DigiDesign Mbox Guide de l'utilisateur

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Mbox Basics Guide

Version 6.7 for LE Systems on Windows XP or Mac OS X

USO RESTRITO

Avid Technology, Inc. (hereafter “Digidesign”), with all rights

reserved. Under copyright laws, this guide may not be

duplicated in whole or in part without the written consent of

Digidesign.

DIGIDESIGN, AVID and PRO TOOLS are trademarks or

registered trademarks of Digidesign and/or Avid Technology,

Inc. All other trademarks are the property of their respective

owners.

Product features, specifications, system requirements and

availability are subject to change without notice.

PN 932013935-00 REV A 9/04

USO RESTRITO

Introduction

Welcome to the

Mbox Basics Guide

. This guide is

designed to give new users specific methods for

accomplishing common tasks with the Mbox

desktop audio interface and Pro Tools LE soft-

ware.

Once you are familiar with basic Mbox opera-

tion, we recommend that you read the “Work-

ing With Pro Tools” tutorial in the

Getting

Started with Mbox Guide

. For the most complete

resource for using Pro Tools software, please re-

fer to the

Pro Tools Reference Guide

Online Resources

Many resources for learning to use Pro Tools are

also available online at the Digidesign Web site

(www.digidesign.com), including the following:

DiSK (Digidesign Sound Knowledge)

Instruc-

tional material about how to use Pro Tools, in-

cluding DiSK Flix movies that show how to do a

number of popular tasks using Pro Tools.

DigiZine

A magazine for and about Pro Tools us-

ers, providing all the latest product news, user

stories, and hundreds of tips and ideas.

Mbox Basics Requirements

Before proceeding, make sure you have:

• Connected the Mbox to your computer with

the USB cable

– and –

•Installed Pro Tools LE software as described in

the appropriate Windows or Macintosh in-

stallation chapter of the

Getting Started with

Mbox Guide.

USO RESTRITO

Mbox Basics Guide

Getting Sound In and Out of your Mbox

To hear audio recorded into a Pro Tools session,

you will need to connect headphones or an ex-

ternal sound system (such as powered monitors

or a home stereo) to Mbox. Sound from Mbox

cannot be played through your computer’s

speakers or your computer’s sound output.

Connecting Headphones

There are two headphone jacks on the Mbox, a

1/8-inch mini plug jack on the front, and a 1/4-

inch jack on the back. You cannot use both

jacks at once.

To connect headphones:

• Connect headphones with a 1/8-inch stereo

mini connector (or an adapter) to the front

Headphone jack.

– or –

• Connect headphones with a 1/4-inch stereo

connector (or adapter) to the back Head-

phone jack.

Connecting a Sound System

The outputs on the back of the Mbox support

1/4-inch plugs. These connections can be bal-

anced, TRS style connectors, or unbalanced. To

listen to your Pro Tools session, these outputs

can be connected to any ampliﬁcation system:

powered speakers, home stereo system, or an au-

dio mixer.

When connecting to a stereo system, connect

the left channel (often the white plug) to Line

Output 1, and right channel (often the red plug)

to Line Output 2.

Line Outputs 1 and 2 play the audio that is

routed to analog outputs 1 and 2 within

Pro Tools.

Headphone jacks on front and back of Mbox

The front panel Headphone control adjusts

the volume level of both the front and back

Headphone jacks.



Front 1/8-inch

Headphone jack

Back

1/4-inch

Headphone

jack

Home stereo systems often use RCA connec-

tors. You can use an adaptor or a special ca-

ble to convert from the TRS or TS connectors

used by Mbox to the RCA connectors on

your home stereo.

Stereo output from the Mbox

Line Output 2

(right output)

Line Output 1

(left output)

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Getting Sound In and Out of your Mbox

Connecting Audio Inputs

Mbox inputs (sources) support microphones,

guitars, keyboards, and other types of instru-

ments.

