Reference Manual

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Table Of Contents

Introduction...5
Welcome!.... 5 About the MultiMix 8 FireWire..6 All-In-One Mixer and Multichannel Computer Audio Interface... 6 MultiMix 8 FireWire Key Features... 7 How to Use This Manual...8 A Few Words for Beginners...9
Chapter 1: Getting Started..11
Hooking up the MultiMix 8 FireWire..11 Using Proper Cables...12 Setting Levels...12
Chapter Two: A Tour of the MultiMix.13
Patchbay...13 Mic Inputs (Channels 1 4)... 13 Line Inputs (Channels 1 4)... 13 Line Inputs (Channels 5 8)... 14 PHONE Jack.... 14 AUX RETURNS... 14 AUX SENDS.... 14 2-TRACK.... 14 MAIN MIX OUT.... 14 CTRL RM OUT.... 14 Channel Strips...15 Level Control.... 15 PAN or BAL... 15 PEAK LED.... 15 Aux.... 15 EQ..... 16 Master Section...16 Main Mix.... 16 2TK To Mix.... 16 HDPH / CTRL RM... 16 2TK TO CTRL ROOM Switch... 17 AUX RETURN A LEVEL... 17 EFFECTS / AUX RET B LEVEL.. 17 LED Meters.... 17 POWER Indicator... 17 +48V Indicator... 17 Rear of the Mixer...18 Power Input.... 18 Power Supply Unit... 18 Power On.... 18 Phantom On... 18 Firewire ports.... 18
Chapter Three: Digital Effects Processor...19
Effects Section Components..19 Program Selection Knob... 19 LED Display... 19 CLIP Indicator.... 19 SIG Indicator.... 19 Effect Descriptions...19 HALL.... 19 ROOM.... 19 PLATE.... 19 CHAMBER.... 19 CHORUS.... 20 FLANGE.... 20 DELAY.... 20 PITCH.... 20 MULTI & MULTI II.... 20
Chapter Four: Traditional Mixing.21
Simple Live Setup...21 Using Additional External Audio Sources..21 Simple Two-Channel Recording Setup (without Firewire)..22
Chapter Five: Firewire Recording.23
First-time connection instructions..23 and driver installation..23 Installing the optional applications.24 Power-on/Power off order..24 Power-on sequence... 24 Power-off sequence... 24 Firewire inputs and outputs..25 Channels sent from the MultiMix to the computer. 25 Channels returned from the computer to the MultiMix.. 25 Sound setup under Windows..26 Disabling Windows System Sounds..28 Connections and settings for Firewire recording and monitoring..29 Using the MultiMix FireWire with Cubase and other ASIO applications..29 Choosing the MultiMix as your audio device... 30 Creating a new audio file... 34 Working with the ASIO control panel..38 Accessing the ASIO control panel... 38 Setting the mixer nickname... 38 Setting the master device... 38 Adjusting latency by changing the buffer size.. 39 Adjusting the sample rate... 39

Table of Contents

Using the MultiMix FireWire with Sonar and other WDM applications..40 Choosing the MultiMix as your audio device... 40 Assigning inputs to audio tracks... 43 Using the MultiMix FireWire with CoreAudio on the Macintosh..44
Chapter Six: Troubleshooting: nonFirewire...45 Chapter Seven: Troubleshooting: Firewire...49
Computer or audio application does not see the MultiMix FireWire..49 Basic troubleshooting... 49 Advanced troubleshooting under Windows.. 49 Audio playback or recording is at the wrong speed...51 Audio playback or recording stutters or drops out...51 Audio echoes during recording..51
Chapter Eight: Specifications..53 Chapter Nine: Block Diagram..55 Glossary...57 Contact Information..59
Alesis Contact Information... 59 Trademarks... 59
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Introduction

Welcome!
Thank you for making the Alesis MultiMix 8 FireWire a part of your studio. Since 1984, we've been designing and building creative tools for the audio community. We believe in our products, because we've heard the results that creative people like you have achieved with them. One of Alesis' goals is to make high-quality studio equipment available to everyone, and this Reference Manual is an important part of that. After all, there's no point in making equipment with all kinds of capabilities if no one explains how to use them. So, we try to write our manuals as carefully as we build our products. The goal of this manual is to get you the information you need as quickly as possible, with a minimum of hassle. We hope we've achieved that. If not, please drop us an email and give us your suggestions on how we could improve future editions of this manual. We hope your investment will bring you many years of creative enjoyment and help you achieve your musical goals. Sincerely, The people of Alesis

Although chances are your microphones will work fine with these mic inputs, we recommend that you do some checking up on the type of microphone youre using, especially if its one of the older vintage models. Verify that your microphone requires phantom power and make sure its output is low impedance, balanced and floating.
Line Inputs (Channels 1 4)
The line inputs, marked LINE IN, are balanced 1/4 jacks that offer the same 50dB of preamp gain and the high-pass filter provided by the mic inputs (however, phantom power does not apply to line inputs). These inputs accept line-level instruments such as keyboards and drum machines. If you find that your instrument has a weak line signal, just plug it into channels and crank it up with the Gain knob.
Always connect your microphones before activating phantom power. Microphones tend to be very sensitive, and the sudden power surge can do permanent damage to the mics circuitry. Its also a good idea to lower mixer levels before you activate phantom power.
A Tour of the MultiMix FireWire
Line Inputs (Channels 5 8)
Unlike channels 1 4, the line inputs on channels are stereo inputs that have left and right inputs. If youre using one of these channels as a mono input, plug your instrument into the left input. Channels dont have the extra gain found on channels because most line-level instruments dont require the extra boost. MIDI and other electronic instruments will work especially well on these channels. These inputs are also good for connecting CD players or tape decks, as these audio sources dont require extra gain.

PHONE Jack

The headphone jack accepts 1/4 plugs. If your headphones are 1/8, you can find a 1/8 to 1/4 adapter in most electronics stores.

AUX RETURNS

These are the 1/4 jacks where you connect the outputs of an external effects processor or other audio source. Each aux return gives you 15dB of gain that can be controlled by the AUX RET A and EFFECTS / AUX RET B LEVEL knobs in the mixers output section.
If you are using an effects device with only a mono output, plug it into the left return of STEREO AUX RETURN. It will appear in the center of the stereo spectrum, and not to the left.

AUX SENDS

Use these jacks to connect the lines going out of the MultiMix into the input of an external effects processor. The aux sends give you 10dB of gain that can be controlled in the AUX section of each channel input.

