detailed metering for all analog I/O, allowing for quick signal activity monitoring.
• CueMix 5 App: Control mixing and settings remotely from your Mac, PC, or iOS device.
• Performer Lite Software: Includes workstation software with over 100 instruments, dozens of effects, and 6 GB of loops.

2. Setup

2.1 Unpacking and Inspection

Carefully remove the UltraLite-mk5 from its packaging. Verify that all components are present, including the audio interface, USB-C cable, and external power supply. Inspect the unit for any signs of damage during transit.

2.2 Driver Installation

1. Download Drivers: Visit the official MOTU website (motu.com/download) and download the latest drivers and firmware for your operating system (macOS, Windows, or iOS).
2. Install Software: Follow the on-screen instructions to install the drivers and the CueMix 5 application. Restart your computer if prompted.

2.3 Hardware Connection

1. Power Connection: Connect the included external power supply to the 15V DC input on the rear panel of the UltraLite-mk5. Plug the power supply into an appropriate electrical outlet.
2. USB Connection: Connect the UltraLite-mk5 to your computer (Mac or Windows) or iOS device using the supplied USB-C cable. The device is compatible with USB 2.0 and USB 3.0 ports.
3. Audio Connections: Connect your microphones, instruments, line-level devices, and studio monitors to the appropriate inputs and outputs on the UltraLite-mk5. Refer to the rear panel diagram for specific port locations.

Figure 2.1: The UltraLite-mk5 connected to a laptop, demonstrating a typical setup for computer-based recording.

Figure 2.2: Diagram illustrating the front and rear panels of the UltraLite-mk5, detailing all input and output connections.

3. Operation

3.1 Front Panel Controls

• Mic/Line/Inst Inputs (1-2): Combo XLR/TRS jacks for connecting microphones, line-level sources, or high-impedance instruments like guitars.
• PAD Buttons: Attenuate input signal by 20dB for high-level sources.
• 48V Buttons: Engage +48V phantom power for condenser microphones.
• Main Vol: Controls the overall output level of the main analog outputs.
• Phones: 1/4-inch stereo headphone output with dedicated volume control.
• Mic Gain (1-2): Adjusts the input gain for microphone/instrument inputs.
• OLED Display: Provides real-time metering for all inputs and outputs, along with status indicators for sample rate, clock source, and MIDI activity.

Figure 3.1: A close-up view of the UltraLite-mk5's front panel, showing connected cables and the OLED display.

3.2 Rear Panel Connections

• Line Inputs (3-8): 1/4-inch TRS balanced inputs for line-level devices.
• Main Outputs (1-2): 1/4-inch TRS balanced outputs for connecting to studio monitors.
• Line Outputs (3-10): Additional 1/4-inch TRS balanced outputs for routing to other gear.
• Optical I/O: ADAT optical digital input and output for expanding channels.
• S/PDIF I/O: Coaxial digital input and output.
• MIDI I/O: 5-pin DIN MIDI In and Out ports for connecting MIDI controllers and devices.
• USB-C: Connection to computer or iOS device.
• 15V DC: Power input.

Figure 3.2: A comprehensive diagram illustrating various connection possibilities with the UltraLite-mk5, including guitars, MIDI devices, and speakers.

3.3 CueMix 5 Software

The CueMix 5 application provides comprehensive control over the UltraLite-mk5's internal mixer, routing, and DSP effects. It allows you to create custom monitor mixes, apply reverb, EQ, and dynamics processing to inputs and outputs, and manage all device settings from your computer or iOS device.

Figure 3.3: The CueMix 5 application interface displayed on a tablet, demonstrating remote control capabilities.

3.4 Using with Digital Audio Workstations (DAWs)

Once drivers are installed, the UltraLite-mk5 will appear as an available audio device in your DAW's audio settings. Select it as your input and output device to begin recording and playback. The included Performer Lite software is a fully functional DAW that integrates seamlessly with the UltraLite-mk5.

Figure 3.4: An overview of the software bundle included with the UltraLite-mk5, featuring Performer Lite and various effects and instruments.

4. Maintenance

4.1 Cleaning

To maintain the appearance and functionality of your UltraLite-mk5, regularly wipe the exterior with a soft, dry cloth. Avoid using abrasive cleaners or solvents, which can damage the finish. Ensure the unit is powered off and disconnected from all cables before cleaning.

4.2 Firmware Updates

MOTU periodically releases firmware updates to improve performance, add features, or address issues. Check the official MOTU website regularly for the latest firmware and follow the provided instructions for updating your device.

5. Troubleshooting

5.1 No Sound Output

• Verify that the UltraLite-mk5 is selected as the default audio output device in your computer's sound settings and your DAW.
• Check all cable connections (USB, power, speaker cables).
• Ensure the Main Vol knob on the front panel is turned up.
• Check the CueMix 5 software for correct routing and mix levels.

5.2 Input Signal Issues

• Confirm that the correct input type (Mic, Line, Inst) is selected in CueMix 5.
• Adjust the Mic Gain knob for the active input.
• If using a condenser microphone, ensure +48V phantom power is enabled.
• If the signal is too hot, engage the PAD button.

5.3 Latency Problems

• Reduce the buffer size in your DAW's audio settings. Note that very low buffer sizes may strain your computer's CPU.
• Ensure you are using the latest drivers from the MOTU website.
• Close other applications that may be consuming system resources.

Figure 5.1: A visual representation of the UltraLite-mk5's low latency performance, highlighting its 2.4 ms Round Trip Latency (RTL) via Hi-Speed USB.

5.4 Further Assistance

If you encounter issues not covered here, please refer to the comprehensive online documentation available on the MOTU website or contact MOTU technical support for assistance.

6. Specifications

7. Warranty and Support

7.1 Product Warranty

The MOTU UltraLite-mk5 comes with a limited manufacturer's warranty. For detailed information regarding warranty coverage, terms, and conditions, please refer to the warranty card included with your product or visit the official MOTU website.

7.2 Technical Support

For technical assistance, product registration, or to access additional resources such as FAQs and software downloads, please visit the MOTU support page at motu.com/support. You can also contact their customer service directly through the contact information provided on their website.