Focusrite Clarett 2Pre Manual de usuario

User Guide

focusrite.com

Version 2

FFFA001255-02

TABLE OF CONTENTS

OVERVIEW..................................................................... 3

Introduction .................................................................3

Features ....................................................................4

Box Contents ................................................................4

System Requirements .........................................................4

Getting Started................................................................. 5

Software Installation ..........................................................5

Hardware Features ...........................................................6

Front Panel ....................................................................6

Rear Panel ....................................................................7

Connecting your Clarett 2Pre ...................................................8

Computer audio setup ...........................................................8

Audio Setup in your DAW.......................................................8

Connecting Clarett 2Pre to loudspeakers............................................9

Examples of Usage.............................................................11

1. Recording a solo artist ......................................................11

2. Using the optical connections ................................................13

3. Using the Clarett 2Pre as an on-stage mic pre-amp ..............................14

4. Loopback Recording ........................................................14

FOCUSRITE CONTROL - OVERVIEW...............................................15

CLARETT 2PRE TECHNICAL SPECIFICATIONS......................................16

Performance Specications ...................................................16

Physical and Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

TROUBLESHOOTING ...........................................................18

OVERVIEW

WARNING: Excessive sound pressure levels from earphones and headphones can cause

hearing loss.

WARNING: This equipment must only be connected to Thunderbolt™ ports.

Introduction

Thank you for purchasing this Clarett 2Pre, one of the family of Focusrite professional Thunderbolt™

audio interfaces incorporating newly-designed, high quality Clarett analogue pre-ampliers with

the unique AIR function. In conjunction with the Focusrite Control application, you now have a highly

versatile and professional solution for routing high quality audio to and from your computer recording

system, with extremely low latency.

You can also use the Clarett 2Pre as a “stand-alone” interface on-stage, bringing the benets of

Focusrite’s high-quality analogue mic pres to your live performance.

This User Guide provides a detailed explanation of the hardware to help you achieve a thorough

understanding of the product’s operational features. We recommend you take the time to read

through the Guide, whether you’re new to computer-based recording or a more experienced user, so

you are fully aware of all the possibilities the Clarett 2Pre has to offer.

If either User Guide does not have the information you need, please go to support.focusrite.com,

where you can nd articles and tutorials beyond the scope of this user guide.

IMPORTANT: As well as this User Guide, you will need the Focusrite Control

Software Guide which can be downloaded from

focusrite.com/downloads after registering your product.

This contains full details of Focusrite Control, the software application designed

specically for use with the Focusrite Clarett range of interfaces.

Features

The Clarett 2Pre hardware interface provides the means for connecting microphones, musical

instruments, line level audio signals and digital audio signals to a computer through the computer’s

Thunderbolt™ port. The signals at the physical inputs can be routed to your audio recording

software / digital audio workstation (referred to throughout this user guide as the “DAW”); similarly,

the outputs from the DAW can be congured to appear at the unit’s physical outputs.

Audio sources – mics, instruments, etc., can be recorded into your DAW and then played back

from there through ampliers and speakers, powered monitors, headphones, a mixer or any other

analogue or digital audio equipment you wish to use. Although all inputs and outputs on the Clarett

2Pre are routed directly to and from your DAW for recording and playback, you can congure the

routing within your DAW, or within the Focusrite Control application, in order to meet your precise

needs.

The Clarett 2Pre also has connectors for sending and receiving MIDI data; this lets you use it as a

MIDI interface between your computer and other items of MIDI equipment in your system.

An important feature of the Clarett 2Pre is the new design of analogue preamplier. In addition

to their class-leading dynamic range and ability to provide all the gain you’re ever likely to need,

the circuitry now includes an exciting new AIR function. Individually selectable on each channel,

AIR subtly modies the pre-amp’s frequency response to model the impedance and resonance

characteristics of Focusrite’s classic transformer-based ISA mic preamps. When recording with

good quality microphones, you will notice an enhanced clarity and denition in the important mid to

high frequency range, just where it is most needed for vocals and many acoustic instruments.

The accompanying software application, Focusrite Control, is designed to require a minimal amount

of user interaction, letting you easily congure the Clarett 2Pre with signal routings appropriate for

the most common recording tasks. For more complex situations, it provides extensive routing and

monitoring options, as well as the ability to control global hardware settings such as sample rate

and synchronisation.