2-TRACK

The 2-TRACK IN and OUT jacks are standard RCA jacks. Youll use the OUTs for mixing to a tape deck or other recorder. With the INs you can bring in a signal, which can be monitored and even added to the main mix via the 2TK TO MIX switch in the master section of the mixer. The 2-TRACK INPUT is blended with any signal coming back from a computer over the Firewire connection.

The MultiMix gives you three bands of EQ per channel. Using these knobs, you can tailor the channels signal by boosting some frequencies and cutting others. The LO and HI controls are shelving controls with fixed frequencies of 75 Hz and 12 kHz respectively. The MID control has a peaking response fixed at 2.5 kHz. Shelving means that the mixer boosts or cuts all frequencies past the specified frequency. Peaking means that frequencies above and below the specified frequency fall off, forming a peak in a graphical representation.

Master Section

The Master Section is the heart of the mixer, where the channel inputs and aux returns all are mixed together and routed in various ways.

Main Mix

The signals from all channels and aux sends are sent to the main mix. The MAIN MIX level control is the one youll use to control the overall level of those combined signals. This knob affects the levels of the signals sent to the MAIN MIX OUT and the 2TRACK OUT. In its leftmost position the signal is cut off completely, and in the rightmost position you get an additional 10dB of gain.

2TK To Mix

When you press this switch, the signal coming in through the 2TRACK IN gets routed to the MAIN MIX, joining whichever other signals are already part of the main mix. Used this way, the 2-TRACK IN effectively becomes another stereo channel (but without all the extras like pan, EQ, etc.).

HDPH / CTRL RM

The HDPH / CTRL RM knob controls the level of the signal being sent to the CTRL RM OUT and the PHONES output. The level of this signal is represented by the LED meters. The CTRL RM in the name of this knob refers to the fact that it controls the signal that typically is sent to the control room monitors of a studio, where someoneusually an engineeris working the mixer. However, dont be intimidated if youre using this mixer in your bedroom, which probably isnt equipped with a control room. In this scenario, you can use headphones or connect the CTRL RM OUT to your speakers.

2TK TO CTRL ROOM Switch

When you engage this switch, the signal coming in from the 2TRACK jacks is routed to the headphones and to the control room output. This level is controlled by the HDPH / CTRL ROOM level control and cancels out any signal from the main mix.

AUX RETURN A LEVEL

This is the level control for the signal returning to the mixer via AUX RETURN A.
EFFECTS / AUX RET B LEVEL
If you are using one of the MultiMix 8 FireWires internal effects, this knob controls the effect level. If AUX SEND B is connected to an external device, this knob controls the level for AUX RETURN B.

LED Meters

These are the two rows of yellow, green and red lights you see in the master section of the mixer. The LED meters allow you to view the signal level of the main mix and 2-TRACK IN depending on which signal you have routed to the control room mix.

POWER Indicator

When this LED is lit up, that means the POWER ON switch on the rear of the mixer has been activated.

+48V Indicator

When this one is lit up, that means the PHANTOM ON switch on the rear of the mixer has been activated and is supplying +48V phantom power to all XLR mic inputs.

Rear of the Mixer

Heres what youll find at the rear of the mixer.

Power Input

Heres where you plug in your mixers external power supply. You should always connect your power supply to the mixer before you plug the power supply into an electrical outlet.
The POWER INPUT is built to accept only the power supply unit provided with your MultiMix 8 FireWire, or an AC power supply that has the same specs. Others probably will not work.

Power Supply Unit

This unit provides 18.5 VAC at 700 mA, more than enough to keep your MultiMix 8 FireWire running smoothly. As with nearly all power supply units, this one tends to get warm when left on for a while. This is perfectly normal.

Power On

Another easy one. Switch this one on and your mixer has power. Switch it off and it doesnt. Make sure that all master output knobs are turned all the way down when powering your mixer up or down.

Phantom On

This switch activates and deactivates the phantom power described in Mic Inputs (Channels 1 4), page 13. This switch controls phantom power for all four mic inputs.
As we said earlier, its very important that you plug in your microphones and mute your system before you turn on phantom power.

Firewire ports

Simple Live Setup

In this setup, connect your instruments and microphones to the mono and stereo channels. Set the levels for each of your microphones and line-level sources as explained earlier. You can select one on-board effect and control its level with the AUX B knob for each channel. You can also use an external effects processor by sending a signal to the external unit via the AUX SEND A and returning it via AUX RETURN A. You can plug an additional effects processor into the AUX B SEND and RETURN jacks as well, but this will disable the internal effects. In a live setup, you most likely will connect the MAIN MIX OUT to a PA system amplifier and the CTRL RM OUT to a stage monitor amplifier for monitoring purposes.
Using Additional External Audio Sources
The MultiMix gives you a few extra audio inputs in addition to the mic and line inputs. If you want to bring external audio sources into a recording or live mix, you can do it in one of two ways: Using the 2-TRACK IN, you can add a tape deck, ADAT, CD player, Firewire audio stream from a computer, or other source to the mix. The 2-TRACK IN also can be used to entertain the audience with a CD as the band is setting up for a live show. The AUX RETURNS can be used as additional audio inputs when you are not using them for effects.
Audio coming into the MultiMix from a computer over the Firewire connection is routed to the 2-TRACK IN. You can use the RCA jacks of the 2-TRACK IN at the same time as audio is playing back from a computer, but you must adjust the relative levels of each input from outside the MultiMix.

Traditional Mixing

Simple Two-Channel Recording Setup (without Firewire)
Again, connect your instruments and microphones to the mono and stereo channels and set the levels appropriately. To record directly from the mixer to a tape deck or other device, connect the MultiMix 8 FireWires 2-TRACK OUT jacks to the IN jacks of the recorder. For monitoring you can connect the CTRL RM OUT jacks to a speaker or headphone amplifier, or just simply plug headphones into the PHONES jack.

