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Table of Contents
Related Manuals for Focusrite Scarlett 18i20
Summary of Contents for Focusrite Scarlett 18i20
- Page 1 User Guide www.focusrite.com Version 1.0...
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Page 2: Table Of Contents
Using the Scarlett 18i20 as a stand-alone mixer........ -
Page 3: Overview
Features The Scarlett 18i20 audio interface caters for a total of 18 inputs and 20 outputs, and provides the means to connect microphones, musical instruments, line level audio signals and digital audio signals in both ADAT and S/PDIF formats to a computer running compatible versions of macOS or Windows via one of the computer’s USB ports. -
Page 4: Box Contents
Although all inputs and outputs on the Scarlett 18i20 are routed directly to and from your DAW for recording and playback, you can configure the routing within your DAW in order to meet your precise needs. -
Page 5: Rackmounting The Scarlett 18I20
Rackmounting the Scarlett 18i20 The Scarlett 18i20 can be mounted in a standard 19” equipment rack. In order to do this, the rack ears supplied with the unit need first to be fitted. To fit the rack ears: • Remove the rubber “Focusrite” inserts from the sides of the case. This will reveal three tapped... -
Page 6: Getting Started
With the Third Generation, Scarlett interfaces introduce a new, faster way of getting up and running, using the Scarlett Quick Start tool. All you need to do is connect your Scarlett 18i20 to your computer. Once connected, you will see that the device is recognised by your PC or Mac and the Quick Start tool will guide you through the process from there. - Page 7 Double-click on the “Click Here to Get Started.url” icon. This will redirect you to the Focusrite website, where we recommend that you register your device: Click on “Let’s get you started”, and you’ll be presented with a form which will be partly prefilled for you automatically.
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Page 8: Windows Only
Windows only: On connecting your Scarlett 18i20 to your PC, a Scarlett icon will appear on the desktop: (Note that the drive letter may be something other than D:, depending on what other devices you have connected to your PC). - Page 9 Your OS should automatically switch the computer’s default audio inputs and outputs to be the Sound Settings Scarlett 18i20. To verify this, right click on the Sound icon on the taskbar and select and set the Scarlett as the Input and Output Device.
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Page 10: All Users
48 kHz. Once Focusrite Control is installed on your computer, you can work at sample rates up to 192 kHz. If you decide not to download and install Focusrite Control immediately, it can be downloaded at any time from: https://customer.focusrite.com/support/downloads. -
Page 11: Hardware Features
DAW by 10 dB; use when the input source has a particularly high level. ‘PAD’ illuminates red when active. Note that PAD may also be selected from Focusrite Control. Gain 3 to 8 – adjust the input gain for the signals at Inputs 3 to 8 respectively. (Note that the... - Page 12 18 dB, while MUTE turns the outputs off. By default, these switches affect the MAIN monitor outputs 1 and 2, but may be configured in Focusrite Control to act on any of the analogue outputs. The switches each have an associated LED (DIM: yellow, MUTE: red) indicating that the function is selected.
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Page 13: Rear Panel
Channel Listing tables in the Appendix section for more details. 24. WORD CLOCK OUT – a BNC connector carrying the Scarlett 18i20’s word clock; this may be used to synchronise other digital audio equipment forming part of the recording system. The source of sample clock synchronisation used by the Scarlett 18i20 is selected from Focusrite Control. -
Page 14: Connecting Your Scarlett 18I20
– see below. USB Port Types: The Scarlett 18i20 has a single Type C USB 2.0 port (on the rear panel). Once the software installation is complete, simply connect the Scarlett 18i20 to your computer; if your computer has a Type A USB port we recommend you use the Type A-to-Type C USB cable provided with the unit. -
Page 15: Audio Setup In Your Daw
Mac-based DAW that uses Core Audio. After following the Getting Started procedure described on page 6, you can start using the Scarlett 18i20 with the DAW of your choice. To allow you to get started if you do not already have a DAW application installed on your computer, both Pro Tools | First and Ableton Live Lite are included;... - Page 16 Once the Scarlett 18i20 is set as the preferred Audio Device* in your DAW, all 18 inputs and 20 outputs will appear in your DAW’s Audio I/O preferences (note however that Ableton Live Lite is limited to a maximum of four simultaneous mono input channels and four simultaneous mono output channels).
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Page 17: Examples Of Usage
The connection to the PC or Mac running DAW software is via the USB cable supplied. This will carry all the input and output signals between the DAW and the Scarlett 18i20. Once the audio setup is correctly configured in the DAW, each input source will be automatically routed to its own DAW track... -
Page 18: Low Latency Monitoring
In the example, each of the band members is receiving his/her own monitor mix, because they each have their “own” Scarlett 18i20 output. Focusrite Control lets you define up to eight separate mixes, and these mixes may include previously recorded DAW tracks as well the current input signals. -
Page 19: Connecting Scarlett 18I20 To Loudspeakers
Connecting Scarlett 18i20 to loudspeakers The 1/4” jack MAIN outputs on the rear panel (Line Outputs 1 and 2) will normally be used to drive your primary monitoring speakers. Self-powered monitors incorporate internal amplifiers with a volume control, and may be connected directly. Passive loudspeakers will require a separate stereo amplifier;... - Page 20 ALT button, or by clicking on the corresponding on-screen button in Focusrite Control. When ALT is active, the main mix output will be fed to the ALT outputs instead of the MAIN, and the green ALT LED will light to confirm this.