Mbox has two audio inputs, labeled Source 1

and Source 2. For stereo inputs, use Source 1 for

the left input, and Source 2 for the right input.

For information about connecting specific au-

dio sources, see “Attaching a Microphone to the

Mbox” on page 4, and “Connecting Instru-

ments to the Mbox” on page 6.

Source Inputs on back of Mbox

Source 2 input

Source 1 input

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Mbox Basics Guide

Connecting a Microphone

Attaching a Microphone to the

Mbox

There are several ways to use Mbox with a mi-

crophone, depending on the type of micro-

phone and cables that you use.

Some microphone cables use an XLR connector

to attach a microphone to an input (such as

those on the Mbox); other microphones use a

1/4-inch connector. If you have a choice, use an

XLR connector to connect the microphone to

the Mbox to yield better results.

Phantom Power

Some microphones require power to operate.

This power, called

phantom power

, is supplied ei-

ther by a battery in the microphone, or through

an audio interface (such as Mbox) that can sup-

ply power through the microphone cable.

Most

condenser

microphones (such as an AKG

C3000) require phantom power to operate.

Dy-

namic

microphones (such as a Shure SM57) do

not require phantom power to operate, but are

not harmed by it.

The Mbox can only supply power through a mi-

crophone cable with XLR connectors. If you are

not sure about the phantom power require-

ments for your microphone, consult your mi-

crophone’s documentation or contact the man-

ufacturer.

To use a microphone that has an XLR connector:

Plug your microphone cable into one of the

Source inputs on the back of Mbox. The inputs

are numbered from the bottom up, so Source 1

is the bottom input.

Set the Source to Mic (microphone) by press-

ing the Source selector on the front of Mbox un-

til the Mic LED is lit.

XLR and 1/4-inch connectors

Although phantom power can be used

safely with most microphones, it is possible

to damage some ribbon microphones with

it. Always turn off phantom power and

wait at least ten seconds before connecting

a ribbon microphone.

XLR connector

1/4-inch connector

XLR connector plugged into the Source 1 input

Channel 1 Source controls on the Mbox front panel

Source 2 input

Source 1 input



Source

selector

Mic LED

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Connecting a Microphone

If your microphone requires phantom power,

make sure the microphone is connected, then

press the Phantom Power switch on the back of

the Mbox (labeled 48V). This switch sends 48V

both

mic inputs. The 48V LED on the front of

the Mbox will light when phantom power is be-

ing supplied.

On the front of the Mbox, turn the Mix con-

trol fully left to Input.

On the front of the Mbox, carefully turn the

Gain control to the right to increase the input

level of your microphone signal.

To use a microphone that has a 1/4-inch

connector:

On the back of the Mbox, plug the 1/4-inch

connector from your microphone into one of

the Source inputs. The inputs are numbered

from the bottom up, so Source 1 is the bottom

input.

On the front of the Mbox, set the source to

Inst (instrument) by pressing the Source selector

until the Inst LED is lit.

On the front of the Mbox, turn the Mix con-

trol fully left to Input.

On the front of the Mbox, carefully turn the

Gain control to the right to increase the input

level of your microphone signal.

Phantom Power switch

1/4-inch connector plugged into the Source 1 input

Phantom Power

switch

Source 2 input

Source 1 input

Do not plug the microphone into the 1/4-

inch jacks labeled “Inserts.” These are not

inputs. They are special connectors for us-

ing an external effects processor (such as a

compressor or EQ).

If you are using a microphone with a 1/4-

inch connector, do not choose the “Mic” in-

put source because the Mbox will not regis-

ter any signal.

Channel 1 controls and the Mix control on the Mbox

front panel



Source

Selector

Inst LED

Mix control

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Mbox Basics Guide

Connecting Instruments

Connecting Instruments to the

Mbox

Mbox provides two switchable line input types

that correspond to the different signal strengths

output by different types of instruments. Instru-

ments such as electric guitar or electric bass usu-

ally have a lower level of output than instru-

ments and electronic audio sources such as

mixers, samplers, keyboards, turntables, and

synthesizers.