5 Firewire Recording

Important: download the drivers from http://www.alesis.com onto a folder on your desktop or insert the software CD into your computers CD drive BEFORE you plug your MultiMix into your computer for the first time.
First-time connection instructions and driver installation
Important: Follow these steps BEFORE you plug in your MultiMix FireWire mixer for the first time. If your computer has access to the Internet, point your browser to the Support > Downloads section of http://www.alesis.com. Its possible that updated drivers have been posted there since the time the software CD included with your MultiMix was printed. Using either drivers from the website or the software CD, connect your MultiMix FireWire to your computer and turn the MultiMix FireWire on. Windows Under Windows XP, the Found New Hardware wizard will run. You will be prompted to install a series of drivers. If you downloaded the drivers from the Internet, choose to install the drivers from a specific location when prompted, and point to the folder that contains the drivers. If you are using the drivers from the CD, choose to install the drivers automatically when prompted. For each of the several installations that occur, click Continue Anyway if Windows warns you that the drivers have not passed Microsoft Logo Certification.

These drivers include the two most popular standards for audio interfacingWDM (the Windows Driver Model built by Microsoft) and ASIO (the Audio Stream Input/Output standard used by many audio software applications).
Windows Logo Certification warning. Ignore this warning by clicking Continue Anyway.
Your MultiMix Firewire mixer requires several sets of drivers to work properly. The installation process will automatically install these drivers one by one. Let the installer continue installing the various sets of drivers until the you see a message stating, Your

Firewire Recording

new hardware is installed and ready to use. Do not cancel any of the installations, as they are all required for proper operation. Macintosh Mac driver installation is more straightforward, as only CoreAudio drivers are installed. Simply double-click the installer program to install the drivers.
Mac OS X 10.3 or higher is required by the MultiMix drivers.
Installing the optional applications
The software CD that comes with the MultiMix FireWire contains not only the drivers (the small computer programs that work behind the scenes so that your MultiMix works properly with your computer) but also some powerful music applications. If you dont already have a Digital Audio Workstation (DAW) program, definitely install the one provided on the CD. Its a fantastic way to get started in computer-based recording. You may find that its the only program you need. The demo applications give you a taste of some of the premier computer-based music programs on the market today. We encourage you to install and explore them.

Power-on/Power off order

To ensure that the MultiMix is recognized correctly by your computer, follow these instructions for powering on and off your equipment:
All digital audio carried over the Firewire connection is 24-bit PCM data. (Digital audio sent through the S/PDIF output is 16 bitthe standard bit rate for CD audio.)

Power-on sequence

1. 2. 3. 4. 1. 2.
Connect mics and line-level sources to the MultiMix. Connect the MultiMix to the computer using the Firewire cable. Turn on the MultiMix. Wait a couple of seconds. Turn on the computer. Turn off the computer. Wait for the computer to shut down entirely. Turn off the MultiMix.

If you have a notebook computer with a miniFirewire connection, use a 4pin to 6-pin Firewire cable (not included) to connect to the MultiMix FireWire.

Power-off sequence

You can use either of the two Firewire ports on the back of the MultiMix. The other port can be used to attach another Firewire-based computer peripheral, such as an external hard drive.
Firewire inputs and outputs Channels sent from the MultiMix to the computer
The Firewire port sends every individual mixer channel as well as the MultiMixs MAIN OUT/2-TRACK OUT left and right signals to the computer. This means that, for the MultiMix 12 FireWire, 12 individual channels are sent to the computer along with the MAIN stereo pair (14 channels in total.) For the MultiMix 16 FireWire, 16 individual channels are sent to the computer along with the MAIN stereo pair (18 channels in total.) Individual channels The INDIVIDUAL channels sent to the computer send the signal after the preamp gain knob, the high-pass filter, the three-band EQ, and the channel fader. The effects of the AUX send knobs are NOT included in the outputs of the individual channels. MAIN MIX channels The MAIN mix channels sent to the computer exactly mirror the MAIN output of the mixer. If you are only interested in making stereo recordings, consider recording the MAIN channels in your recording software.
To understand why the AUX signals are not blended into the individual channel feeds to the computer, consider the nature of AUX sends: Every channel can send none, some, or all of its signal to the AUX processors. For instance, in the MultiMix 12, 12 different signals could be sent to an external processor, all at different levels. However, that AUX processor can only return at most a stereo pair into the mixer. Theres no way that the processor could route the effects of each channel back to that channel directly without including the signal from the other channels as well.
The Firewire port receives a stereo audio stream from the computer and assigns it to the 2-TRACK IN left and right channels of your MultiMix mixer. Note that, if a device is connected to the MultiMixs 2-TRACK IN inputs, the signal from this device is merged with the signal from the computer.
Channels returned from the computer to the MultiMix
Sound setup under Windows
To use your MultiMix FireWire as your default Windows sound device, follow these steps: 1. From the Windows Start menu, choose Control Panel. Depending on your Windows preferences, it will appear similar to one of the two pictures below:

Creating a new audio file
Now, youre ready to create an audio project. 1. Choose File | New Project
You can begin with a template or an empty file. For now, begin with an empty file.
3. Cubase needs to know where to place audio. Choose a directory here.
An excellent scheme for storing your projects is to create a directory called audio projects. Then, within that folder, create a new folder for each song you work on. Cubase will store your song file and all associated audio files in that same folder.
Now, you have a blank project. Add an audio track for recording by choosing Project | Add Track | Audio.
Be sure that the inspectora strip on the left-hand side of Cubase that shows all sorts of information about the selected trackis active. If your view is similar to that shown below, the Inspector is active. If you do not see all of the information on the lefthand side, the Inspector is not active. To activate it, press the show Inspector button towards the upper left of the screen (just below the Edit menu in the following picture).
Later, you can hide the Inspector if you want to save space on your screen.
Choose an input for your track by selecting it from the in area on the left. To record stereo on the track, click the button highlighted below.
7. You will do most of your monitoring through the mixer. However, if you want to monitor with Cubases effects, or if you just want to hear what the computer is hearing, press the direct monitoring button next to the Record Enable button.
Note that using direct monitoring causes a small delay as the digital audio is being processed. For this reason, when you use direct monitoring, you may want to press the MultiMixs MIX TO CONTROL ROOM button up so as not to hear the audio signal twice.
Add additional audio tracks as needed. Record-arm each one and press the RECORD button to begin recording.
For additional information, consult your softwares documentation.
Working with the ASIO control panel Accessing the ASIO control panel
From within Cubase, select Devices | Device Setup. | VST MultiTrack. Then, click the Control Panel button to access the MultiMixs ASIO control panel.
You can change the name of the mixer as its seen by the recording program. Once this is done, choose Reset All in Cubase (or the equivalent command in other programs) to make the change to the mixer down flow down to the names of the input and output channels.
Setting the mixer nickname
If multiple audio devices are connected, one must be designated as the clock master.
Setting the master device
Adjusting latency by changing the buffer size
Latency refers to the amount of time it takes for audio to get into and out of the computer. In the best of all possible worlds, there would be no such thing as latencywe would hear audio the moment it was created. However, computers have limited processing power, and they can chokecutting off recording or crashing programsif they are asked to handle too much data all at once. To minimize this risk, audio can be stored in a buffer for a certain amount of time. This buffering helps smooth out the stream of data that the computer needs to handle. In the end, all of the audio is sorted out and played correctly, but with a delay. Here are the basic considerations to consider when adjusting buffer sizes: Lower buffer size = less latency but higher risk of audio problems Higher buffer size = more latency but lower risk of audio problems Very high buffer size = possible system instability For most systems, there is a sweet spot where latency is not too high and system performance is good. Experiment with raising or lowering buffer sizes to hit this sweet spot. As you begin adding plug-in EQ, compression, and so forth to your project, your computer will need to work harder. If you start to hear clicks, pops and other glitches in your audio, consider increasing your buffer size at this time. As a final note, one tremendous benefit that the MultiMix FireWire offers is that you can monitor through it without latency at all. Simply press down the MIX TO CTRL ROOM button, and you can hear what youre recording without havig to worry about your computers settings.