All inputs on the Clarett 2Pre are routed directly to your DAW software for recording, but Focusrite

Control also allows you to route these signals internally within the device to the outputs so you can

monitor the audio signals with ultra-low latency - before they arrive at your DAW, should you need

to do so.

Box Contents

Along with your Clarett 2Pre you should have:

• External 12 V DC mains Power Supply Unit (PSU)

• Important Information, with codes for accessing the following on-line resources:

- Focusrite Red 2/Red 3 Plug-in Suite

- Optional bundled software.

System Requirements

IMPORTANT – Please visit the following link for up-to-date information on computer and

operating system compatibility for all Clarett products:

support.focusrite.com

GETTING STARTED

IMPORTANT: Please ensure you install the Focusrite Control before connecting the

interface to your computer.

Software Installation

All software required by the Clarett 2Pre, including several powerful and useful extras, is available

for download from the Focusrite website (focusrite.com/downloads). The Important Information

provided with your Clarett 2Pre contains validation codes if you wish to register your Clarett and

access the optional bundled software.

1. Using your usual browser, go to focusrite.com/register/.

2. Follow the on-screen instructions, entering the “Bundle Code” into the form where prompted.

Your Bundle Code can be found on the Important Information packed with the unit.

3. You will then be able to access the “My Products” page, where the software products to which your

registration entitles you are available for download, complete with activation codes where applicable.

4. Download and install the Clarett 2Pre drivers. Follow all on-screen instructions.

5. When the installation is complete, you will be prompted to restart your computer.

6. After restart, connect the Clarett 2Pre to your computer with a Thunderbolt cable.

7. If you are having trouble getting started please watch our video guide here -

focusrite.com/get-started

Hardware Features

Front Panel

5 5

4 2

1 3 3 8 9101

The front panel includes all the input gain and monitoring controls as well as two of the input

connectors for Mic, Line and Instrument signals.

1. INPUTS1&2–“ComboXLR”inputsocketsforeachchannel-connectmicrophones,instruments

(e.g., guitar), or line level signals via XLR or ¼” jacks as appropriate. Either TRS (balanced) or

TS (unbalanced) jack plugs can be used for instruments or line level signals.

2. 48V – two switches enabling 48 V phantom power at the XLR contacts of the combo connectors

for mic inputs 1 and 2 respectively. The switches each have an associated red LED indicating

phantom power is selected.

3. Gain 1and 2– two rotary controls: adjust the input gain for the signals at Inputs 1 and 2

respectively. The gain controls have concentric bi-colour LED ‘halos’ to conrm signal level:

green indicates an input level of at least -24 dBFS (i.e., ‘signal present’), the ring then turns

red when signal level reaches 0 dBFS.

4. INST – two red LEDs which illuminate when INST mode is selected for the jack contacts of

Inputs 1 or 2 from Focusrite Control software. When INST is selected, the gain range and input

impedance are altered (relative to LINE), and the input is made unbalanced. This optimises

it for the direct connection of instruments via a 2-pole (TS) jack plug. When INST is off, the

inputs are suitable for the connection of line level signals. Line level signals may be connected

either in balanced form via a 3-pole (TRS) jack or unbalanced, via a 2-pole (TS) jack.

5. AIR – two yellow LEDs which illuminate when the AIR function is selected for each input

from Focusrite Control. AIR modies the frequency response of the input stage to model the

classic, transformer-based Focusrite ISA mic preamps.

6. (Thunderbolt active) – a green LED which illuminates when the unit has established a

connection with the computer to which it is connected.

7. (Locked) – a green LED which conrms clock synchronisation, either to the Clarett 8Pre’s

internal clock or to an external digital input.

8. MONITOR – main monitor output level control – this control will normally control the level

at the main monitor outputs on the rear panel, but can be congured in Focusrite Control to

adjust the level of any of the unit’s four analogue outputs.

9. (Headphones) – connect a pair of stereo headphones at the ¼” TRS jack socket below

the control. The headphone output always carries the signals currently routed to analogue

outputs 3 and 4 (as a stereo pair) in Focusrite Control.

10. POWER – green LED conrming DC power is connected.

Rear Panel

25 4

36 6

1. LINE OUTPUTS 1 to 4– four balanced analogue line outputs on ¼” jack sockets; use TRS jacks

for a balanced connection or TS jacks for unbalanced. Line Outputs 1 and 2 will generally be

used for driving the main L and R speakers of your monitoring system, while Outputs 3 and

4 can be used for driving alternative speakers (i.e., mideld, neareld, etc.) or to send audio

to outboard FX processors. The signals routed to all the outputs may be dened in Focusrite

Control.