To use a guitar with Mbox:

On the back of your Mbox, plug your guitar

cable into one of the Source inputs. The inputs

are numbered from the bottom up, so Source 1

is the bottom input on the back of your Mbox.

On the front of the Mbox, set the Source to

Inst (instrument) by pressing the Source selector

until the Inst LED is lit.

On the front of the Mbox, turn the Mix con-

trol fully left to Input.

On the front of the Mbox, carefully turn the

Gain control to the right to increase the input

level of your guitar.

Guitar cable plugged into the Source 1 input

Do not plug the guitar into the 1/4-inch

jacks labeled “Inserts.” These are not in-

puts. They are special connectors for using

an external effects processor (such as a com-

pressor or EQ).

Source 2 input

Source 1 input

Source selector and Gain control for the Source 1 input

When you record a guitar (or any mono in-

strument that uses only one source input)

you will hear the sound in only one side of

the stereo field. Pushing the “mono” button

on the front of the Mbox brings the sound

from one side of the stereo field to both.



Source

selector

Inst LED

Source 1 input

Gain (level) control

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Connecting Instruments

To use a keyboard or mixer with Mbox:

Plug your keyboard, mixer, or other audio

source into either the Source 1 or Source 2 input

on your Mbox. If your source is stereo (such as a

stereo keyboard or the stereo output from a

mixer), connect the left channel (often the

white plug) to Source 1, and right channel (of-

ten the red plug) to Source 2. The inputs are

numbered from the bottom up, so Source 1 is

the bottom input on the back of your Mbox.

On the front of Mbox, set the source to Line

(line level) by pressing the Source selector until

the Line LED is lit.

On the front of the Mbox, turn the Mix con-

trol fully left to Input.

Set your instrument’s volume to its optimal

level. For example, the optimal level for most

keyboards is between 80% and 100% of maxi-

mum volume.

On the front of the Mbox, carefully turn the

Gain control to the right to increase the input

level of your keyboard.

Mbox conﬁguration for stereo input

Do not plug any sound source into the 1/4-

inch jacks labeled “Inserts.” These are not

inputs. They are special connectors for us-

ing an external effects processor (such as a

compressor or EQ).

Source 2 input

Source 1 input

(right channel)

(left channel)

Source selector and Gain control for the Source 1 input



Source

selector

Line LED

Gain (level) control

USO RESTRITO

Mbox Basics Guide

Recording a Pro Tools Session

Recording with Pro Tools and the Mbox in-

volves creating a Pro Tools session, preparing an

audio track for recording, and recording.

To create a session in Pro Tools:

Verify the connections between the Mbox and

your instrument or microphone.

Launch Pro Tools.

Choose File > New Session.

Set Session Parameters in the New Session di-

alog as needed, or leave them at their default set-

tings. (For details on New Session settings, see

the

Getting Started with Mbox Guide

Select where you want to save your session.

Type a name for your session.

Click Save. Pro Tools creates a new session.

To prepare an audio track for recording:

Create a new track to record on by choosing

File > New Track.

Specify 1 Mono Audio Track in Samples, if

your source is mono, or 1 Stereo Audio Track in

Samples, if your source is stereo.

Click Create.

Make certain the Mix window is open by

choosing Windows > Show Mix.

In the Mix window, click the Input Selector on

the new track.

New Session dialog

Creating a new stereo audio track

A mono instrument uses one input on the

Mbox, and a stereo instrument uses two.

Creating a stereo track in Pro Tools will not

make a mono instrument into a stereo in-

strument. If a mono instrument is recorded

on a stereo track, one of the sides of the ste-

reo track will show no signal.

Showing the Mix widow

Choosing an input in the Mix window

Input selector

USO RESTRITO

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