Mac users can impress their friends with the following instructions for using the MultiMix with CoreAudio: 1. 2. 3. 4. Open the Macs Audio MIDI Setup utility. Choose the MultiMix FireWire as both input and output device. Choose the MultiMix as the default input and output. Under System Preferences, choose MultiMix FireWire. Adjust the device nickname, buffers, clock source, sample rate, etc. as needed. For additional information on these settings, see the discussion of the ASIO control panel on page 38.
6 Troubleshooting: non-Firewire
If youre having problems operating the MultiMix 8 FireWire, this troubleshooting index will help you correct them. Symptoms No sound from the mixer. Cause Mixer is not plugged in or turned on. Channel levels are too low. Control room level is turned down The appropriate signal hasnt been assigned to the control room out. Cable is not plugged into output jack. Headphones are not plugged into PHONE jack. Monitor or headphone amplifier is turned off or down. Bad cable. Audio signal is distorted. Channel level is too high. Channel input is too high. Solution Plug in mixer and turn it on. Turn up channel levels. Turn up control room level. In the master section of the mixer, be sure the right switch is selected. Check outputs to make sure cables are plugged in securely. Plug headphones into PHONE jack. Turn amplifier on or up.
Check all cables; substitute cables with known good ones. Set channel levels using the procedure on page 12. Turn down your instrument to a normal volume and then set channel levels using procedure on page 12. Lower the level of AUX RET A or B in the master section of the mixer. Turn down the MAIN MIX level control in the master section of the mixer.
AUX RET level is too high.
MAIN MIX level is too high.
Troubleshooting: non-Firewire
Audio signal carries an unwanted hum.
Too much low-level noise in the mix. Interference from appliances such as air conditioners. Not using TRS cables.
Engage the channels high-pass filter by pressing the HPF switch. Engage the channels high-pass filter by pressing the HPF switch. Make sure you are using 1/4 TRS cables. Turn on phantom power using the switch on the rear panel of the mixer. Test the microphone on other audio devices. If you detect damage, contact the manufacturer or dealer. Turn up channel level. Turn up the instruments volume control. If problem persists, check the instrument by plugging headphones into the instruments phone jack. Adjust the channels GAIN control. Turn up the level using the EFFECTS / AUX RET B LEVEL control in the master section of the mixer. Press the EFFECTS knob on the desired effect and make sure the SIG indicator is lit.
Microphone level is too low.
Phantom power is not turned on. Microphone is damaged.
No or low sound from a channel.

For instructions for checking on this basic connectivity, see page 28 (Windows) or page 36 (Macintosh).
The best way to see that your MultiMix is connected and operating properly is through the Windows Device Manager. This is a powerful Windows component that requires some navigation but yields very detailed information. 1. Start by finding the My Computer icon either on your desktop or from the Start menu.
Advanced troubleshooting under Windows
Right-click the My Computer icon and select Properties.
Troubleshooting: Firewire
The active tab at the top of this window is now the General tab. Click the Hardware tab. Then, click the Device Manager button.
Finally, expand the Sound, video and game controllers section. MultiMix Audio should appear.
No connection If MultiMix Audio does not appear, Windows does not see the mixer as being connected to the computer. Check your Firewire cable and try powering the mixer off and on again. Expand the IEEE 1394 Bus host controllers section. Check that your Firewire card is listed as properly working. As a last resort power your computer off and on. Faulty connection If MultiMix Audio appears, but there is a yellow question mark or exclamation point attached to it, the drivers are improperly installed. Right-click on the MultiMix Audio listing, choose Uninstall, and uninstall the device. The next time you connect the MultiMix to your computer, you will need to re-install the drivers from scratch.
When restarting your computer, turn it off all the way. Pull out the AC power cord, keep it out for a few seconds, and then plug it back in again before you restart your computer. This step helps reset your computers PCI cards, including any Firewire cards.
Audio playback or recording is at the wrong speed
Adjust the buffers in the ASIO control panel or through your WDM applications audio setup options. It is impossible to say which buffer settings are perfect for each system, but generally buffer sizes around the middle or low-middle of the available range provide the best results.
Audio playback or recording stutters or drops out
Again, work with the buffer settings in the ASIO control panel or through your WDM applications audio setup options in order to find the most reliable setting. Many audio applications include advanced setting dialog boxes where pre-fetch and other parameters can be set. Explore those options.
Help on the web Most major recording programs are supported by lively user forums. The odds are that, if youre having problems, someone who posts at these forums has already experienced them and found solutions. Dont be shy about visiting these forums and posting your questions.

dry dynamic microphone effects processor

EQ (equalizer)

