Alesis 320USB Technisches Dokument

QUICKSTART OWNER’S MANUAL

(ENGLISH) 1 – 8

MANUAL DE INICIO RÁPIDO DEL USUARIO

(ESPAÑOL) 9 – 16

GUIDE D’UTILISATION SIMPLIFIÉ

(FRANÇAIS) 17 – 24

KURZBEDIENUNGSANLEITUNG

(DEUTSCH) 25 – 32

MANUALE RAPIDO DI UTILIZZO

(ITALIANO) 33 – 40

BOX CONTENTS

Make sure that the following items can be located in the box:

M1Active 320 USB Speakers

Power Cable

USB Cable

1/8” Cable

Quickstart Manual

Safety & Warranty Information

READ THE SAFETY & WARRANTY INFORMATION BEFORE USING THIS PRODUCT!

INTRODUCTION

Thanks for choosing the Alesis M1Active 320 USB desktop monitors – the perfect audio

monitoring solution for desktop based audio systems.

Our M1Active line of speakers were engineered from the ground up to be the perfect studio

monitor. The biamplified design, active crossover, and carefully matched woofer/tweeter

combination ensures perfectly accurate and uncolored playback of your music. These

speakers are like a “sound microscope” that will allow you to hear every nuance of your mix

and help you make better mixes.

In addition to their superior speaker design, the M1Active 320 USB monitors feature a

USB1.1 2in/2out computer audio interface. Simply plug the speakers into your computer

and you are ready to go. Play audio from your computer or record into your computer from

external sound devices connected to the inputs on the rear of the speakers – no additional

audio devices necessary!

We’ve made this quick start guide as short as possible, but please read it carefully in order

to get the most out of your monitors.

We hope your new M1Active 320 USB monitors will serve you well for many years.

Sincerely,

The People of Alesis

RIGHT SPEAKER

HOOKUP DIAGRAM

Refer to the possible connection scenario for hooking up the M1 Active 320 USB speakers.

FRONT PANEL OVERVIEW

1. VOL/POWER – This knob is used to turn the

speakers on and adjust their volume. To turn

on, simply turn up the knob; you will feel a click

when the speakers turn on. A blue LED light on

the left side of the speaker will illuminate. To

turn off, simply turn the volume all the way

down; the blue LED will turn off to let you know

that the speakers are off.

2. HEADPHONES – Connect your 1/8”

headphones to this output to hear the mix

through your headphones. Note that while the

headphones are connected, you will not be able

to hear sound out of your speakers until the

headphones are disconnected.

LAPTOP

KEYBOARD OR SOUND MODULE

TURNTABLE OR

OTHER DEVICE

CD PLAYER OR

OTHER DEVICE

POWER

SOURCE

If you experience problems when

connecting the speakers through a

USB hub, we recommend

connecting the speakers directly to

your computer.

All three input options are mixed

together as a stereo pair when

recording your external sources into

your computer.

REAR PANEL OVERVIEW

1. POWER – Use the included power cable to connect the speakers to a live power

source. Make sure your AC Voltage Selector (see item #2 below) is set to the correct

voltage for your country.

2. AC VOLTAGE SELECTOR – This 2-position switch sets the AC input voltage for the

speaker. US users should set this switch to “100-120V” whereas UK and most

European users will need to set this to “220-240V.

3. OUTPUT TO LEFT SPEAKER –This is the audio connection to the left speaker. Use

the included 1/8” cable to connect the right speaker to the left speaker.

4. USB (1.1) – Use the supplied USB cable to

connect the speaker system to your computer.

Note that the M1Active 320 USB speakers are

Plug-and-Play so there is no additional driver

installation necessary; the speakers should be

ready to use as soon as they are plugged in.

5. 1/8” STEREO INPUT – Use a 1/8” stereo cable

(not included) to connect external sound

sources to this input.

6. 1/4” TS INPUTS – Use 1/4” TS cables (not

included) to connect external sound sources to

these inputs.

7. RCA INPUTS – Use a stereo RCA cable (not included) to connect external sound

sources to these inputs.

8. BASS BOOST – This 2-position switch allows you to boost the speakers’ bass

frequencies.

