Focusrite Scarlett 18i8 (2nd Gen) USB Audio Interface Instruction Manual

Introduction

The Focusrite Scarlett 18i8 (2nd Gen) is a USB audio interface designed for musicians, producers, and small bands. It facilitates simultaneous recording of audio from various sources, including drums, guitars, keyboards, and vocals, directly to a computer. The interface features four Scarlett mic preamps, low-latency performance, and high-quality digital conversion. It offers a comprehensive set of inputs and outputs, including additional line inputs, digital I/O, two main monitor outputs, and two independent headphone outputs. The ADAT input allows for expansion with eight extra mic preamps for larger recording setups. The Scarlett 18i8 is compatible with major Digital Audio Workstations (DAWs) on both Mac and PC platforms.

Package Contents

Before proceeding with setup, ensure all components are present in the package:

• Focusrite Scarlett 18i8 (2nd Gen) Audio Interface
• USB Cable
• Power Supply Unit

Image: Included accessories for the Scarlett 18i8, featuring the USB cable and power adapter.

Setup

1. Driver Installation: Before connecting the hardware, download and install the latest drivers and Focusrite Control software from the official Focusrite website. This software is essential for managing the interface's settings and routing.
2. Power Connection: Connect the provided power supply unit to the '12V DC' input on the rear panel of the Scarlett 18i8 and plug it into a power outlet.
3. USB Connection: Connect the Scarlett 18i8 to your computer using the supplied USB cable. The interface is compatible with USB 2.0 ports.
4. Monitor Connection: Connect your studio monitors to the 'MONITOR OUTPUTS' (1-2) on the rear panel using appropriate cables.
5. Input Connections: Connect microphones, instruments, or line-level devices to the appropriate input jacks on the front and rear panels.

Image: Front panel of the Scarlett 18i8, showing combo inputs, gain controls, and monitor/headphone outputs.

Image: Rear panel of the Scarlett 18i8, displaying line inputs, monitor outputs, MIDI I/O, S/PDIF, Optical Input, and USB port.

Operating Instructions

Front Panel Controls

• Input Channels (1-4): Each channel features a combo XLR/TRS jack for connecting microphones or instruments.
• GAIN Knobs: Adjust the input level for each of the four mic preamps. Ensure levels are set appropriately to avoid clipping.
• INST Buttons: Engage for instrument-level signals (e.g., guitar, bass) connected to the combo jacks.
• PAD Buttons: Attenuates the input signal by 10dB, useful for very loud sources to prevent clipping.
• 48V (Phantom Power) Buttons: Activates 48V phantom power for condenser microphones. Use only when required by your microphone.
• MONITOR Knob: Controls the overall output level to your main studio monitors.
• Headphone Outputs (1-2): Two independent 1/4-inch stereo headphone jacks with dedicated volume controls.
• MUTE Button: Mutes the main monitor outputs.
• MIDI Indicators: Lights up to show MIDI activity.

Rear Panel Connections

• LINE INPUTS (5-8): Four additional 1/4-inch TRS line inputs for connecting line-level devices.
• MONITOR OUTPUTS (1-2): Balanced 1/4-inch TRS outputs for connecting to studio monitors.
• MIDI IN/OUT: 5-pin DIN connectors for connecting MIDI keyboards, controllers, or other MIDI devices.
• S/PDIF IN/OUT: RCA coaxial connectors for digital audio input and output.
• OPTICAL INPUT (ADAT): TOSLINK connector for expanding the number of available inputs with an ADAT-compatible device (e.g., an 8-channel mic preamp).
• USB Port: Connects the interface to your computer.
• Power Input: Connects to the external 12V DC power supply.

Key Features

• Direct Monitoring: Enables listening to input signals directly through the interface with near-zero latency, bypassing the computer's processing. This is crucial for real-time performance and recording.
• Air Mode: This feature, accessible via Focusrite Control software, enhances the quality of your microphone by emulating the sound of Focusrite's classic ISA mic preamps, adding clarity and presence.
• Software Integration: The Scarlett 18i8 comes bundled with software including Pro Tools | First, Ableton Live Lite, Focusrite Red Plug-In Suite, and Softube Time and Tone Plug-In Bundle, providing a comprehensive suite for music production.

Maintenance

• Cleaning: Use a soft, dry cloth to clean the exterior of the interface. Avoid abrasive cleaners or solvents.
• Environmental Conditions: Operate and store the device in a dry environment, away from direct sunlight, extreme temperatures, and excessive dust.
• Cable Management: Ensure all cables are connected securely and are not under strain to prevent damage to the ports or cables.

Troubleshooting

• No Sound/Distorted Audio: Check all cable connections (USB, power, audio inputs/outputs). Verify gain levels on the interface and within your DAW. Ensure the correct audio device is selected in your computer's sound settings and DAW.
• Latency Issues: Update your Focusrite drivers to the latest version. Adjust buffer size settings in your DAW (lower buffer size reduces latency but requires more CPU power). Utilize the Direct Monitoring feature for real-time input monitoring.
• Device Not Recognized: Reinstall Focusrite drivers. Try a different USB port or cable. Ensure the device is powered on.

Specifications

Warranty and Support

The Focusrite Scarlett 18i8 (2nd Gen) is protected by a Two-Year Warranty. Focusrite offers comprehensive technical support to assist with any product-related inquiries or issues. For further assistance, please visit the official Focusrite support website or consult the documentation provided with your product.

For the latest support resources and contact information, please visit: focusrite.com/support