Focusrite Clarett 4Pre Manual de usuario

User Guide

focusrite.com

Version 2

FFFA001256-02

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 4Pre ...................................................8

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

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

Connecting Clarett 4Pre to loudspeakers............................................9

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

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

2. Recording a drum kit with (and without) the optical connection ......................13

3. Providing foldback while recording..............................................15

4. Loopback Recording..........................................................16

FOCUSRITE CONTROL - OVERVIEW...............................................16

CLARETT 4PRE TECHNICAL SPECIFICATIONS......................................17

Performance Specications ...................................................17

Physical and Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

TROUBLESHOOTING ...........................................................19

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 4Pre, 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 4Pre 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 4Pre 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 4Pre 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

4Pre 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 4Pre 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 4Pre 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

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 4Pre 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 4Pre 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 4Pre you should have:

• DC power supply (AC adaptor)

• 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 4Pre, including several powerful and useful extras, is available

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

provided with your Clarett 4Pre contains validation codes if you wish to register your Clarett and

access the optional bundled software.

xxxxxx-xxxxxx-xxxxxx

xxx-xxx-xxx-xxx

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 Focusrite Control software application. 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 4Pre 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/clarett-4pre.

Hardware Features

Front Panel

2 1 1 11

2 8 9 9

3 355 3 10 6 75 43 5

The front panel includes input gain and monitoring controls as well as four of the input connectors

for Mic, Line and Instrument signals.

1. INPUTS1to4–“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 Combi connectors

for mic inputs 1 & 2 and 3 & 4 respectively. The switches each have an associated red LED

indicating phantom power is selected.

3. Gain 1to 4– four rotary controls: adjust the input gain for the signals at Inputs 1 to 4 respectively.

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 – four yellow LEDs – one per input - which illuminate when the AIR function is selected

for the 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 4Pre’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) 1and 2 – connect headphones here. The stereo mixes at these outputs

are set up in Focusrite Control: Headphone 1 always carries the same mix as Line Outputs 3

and 4, while Headphone 2 can provide a completely independent mix by using Outputs 5

and 6 in the software. Each headphone output has its own volume control.

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

Rear Panel

367 5

48 9

1. LINE INPUTS 5 to 8– four balanced analogue line inputs for Channels 5 to 8, on ¼” TRS jack

sockets. Connect further line level signals here using ¼” TRS (balanced) or TS (unbalanced)

jack plugs.

2. LINE OUTPUTS 1to 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.), providing foldback

mixes or to send audio to outboard FX processors. The signals routed to all the outputs may

be dened in Focusrite Control.

3. 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 4Pre, and appear within Focusrite

Control as Inputs 13 to 20. This input can also be congured to work with an optical S/PDIF

source.

4. – Thunderbolt™ connector; connect the Clarett 4Pre to your computer with a suitable

Thunderbolt™ cable.

5. 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.

SPDIF IN and OUT – two phono (RCA) sockets carrying two-channel digital audio signals in or

out of the Clarett 4Pre in S/PDIF format. Like all the other inputs and outputs, the routing of

S/PDIF signals may be customised in Focusrite Control. The S/PDIF Input appears in

Focusrite Control as Inputs 9 and 10 and the S/PDIF Output as Outputs 7 and 8. The S/PDIF

inputs are functional up to 96 kHz sample rate.

6. External DC power input – power the Clarett 4Pre via the separate AC adaptor (PSU) supplied.

The PSU is a 12 V DC unit rated at 2 A.

7. Power On/Off switch.

8. Kensington security slot– secure your Clarett 4Pre to a suitable structure if desired. Please

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

Connecting your Clarett 4Pre

IMPORTANT: Before you connect the Clarett 4Pre 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 4Pre 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 4Pre has a Thunderbolt™ port (on the rear panel). Once the software installation is

complete, connect the Clarett 4Pre to your computer using a Thunderbolt™ cable.

Computer audio setup

Your OS should automatically select the Clarett 4Pre 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-4Pre.

Audio Setup in your DAW

After installing the drivers and connecting the hardware, you can start using the Clarett 4Pre with

the DAW of your choice.

Please note - your DAW may not automatically select the Clarett 4Pre 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 4Pre as your audio device.

* Typical name – page names may vary with DAW

Connecting Clarett 4Pre 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.

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.

Professional power ampliers will generally have balanced inputs.

Connecting passive speakers

When mixing, you can connect an additional pair of speakers (mid-eld. near-eld, etc.) to

LINE OUTPUTS 3and 4 to check your mix on different types of speaker. You can congure Focusrite

Control to route the mix to these outputs as well as Outputs 1 and 2.

Main

Monitor

Speakers

Additional

Monitor

Speakers

IMPORTANT:

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

if the Clarett 4Pre 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 4Pre 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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