The speakers and

listener should be at

the three corners of a

triangle having equal

length sides.

LEFT SPEAKER RIGHT SPEAKER

LISTENER

WOOFER/TWEETER MIDPOINT

SPEAKER PLACEMENT

The placement of your speakers has a huge impact on how well they will perform in your

studio.

Although nearfield studio monitors are designed to be more forgiving when it comes to

placement, you should do your best to make sure they form an equilateral triangle relative

to your head. In other words, make sure that each speaker is equally distant from both

your head as well as the other speaker. Once each speaker has been placed, rotate the

speakers slightly so that the drivers are pointing toward the engineer.

Take a look at the diagram on

the right. Notice that the

distance from the engineer’s

head to each speaker is the

same as the distance between

the left and right speakers. Also

note that the speakers are

turned slightly so that the drivers

are facing the engineer.

This is an ideal setup but if it is

not practical (or possible) to do

this, try to match this setup as

closely as possible.

SPEAKER HEIGHT

The ideal height for M1Active 320

USB speakers is so that the

speaker is parallel to the ground

and that the midpoint of the woofer

and tweeter is at ear-height.

The diagram below demonstrates

the ideal placement height of the

speakers relative to the engineer.

Notice that the engineer’s ears are

directly between the woofer and

tweeter.

If possible, use speaker stands and move the monitors off of your desk (or meter bridge, if

you are using a mixer). This usually results in better imaging since the monitor is

decoupled from your desk and there is less chance reflected sound from the desk (or

mixer) reaching your ears and smearing the imaging of your studio monitors.

Tip: While in Sounds and

Audio Devices, we

recommend turning off

Windows system sounds

so they do not interfere

with your audio while in the

middle of a session. You

can do this by clicking on

the Sounds tab and

selecting No Sounds

under the Sound Scheme

pull-down menu.

CONFIGURATION UNDER WINDOWS

The M1Active 320 USB speakers are plug-and-play under Windows XP/Vista so there is no

special driver installation necessary. Simply power on the speakers, connect them to your

computer’s USB port and all the necessary drivers will be automatically installed.

When you first plug the speakers into your computer, you will

see a few messages similar to the one shown on the left. Allow

the process to complete.

Once the process has completed, you will see the

message displayed on the left. Your speakers are

now ready to use.

You may choose to use the M1Active 320 USB

speakers as the default audio output for your

computer. To access your computer’s default audio

preferences, go to Start Control Panel

 Sounds and Audio Devices and click on the

Audio tab.

You will see the screen displayed on the right.

To select the speakers

as the default

playback device,

choose USB Audio

CODEC under Sound

Playback.

To select the speakers

as the default

recording device,

choose USB Audio

CODEC under Sound

Recording.

ABOUT LATENCY & THIRD-PARTY ASIO DRIVERS

“Latency” is the delay between the moment when audio is generated and the moment when

you actually hear it. Higher latency means a longer delay.

The M1Active 320 USB speakers feature zero latency direct monitoring so you don’t have to

worry about latency when monitoring input sources connected to the rear of the speakers.

However, latency may become an issue when using software synths and instruments.

Generally, you want to keep latency as low as possible while still allowing your equipment to

operate without glitches. Latency and buffering is usually adjusted in your software’s

Preferences settings.

If you still experience too much latency or “lag” when using software synths and

instruments, you might want to download one of the free and widely available ASIO (Audio

Stream Input/Output) drivers from the Internet. In general, ASIO drivers may perform better

and with lower latency since they create a more efficient communication between audio

devices and software. You may download and install the free ASIO4ALL driver (PC) by

visiting www.asio4all.com.

IMPORTANT: Make sure

that software monitoring is

turned off when recording

from external sound

sources. Otherwise, you

may get feedback and

distortion. To turn off

monitoring on the

recording channel, you can

simply mute the channel in

your software.

CONFIGURATION UNDER MAC OSX

The M1Active 320 USB speakers are plug-and-play under Mac OSX so there is no special

driver installation necessary. Simply power on the speakers, connect them to your

computer’s USB port and the speakers should be ready to use immediately.