- Page 21 Working with surround sound Because the Scarlett 18i20 is equipped with ten line outputs, it is ideally suited for use when working in multichannel sound formats – LCRS, 5.1 surround or 7.1 surround, for example. In order to route each channel to the correct output you will need to route the DAW outputs to the Line Outputs in Focusrite Control (e.g.
- Page 22 The example below shows how you would connect the six loudspeakers in a 5.1 surround monitoring arrangement. Left (L) Right (R) Centre (C) (Sub Bass) LFE Rear Left (RL) Rear Right (RR)
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Page 23: Using The Adat Connection
At 44.1/48 kHz, the Scarlett OctoPre’s ADAT OUT 1-8 port is connected to the Scarlett 18i20 OPTICAL IN port marked 48 – 1-8 with a single TOSLINK optical cable. To synchronise the two devices over ADAT, set the clock source of the Scarlett OctoPre to Internal and that of the Scarlett 18i20 (via ADAT Focusrite Control) to . -
Page 24: Using The Scarlett 18I20 As A Stand-Alone Mixer
In the example illustrated, three stereo keyboards are connected to the rear panel inputs of the Scarlett 18i20; Outputs 3 and 4 go to the main PA system. The performer can adjust the gain for the individual keyboards from the front panel; he/she can also adjust the overall level of the... -
Page 25: Focusrite Control
Focusrite Control in full detail, together with examples of application. To open Focusrite Control: Installing Focusrite Control on your computer will place an FC icon on the dock or desktop. Click the icon to launch Focusrite Control. Assuming that your Scarlett interface is connected to your computer with the USB cable, the Focusrite Control GUI (Graphical User Interface) will appear as shown below (Mac version illustrated). -
Page 26: Channel Listing Tables
Digital I/O Modes The Scarlett 18i20 supports three Digital I/O modes: these are selected from the Device Settings pane of Focusrite Control. The modes determine how the audio inputs and outputs are mapped to the optical (ADAT) ports and the S/PDIF input and output coaxial (RCA) sockets. - Page 27 Mode 3: Dual ADAT Select this mode when you need more than four ADAT input and/or output channels when working at 88.2/96 kHz sample rate. Sample rate (kHz) Digital port 44 .1/48 88 .2/96 176 .4/192 S/PDIF IN Inputs OPTICAL IN 1 ADAT 1-8 ADAT 1-4 OPTICAL IN 2...
- Page 28 The tables below list the how the 18i20’s inputs and outputs appear in Focusrite Control for each of the three Optical I/O modes, at each of the three sample rate pairs. Note that the first digit in the entries relating to the ADAT channels refers to the port in use: so “ADAT 1.1” to “ADAT 1.4” are ADAT Chs 1 to 4 at the right-hand port of each pair, while “ADAT 2.1”...
- Page 29 ADAT 1. 4 ADAT 1. 4 ADAT 2.2 Output 17 ADAT 2.1 ADAT 2.3 Output 18 ADAT 2.2 ADAT 2.4 Output 19 Output 20 *In order to obtain eight ADAT output channels, please select Focusrite Control’s DUAL ADAT OUTPUT preset.
- Page 30 At 176 .4 kHz and 192 kHz sample rates: DIGITAL I/O MODE DIGITAL I/O MODE INPUTS OUTPUTS COAXIAL OPTICAL DUAL COAXIAL OPTICAL DUAL ADAT S/PDIF S/PDIF ADAT S/PDIF S/PDIF Input 1 Input 1 Input 1 Input 1 Output 1 Output 1 Output 1 Output 1 Input 2...
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Page 31: Specifications
Configuration Inputs 18: analogue (8), ADAT (8), S/PDIF (2) Outputs 20: analogue (10), ADAT (8), S/PDIF (2) Fully assignable 18-in/10-out software mixer (Focusrite Mixer Control) Supported sample rates 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz... - Page 32 < 0.03% (minimum gain, -1 dBFS input with 22 Hz/22 kHz THD+N bandpass filter) +12.5 dBu (no PAD); +14 dBu (PAD selected); measured at Maximum Input Level minimum gain Gain Range 56 dB Input Impedance 1.5 Mohms Line Outputs 1 to 10 Dynamic Range 108.5 dB (A-weighted) Maximum Output Level (0 dBFS)
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Page 33: Physical And Electrical Characteristics
4 x TOSLINK optical connectors; 8 channels @ 44.1/48 kHz or 4 Optical I/O @ 88.2/96 kHz S/PDIF I/O 2 x phono (RCA) or via Optical I/O (selected via Focusrite Control) Word clock output BNC connector 1 x USB 2.0 Type C connector... - Page 34 Front Panel indicators USB/Power Green LED Phantom power 2 x red LEDs (Chs 1-4, 5-8) Instrument mode 2 x red LEDs (Chs 1 & 2) AIR mode 8 x yellow LEDs Pad active 8 x green LEDs MIDI data received Green LED Lock indicator Green LED...
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Page 35: Troubleshooting
Your Scarlett 18i20 has a two-year warranty, valid anywhere in the world, against manufacturing defects. Full Terms and Conditions of the Warranty can be found at https://focusrite.com/warranty. Focusrite is a registered trade mark and Scarlett 18i20 is a trade mark of Focusrite Audio Engineering Limited.
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