The measure of extra amplification applied to an audio signal. Channels on your MultiMix 8 FireWire have gain controls, which are useful for boosting mic and line signals. The amount of power driving an audio signal. The most common names given to levels of varying voltage are, from lowest to highest, microphone level, instrument level and line level. The section of a mixer where the main mix is controlled. An amplifier that boosts a microphone-level signal up to line level. A device whose purpose is to combine and output a number of audio signals, allowing various types of signal manipulation. Refers to an audio signal that has only one channel. The opposite of stereo. A control that lets you position a mono signal within the stereo spectrum by altering the level of the signal being sent to the left channel as opposed to the right. A way of providing power to condenser microphones. Called phantom because the power isnt apparent to dynamic microphones when you connect them to an input that provides phantom power. Describes an aux send that sends a signal that already has passed through the channel fader. Describes an aux send that sends a signal that has not passed through the channel fader. A line input whose function is to carry back to the mixer an audio signal that has been sent from the mixer. Usually used in the application of effects. A line output whose function is to send a signal from the mixer to an external device, usually an effects processor. Refers to an audio signal that has two channels. Refers to the setting of an audio channel at which the signal leaves the channel at the same level at which it entered. An audio signal that has had effects or other manipulations applied. The opposite of dry.
master section mic preamp mixer mono (monaural) pan

phantom power

post-fader pre-fader return
send stereo unity gain wet

Contact

Alesis Contact Information
Alesis Distribution, LLC Los Angeles, CA USA E-mail: Web site: support@alesis.com http://www.alesis.com
MultiMix 8 FireWire Reference Manual Revision 1.0 by Edwin Erdmann, Fred Morgenstern Copyright 2005, Alesis Distribution, LLC. All rights reserved Reproduction in whole or in part is prohibited. MultiMix and MultiMix FireWire are trademarks of Alesis, LLC. Specifications subject to change without notice.

Trademarks

All trademarks are the property of their respective owners. Specifically: Windows and Windows XP are trademarks of Microsoft Corporation. ASIO and Cubase are trademarks of Steinberg Media Technologies GmbH. Sonar is a trademark of Twelve Tone Systems, Inc. Apple, Mac, OS X, and CoreAudio are trademarks of Apple Corporation. 7-51-0196-A 8/03/2005

7-51-0196-A

How to Use This Manual

This manual is divided into the following sections describing the various functions and applications for the MultiMix 8 USB. While it's a good idea to read through the entire manual once carefully, those having general knowledge about mixing should use the table of contents to look up specific functions. Chapter 1: Getting Started shows you how to include the MultiMix 8 USB in your audio setup for recording and live applications. Weve included a hookup diagram, guidelines for which cables to use and the vital steps you must take to set levels properly. Chapter 2: A Tour of the MultiMix describes the MultiMix 8 USB piece by piece. This chapter also features diagrams of the mixer to help you find each component as you read about it. Chapter 3: Digital Effects Processor explains the effects provided by the on-board digital effects processor. If you want to know what a certain effect will do to your sound before you select it, this is where you should look. Chapter 4: Applications outlines a number of scenarios in which you can use the MultiMix 8 USB, including some tips on what goes where when youre hooking everything up. Chapter 5: Troubleshooting can give you a hand if youre experiencing problems with your mixer. Youll find that most issues can be resolved simply and quickly with the push of a button. Chapter 6: Specifications and Chapter 7: Block Diagram are full of technical information for the more advanced users. And at the end of this manual youll see a glossary of common mixing-related terms and a page about the MultiMix 8 USBs warranty.
A Few Words for Beginners
We realize that some of you who have purchased the MultiMix 8 Helpful tips and advice art of mixing, in USB are fairly new to theare highlightedandaweve written this shaded box like in mind. We also designed the MultiMix 8 USB to manual with that this. be both powerful and easy enough to use that even a beginner can quickly pick up the basics. Many mixer manualsand manuals for just about any electronic instrument for that matterare full of complicated terminology and incomplete instructions that presume a lot of experience on the part of the reader. We try to avoid that with this manual. True enough, you will find all the technical lingo and specifications you can handle in here, but we do our best to make this accessible to you. When something important appears in the manual, will find several elements the one Beginnersan exclamation mark (like of this manual especially shown at left) will appear with some useful. Keep your eye out for the tips found in the gray boxes on explanatory of the page. Be sure to check out the right side text. This symbol indicates that the hookup diagrams on page is vital when operating the ideas on how to fit this information 7, which will give you some the mixer into your audio setup after youve taken a tour of the MultiMix 8 USB. mixer in Chapter 2. And if you come across any terms that you havent seen before, the glossary probably can help you out.

Helpful tips and advice are highlighted in a shaded box like this.
One of the most important things youll do before you begin a mixing session is to set the levels. Be sure to refer to the instructions on page 16.
When something important appears in the manual, an exclamation mark (like the one shown at left) will appear with some explanatory text. This symbol indicates that this information is vital when operating the MultiMix 8 USB.
We realize that some of you who have purchased the MultiMix 8 USB are fairly new to the art of mixing, and weve written this manual with that in mind. We also designed the MultiMix 8 USB to be both powerful and easy enough to use that even a beginner can quickly pick up the basics. Many mixer manualsand manuals for just about any electronic instrument for that matterare full of complicated terminology and incomplete instructions that presume a lot of experience on the part of the reader. We try to avoid that with this manual. True enough, you will find all the technical lingo and specifications you can handle in here, but we do our best to make this accessible to you. Beginners will find several elements of this manual especially useful. Keep your eye out for the tips found in the gray boxes on the right side of the page. Be sure to check out the hookup diagrams on page 7, which will give you some ideas on how to fit the mixer into your audio setup after youve taken a tour of the mixer in Chapter 2. And if you come across any terms that you havent seen before, the glossary probably can help you out.

1 Getting Started

Hooking up the MultiMix 8 USB
This diagram will help you get the MultiMix 8 USB hooked up and ready to go. The equipment you use depends on personal preference and on whether youre performing live or recording. For example, youll see below that the MAIN MIX OUT can be routed to a recording device for recording, or to a PA system for live performance.
Be sure to follow the guidelines for which cables to use (further down this page) and the procedure for setting levels (on the next page) before you begin mixing.

Getting Started

Use a USB cable to connect the USB port to a computer. Do not use a USB hub, as hubs can introduce timing glitches in USB communication.

Setting Levels

Before you can begin mixing different audio sources with your MultiMix, you must set the level for each channel youre using. This helps to prevent distortion and clipping. The idea is to get the strongest signal possible without clipping. Heres how: 1. Turn the channel level control to the 12:00 position. 2. Turn the AUX SEND and GAIN controls all the way down, and turn the EQ knobs to the center detent (youll feel a click). 3. Connect the source of the signal to the channels input. 4. Play the instrument at a normal level and adjust the channels gain slowly until the PEAK LED lights. 5. Slowly reduce the channels gain until the PEAK LED no longer lights when you play. 6. If you need to apply EQ, do so and check the PEAK LED to make sure it still does not light as you play.