You may choose to use the M1Active

320 USB speakers as the default

audio output for your computer. To

access your computer’s default audio

preferences, go to Applications 

Utilities and double-click Audio MIDI

Setup.

Under the Audio Devices tab, select

USB Audio CODEC as the default

system input and output.

CONFIGURING YOUR DAW

Below are some tips on configuring your DAW to work with the speakers.

PLAYBACK

You may need to make sure that the speakers are enabled as an audio output device in

your DAW, if you have not set them to be the default system audio output. This is usually

done in the application’s Preferences dialog.

RECORDING

As you may have noticed, there are several inputs on the

rear panel of the left speaker. These inputs allow you to

record external sound sources directly into your computer.

Note that the three sets of inputs are summed together

before entering your computer as a stereo track. Therefore,

it’s important to ensure that the volume of the input signal

does not clip when using multiple external devices

simultaneously.

To record from the inputs, make sure that the speakers are

enabled as an audio input device in your DAW. This is

usually done in the application’s Preferences dialog.

TROUBLESHOOTING

Please refer to the following list of common troubleshooting scenarios if you run into

problems.

PROBLEM CAUSE SOLUTION

Speakers not plugged in. Make sure that the speakers are

connected to a live power source.

Speakers not turned on. Make sure that the speakers are turned

on. The blue LED will be illuminated

while the speakers are on.

Speakers not connected to

computer.

Make sure that the speakers are

connected to a functioning USB port on

your computer.

Problem is caused by use of a

hub.

We strongly recommend that you avoid

using USB hubs and connect the

speakers directly to your computer.

Headphones are plugged in. Remember that while the heaphones

are plugged in, the speakers will not

output audio. Disconnect the

headphones if you would like to listen

through the speakers.

Speakers do not work.

Volume is all the way at

minimum..

Turn up the volume knob on the front to

a suitable level.

I am only hearing audio from

the left speaker.

Right speaker not connected. Make sure that the right speaker is

connected to the left speaker with the

included 1/8“ cable.

Gain levels of your input

sources are too hot.

Turn down the audio level of your input

sources. This is extrenely important

when using multiple sources, as the

inputs on the rear panel of the speakers

will be summed together before

entering your computer.

I am experiencing distortion

when recording from external

sources.

Software monitoring has not

been truned off and is causing

a feedback loop.

Make sure that your software

monitoring is turned off when recording

from external sources to avoid

feedback and distortion.

Buffer size in your software is

set too high.

Set the buffer size to a lower value.

This is usually done in your software’s

Audio settings or perferences.

I am experiencing a lot of

latency or “lag“.

The class-compliant audio

drivers are insufficient.

Download the free ASIO4ALL driver

from www.asio4all.com. It may help

achieve better results under extremely

low latency settings.

I am experiencing audio

dropouts and glitches.

Buffer size in your software is

set too low.

Exteremely low buffer sizes can result

in your computer working harder than it

can, causing unwanted dropouts and

glitches. Select a higher bugger size in

your software to avoid this.

My software DAW is not

“seeing“ the speakers.

Speakers were connected

after the software was started.

Some configurations require that audio

and MIDI devices are connected prior

to starting any software applications

with which you may wish to use the

devices. Try restarting the application

with the speakers plugged in and

powered on.

TECHNICAL SPECIFICATIONS

Woofer: 3” lightweight, magnetically-shielded,

polypropylene cone with rubber surround and high

power handling voice coil. 4 Ohm impedance.

Tweeter: 1” silk dome

Frequency Response: 80 Hz – 20 kHz

Bass Boost: 4.8dB at 100Hz

Power: 10 W per channel RMS

Signal-to-Noise Ratio: 88dB weighted

Inputs: 1/4" TS, RCA, 1/8" Stereo, USB1.1

Input Impedance: 20k ohms

DAC/ADC 16 bit delta sigma, 44.1kHz or 48kHz sampling

rate

Dimensions (W x H x D): 6.0” x 5.0” x 7.5” / 15.3 cm x 12.7 cm x 19.0 cm

Net Weight (total): 7.5 lbs / 3.4 kg

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