2. OPTICAL INPUT – a TOSLINK connector carrying eight channels of digital audio in ADAT

format at 44.1/48 kHz sample rate, four channels at 88.2/96 kHz or two channels at

176.4/192 kHz. These are additional inputs to the Clarett 2Pre.

3. – Thunderbolt™ connector; connect the Clarett 2Pre to your computer with a suitable

Thunderbolt™ cable.

4. MIDI IN and MIDI OUT – standard 5-pin DIN sockets for connection of external MIDI equipment,

allowing MIDI data to/from your computer to be received and distributed to additional MIDI

devices.

5. External DC power input – power the Clarett 2Pre via the separate AC adaptor (PSU) supplied.

The PSU is a 12 V DC unit rated at 1.5 A.

6. Power On/Off switch.

7. Kensington security slot– secure your Clarett 2Pre to a suitable structure if desired. Please

see kensington.com for further information on how to use this feature.

Connecting your Clarett 2Pre

IMPORTANT: Before you connect the Clarett 2Pre to your computer, please complete the

software installation according to the instructions on page 5.

This will ensure the hardware uses the correct drivers, and will

prevent unexpected behaviour.

The Clarett 2Pre must be powered using the supplied AC adaptor (PSU). Plug the connector on the on

the PSU into the rear panel power socket and turn the unit on with the power switch.

The Clarett 2Pre has a Thunderbolt™ port (on the rear panel). Once the software installation is

complete, connect the Clarett 2Pre to your computer using a Thunderbolt™ cable.

Computer audio setup

Your OS should automatically select the Clarett 2Pre as the default audio device. You can check this

selection has been made correctly, if you wish. Details of how to do this on various operating systems

can be found at focusrite.com/get-started/clarett-2Pre.

Audio Setup in your DAW

After installing the drivers and connecting the hardware, you can start using the Clarett 2Pre with

the DAW of your choice.

Please note - your DAW may not automatically select the Clarett 2Pre as its default I/O device. In

this case, you must manually select the driver on your DAW’s Audio Setup* page, and select the

Focusrite Thunderbolt driver. Please refer to your DAW’s documentation (or Help les) if you are

unsure where to select the Clarett 2Pre as your audio device.

* Typical name – page names may vary with DAW

Connecting Clarett 2Pre to loudspeakers

The 1/4” jack LINE OUTPUTS 1 and 2on the rear panel will normally be used to drive monitoring

speakers. Self-powered monitors (e.g., typical computer speakers) have internal ampliers, and

may be connected directly. Passive loudspeakers will require a separate stereo amplier; in this

case, the outputs should be connected to the amplier’s inputs.

Professional equipment will generally have balanced inputs. If your amplier or powered speakers

have balanced inputs, use 3-pole (TRS) 1/4” jacks to connect them to Clarett 2Pre.

All the line output connectors are 3-pole (TRS) ¼” jack sockets, and are electronically balanced.

Typical consumer (hi-) ampliers and small powered monitors will have unbalanced inputs, either

on phono (RCA) sockets, or via a 3.5 mm 3-pole jack plug intended for direct connection to a computer.

In either case, use a suitable connecting cable with jack plugs at one end.

Connecting active speakers

Connecting passive speakers

When mixing, you can connect an additional pair of reference monitor speakers to

LINE OUTPUTS 3 and 4allowing you to check your mix on different types of speaker. By default,

these outputs do not carry the same stereo signal as LINE OUTPUTS 1 and 2. If you wish, you can use

Focusrite Control to route the same stereo signal feeding LINE OUTPUTS 1 and 2to these outputs.

Main

Monitor

Speakers

Additional

Monitor

Speakers

IMPORTANT:

LINE OUTPUTS 1 and 2incorporate “anti-thump” circuitry that protects your speakers

if the Clarett 2Pre is turned on while the speakers (and amplier if used) are connected

and active.

LINE OUTPUTS 3 and 4do not have this circuitry.

If you’re using additional speakers connected to these outputs, we recommend you

power your Clarett 2Pre on rst,

then

turn on the speakers or power amplier. But get

into the habit of following the general rule in any case - it is

always

good audio practice

to turn on a speaker system of any kind

after

turning on the equipment feeding it.

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