Using Proper Cables

When connecting instruments and other equipment to the MultiMix, its important that you use the appropriate types of cables. Here are some simple but important guidelines: For the mic inputs, use XLR cables. For the line inputs and all other 1/4 connections, use 1/4 mono TRS cables. Use stereo RCA cables for the 2-track in and out.
2 A Tour of the MultiMix USB
In this chapter, youll learn all about the MulitMix-8FXs components (except for the digital effects processor, which is explained in the next chapter). Please refer to the diagrams as you read each section to see which components were talking about.
A Tour of the MultiMix USB
Line Inputs (Channels 5 8)
Unlike channels 1 4, the line inputs on channels are stereo inputs that have left and right inputs. If youre using one of these channels as a mono input, plug your instrument into the left input. Channels dont have the extra gain found on channels because most line-level instruments dont require the extra boost. MIDI and other electronic instruments will work especially well on these channels. These inputs are also good for connecting CD players or tape decks, as these audio sources dont require extra gain.

Patchbay

At the rear portion of the top of the MultiMix 8 USB, youll find the patchbay. This is where you plug in instruments, signal processors, multitrack recorders and other devices. Whatever you need to connect to the mixer, this is where its done. In the following paragraphs, we tell you all about the inputs, outputs, switches and knobs you see in this section of the mixer.

PHONE Jack

The headphone jack accepts 1/4 jacks. If your headphones are 1/8, you can find a 1/8 to 1/4 adapter in most electronics stores.

AUX RETURNS

These are the 1/4 jacks where you connect the outputs of an external effects processor or other audio source. Each aux return gives you 15dB of gain that can be controlled by the AUX RET A and EFFECTS / AUX RET B LEVEL knobs in the mixers output section.
Although chances are your microphones will work fine with these mic inputs, we recommend that you do some checking up on the type of microphone youre using, especially if its one of the older vintage models. Verify that your microphone requires phantom power and make sure its output is low impedance, balanced and floating.
Mic Inputs (Channels 1 4)
The MultiMix uses standard XLR-type mic inputs. These provide +48V phantom power that you can turn on and off with the Phantom On switch located on the rear of the mixer. You probably will have to turn on the phantom power when youre using most condenser mics, as these usually require the extra voltage (unless the mic has its own power source, such as a battery). Dynamic and ribbon mics dont require phantom power and are unaffected when the power is on. These high-quality mic inputs also feature up to 50dB of preamp gain that you can adjust with the Gain knob. Another useful feature of these mic inputs is a high-pass filter (HPF) that can be turned on and off with the HPF switch. When you activate this switch, all frequencies below 75Hz are cut from the signal. This is useful for mic or line signals that dont have much bottom end, such as vocals, snares, cymbals and electric guitar. Youll want to leave this inactivated for instruments like basses and kick drums.
If you are using an effects device with only a mono output, plug it into the left return of STEREO AUX RETURN. It will appear in the center of the stereo spectrum, and not to the left.

AUX SENDS

And these is the 1/4 jacks where you connect the lines that are going into the input of an external effects processor. The aux sends give you 10dB of gain that can be controlled in the AUX section of each channel input.

2-TRACK

The 2-TRACK IN and OUT jacks are standard RCA jacks. Youll use the OUTs for mixing to a tape deck or other recorder. With the INs you can bring in a signal, which can be monitored and even added to the main mix via the 2TK TO MIX switch in the master section of the mixer.
Line Inputs (Channels 1 4)
The line inputs, marked LINE IN, are balanced 1/4 jacks that offer the same 50dB of preamp gain and the high-pass filter provided by the mic inputs (however, phantom power does not apply to line inputs). These inputs accept line-level instruments such as keyboards and drum machines. If you find that your instrument has a weak line signal, just plug it into channels and crank it up with the Gain knob.

Always connect your microphones before activating phantom power. Microphones tend to be very sensitive, and the sudden power surge can do permanent damage to the mics circuitry. Its also a good idea to lower mixer levels before you activate phantom power.

MAIN MIX OUT

These 1/4 jacks are where the signal on the main mix bus leaves the mixer. From there you can send it to a recorder or a PA system. The level of this signal is controlled by the MAIN MIX level control.

CTRL RM OUT

You can use these 1/4" jacks to send the control room signal to the input of the amplifier driving your monitors or headphones. This output usually carries the main mix. However, if you engage the 2TK TO CTRL ROOM switch, the CTRL RM OUT will carry the signal present at the 2-TRACK inputs.

Channel Strips

The eight channel strips are virtually identical to each other, with the only difference being that channels are mono and channels are stereo. Each channel strip contains the following components.
The MultiMix gives you three bands of EQ per channel. Using these knobs, you can tailor the channels signal by boosting some frequencies and cutting others. The LO and HI controls are shelving controls with fixed frequencies of 75 Hz and 12 kHz respectively. The MID control has a peaking response fixed at 2.5 kHz. Shelving means that the mixer boosts or cuts all frequencies past the specified frequency. Peaking means that frequencies above and below the specified frequency fall off, forming a peak in a graphical representation.

Level Control

The level control knob controls how much of the signal from the mic or line inputs is sent to the channel. To adjust the level, simply turn the knob to the desired level. In the leftmost position, levels are cut completely, and in the rightmost position you get an additional 10dB of gain.

Master Section

The Master Section is the heart of the mixer, where the channel inputs and aux returns all are mixed together and routed in various ways.

PAN or BAL

This controllabeled PAN on the mono channels and BAL on the stereo channelslets you assign the channel to a particular spot within the stereo spectrum. If you turn this knob to the left, you can hear the signal move to the left, and if you turn it to the rightyou get the picture. The pan controls do this by adjusting the amount of the signal being sent to the left main mix bus versus the right main mix bus. The balance controls do it by controlling the relative balance of the left and right channel signals being sent to the left and right main mix buses.

Main Mix

The signals from all channels and aux sends are sent to the main mix. The MAIN MIX level control is the one youll use to control the overall level of those combined signals. This knob affects the levels of the signals sent to the MAIN MIX OUT and the 2TRACK OUT. In its leftmost position the signal is cut off completely, and in the rightmost position you get an additional 10dB of gain.

PEAK LED

This indicator lets you know when the channels signal is clipping. This light plays an important role in setting channel levels by helping you know when to reduce the channels gain.

2TK To Mix

When you press this switch, the signal coming in through the 2TRACK IN gets routed to the MAIN MIX, joining whichever other signals are already part of the main mix. Used this way, the 2-TRACK IN effectively becomes another stereo channel (but without all the extras like pan, EQ, etc.).
Here youll find knobs that control the levels of aux sends A and B. AUX A is pre-fader, which means that the AUX A send is affected only by the EQ and HPF settings. A pre-fader send is usually used for cue sends (for example, sending a signal to headphones while recording, for which you may not want the fader to alter the channels level). AUX B is post-fader, which means that the AUX B send is affected by the fader (or level control knob in this instance), EQ and HPF settings. A post-fader send is generally used for sending the signal to an external effects device (so that the fader controls the signal level). Like AUX A, AUX B can be used for routing signals to external devices. And when you are using the onboard effects processor, AUX B is used to control the level of the channels signal being routed to the processor.

HDPH / CTRL RM

The HDPH / CTRL RM knob controls the level of the signal being sent to the CTRL RM OUT and the PHONES output. The level of this signal is represented by the LED meters. The CTRL RM in the name of this knob refers to the fact that it controls the signal that typically is sent to the control room monitors of a studio, where someoneusually an engineeris working the mixer. However, dont be intimidated if youre using this mixer in your bedroom, which probably isnt equipped with a control room. In this scenario, you can use headphones or connect the CTRL RM OUT to your speakers.

2TK TO CTRL ROOM Switch

When you engage this switch, the signal coming in from the 2TRACK jacks is routed to the headphones and to the control room output. This level is controlled by the HDPH / CTRL ROOM level control and cancels out any signal from the main mix.

Rear of the Mixer

Heres what youll find at the rear of the mixer.

AUX RETURN A LEVEL

This is the level control for the signal returning to the mixer via AUX RETURN A.
EFFECTS / AUX RET B LEVEL
If you are using one of the MultiMix 8 USBs internal effects, this knob controls the effect level. If AUX SEND B is connected to an external device, this knob controls the level for AUX RETURN B.

Power Input

Heres where you plug in your mixers external power supply. You should always connect your power supply to the mixer before you plug the power supply into an electrical outlet.
The POWER INPUT is built to accept only the power supply unit provided with your MultiMix 8 USB, or an AC power supply that has the same specs. Others probably will not work.

LED Meters

These are the two rows of yellow, green and red lights you see in the master section of the mixer. The LED meters allow you to view the signal level of the main mix and 2-TRACK IN depending on which signal you have routed to the control room mix.

Power Supply Unit

This unit provides 18.5 VAC at 700 mA, more than enough to keep your MultiMix 8 USB running smoothly. As with nearly all power supply units, this one tends to get warm when left on for a while. This is perfectly normal.

POWER Indicator

When this LED is lit up, that means the POWER ON switch on the rear of the mixer has been activated.

Power On

Another easy one. Switch this one on and your mixer has power. Switch it off and it doesnt. Make sure that all master output knobs are turned all the way down when powering your mixer up or down.

+48V Indicator

When this one is lit up, that means the PHANTOM ON switch on the rear of the mixer has been activated and is supplying +48V phantom power to all XLR mic inputs.

Phantom On

This switch activates and deactivates the phantom power described in Mic Inputs (Channels 1 4), page 9. This switch controls phantom power for all four mic inputs.
As we said earlier, its very important that you plug in your microphones and mute your system before you turn on phantom power.

USB port

This port allows you to connect the Multimix to a computer for 2way, stereo digital audio communication.

Applications

Using the Multimix USB with a Computer
Your Alesis Multimix mixer comes with a Full Speed USB port which you can connect to a computer. This USB connection allows you to send CD-quality (stereo, 16-bit, 44.1 kHz) audio between the computer and your Multimix mixer. This feature allows you to use the Multimix USB as a highly flexible external soundcard. Use the computers built in audio recorderor use dedicated Digital Audio Workstation software to record and play back CD-quality audio within your computer. A 2-meter USB cable is included. If you need to connect the Multimix across a longer distance, we recommend that you purchase a longer USB cable, as using hubs and other extenders with USB audio often causes glitches and other problems.

Simple Recording Setup

Sending and Receiving Audio Data
The USB port sends the Multimixs MAIN OUT/TAPE OUT left and right signals to the computer. The USB port receives a stereo audio stream from the computer and assigns it to the TAPE IN left and right channels of your Multimix mixer. Note that, if a device is connected to the Multimixs TAPE IN inputs, the signal from this device is merged with the signal from the computer.

Simple Live Setup

This is similar to the recording setup. In a live setup, you most likely will connect the MAIN MIX OUT to a PA system amplifier and the CTRL RM OUT to a headphone amplifier for monitoring purposes. Try connecting an external effects processor to the MultiMixs send and receive. Your headphones will allow you to audition a channel before you bring it into the mix, making sure the levels are OK before the audience hears it.
Precautions when using the USB connection
Using Additional External Audio Sources
The MultiMix 8 USB gives you 8 audio inputs in all. If you want to bring external audio sources into a recording or live mix, you can do it in several different ways. Using the 2-TRACK IN, you can add a tape deck, ADAT, CD player or other source to the mix. The 2-TRACK IN also can be used to entertain the audience with a CD as the band is setting up for a live show. The AUX RETURNS can be used as additional audio inputs when you are not using them for effects.
To ensure that the Multimix is recognized correctly by your computer, always turn the Multimix on a few seconds before inserting the USB cable into the computer. When powering up both your computer and the Multimix, turn on the Multimix first and the computer second. When powering down your computer and the Multimix, turn off the computer first. Wait to turn off the Multimix until the computer has shut down.
Connection instructions for Windows (XP , 2000, ME, and 98 Second Edition)
Upon first sensing the Multimixs USB input, Windows XP and Windows 2000 automatically recognize the Multimix and proceed to install USB audio codec drivers. Windows ME and Windows 98 Second Edition may require you to insert your Windows disc, after which the drivers should load correctly. [verify this] After the Multimix has been recognized and its drivers have been installed, open the Control Panel. Select Sounds and Audio Devices (or Multimedia), go to the Audio tab, and select the USB audio codec as your default sound recording and sound playback device.

Audio signal carries an unwanted hum.
Too much low-level noise in the mix. Interference from appliances such as air conditioners. Not using TRS cables.
Engage the channels high-pass filter by pressing the HPF switch. Engage the channels high-pass filter by pressing the HPF switch. Make sure you are using 1/4 TRS cables. Turn on phantom power using the switch on the rear panel of the mixer. Test the microphone on other audio devices. If you detect damage, contact the manufacturer or dealer. Turn up channel level. Turn up the instruments volume control. If problem persists, check the instrument by plugging headphones into the instruments phone jack. Adjust the channels GAIN control. Turn up the level using the EFFECTS / AUX RET B LEVEL control in the master section of the mixer. Press the EFFECTS knob on the desired effect and make sure the SIG indicator is lit.
Microphone level is too low.
Phantom power is not turned on. Microphone is damaged.
This page intentionally left blank External effects arent working. Effects processor is not plugged in or turned on. Aux outputs of mixer arent connected to inputs of processor or processors outputs arent connected to mixers inputs. Mixers effects return signal is too low. Make sure unit is plugged in and turned on. Make sure the mixers aux outputs are connected to the processors inputs and that the processors outputs are connected to the mixers aux inputs. Turn up the output of the effects processor or turn up the mixers AUX RET A LEVEL or EFFECTS / AUX RET B LEVEL in the master section. Press the desired MIX or 2 TK To Mix button. Unplug the USB cable and turn off the Multimix. Turn the Multimix back on and plug the cable back in. If this does not work, leave the Multimix on, turn off the computer (do not use restart but instead actually turn off the computer) and then turn it on again. In the computers Control Panel, go to the Sounds/Multimedia area. In the Audio section, set the default sound recording and playback devices to USB audio codec. If you are using a USB hub, disconnect the Multimix from it and connect the mixer to the computer directly instead. Certain USB chipsets have design limitations or IRQ assignment restrictions that must be resolved before audio can work correctly on them. See your USB chipset documentation for further information if required. Replace with correct power supply (only use Alesisrecommended AC output power supply).
LED meters not working. Computer does not see the Multimix.
Nothing is routed to the HDPH/CTRL RM output. USB connection must be established.
Computer sees the Multimix Multimix USB is not set as USB, but no sound is received primary sound device. and/or transmitted.

USB audio has crackling or glitches, or audio plays/records at incorrect pitch.

USB hub may be in use.

Computer configuration may be incompatible with USB audio.

No power.

Incorrect or defective power supply.

6 Specifications

For the more technical-minded, here are some detailed specifications for the MultiMixs operating levels. Input Channels Mic In Sensitivity Range: Line In Sensitivity Range: Mic/Line Gain Range: Equalization High-Pass Filter: High Shelving: Mid Bandpass/Band Reject: Low Shelving: -60dBu to 10dBu nominal, +5dBu maximum -40dBu to -+10dBu nominal, +25dBu maximum +10 to +60dB 75Hz, 18dB/octave 12kHz, +/- 15dB 2.5 kHz, +/- 15dB 80Hz, +/- 15dB

Specifications

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All measurements done over a 22Hz 22kHz range with a 1kHz sine wave at +18dBu (-1dBFS) input. Impedances are measured at 1kHz.
Aux Sends Aux Send A & B Gain Range: - to +10dB Aux Returns Aux Return A Gain Range: Effects Level/ Aux Return B Gain Range: Channel Levels Channel Level Gain Range: Master Levels Main Mix, Ctrl Room Gain Range: 1/4 Inputs Stereo Aux Return Level: RCA Inputs Tape In Level: 1/4 Outputs Main Mix, Ctrl Room, Ext Aux Send Level: Headphone Output: - to +15dB - to +15dB - to +10dB
- to +10dB +4dBu nominal, +20dBu maximum -10dBV nominal, +5dBV maximum
+4dBu nominal, +20dBu maximum 75 ohm output impedance >105mW into 75 ohms, >40mW into 600ohms -10dBV nominal, +5dBV maximum
RCA Outputs Tape Out Level:

7 Block Diagram

Block Diagram

Glossary

Here are the definitions to some terms youll probably encounter while using your MultiMix 8 USB. Term aux (auxiliary) balance bus channel channel strip clipping codec condenser microphone dB (decibel) detent Definition An additional set of outputs and inputs found on many mixers. These allow the addition of external effects and other audio sources. A control that lets you control the position of sound in a stereo signal by altering the relative levels of the left and right channels. The electrical component that carries signals from multiple sources to a single destination such as an amplifier. A path through which an audio signal flows. A section of a mixer on which reside controls like a fader, EQ and pan for manipulating the signal of an input channel. The cutting of an audio signal caused by a level that is too great for a mixer circuit to handle. Compression/decompression algorithm. Different CODECs are used by different digital audio devices and file formats. A type of high-quality microphone that produces a weak signal, usually requiring an external power source like the ones provided by your MultiMix 8 USBs XLR mic inputs. A common unit of measure for audio. A point of resistance in the path that a mixer knob or fader travels. Detents are used to mark important settings. As you turn the knob or slide the fader, youll feel it click into the detent. Term used to describe an audio signal free of effects. The opposite of wet. A common type of microphone that does not require external power. Dynamic microphones are generally cheaper than condenser microphones. A unit whose purpose is to provide effects for audio signals. Some common effects include reverb, chorus, flange and delay. Effects processors come in many shapes and sizes, from small pedals up to rectangular rackmount units. The part of your mixer (or other device) that manipulates an audio signal by lowering the level of some frequencies and increasing the levels of others. EQ is used to fine-tune a signals highs and lows.

The measure of extra amplification applied to an audio signal. Channels on your MultiMix 8 USB have gain controls, which are useful for boosting mic and line signals. The amount of power driving an audio signal. The most common names given to levels of varying voltage are, from lowest to highest, microphone level, instrument level and line level. The section of a mixer where the main mix is controlled. An amplifier that boosts a microphone-level signal up to line level. A device whose purpose is to combine and output a number of audio signals, allowing various types of signal manipulation. Refers to an audio signal that has only one channel. The opposite of stereo. A control that lets you position a mono signal within the stereo spectrum by altering the level of the signal being sent to the left channel as opposed to the right. A way of providing power to condenser microphones. Called phantom because the power isnt apparent to dynamic microphones when you connect them to an input that provides phantom power. Describes an aux send that sends a signal that already has passed through the channel fader. Describes an aux send that sends a signal that has not passed through the channel fader. A line input whose function is to carry back to the mixer an audio signal that has been sent from the mixer. Usually used in the application of effects. A line output whose function is to send a signal from the mixer to an external device, usually an effects processor. Refers to an audio signal that has two channels. Refers to the setting of an audio channel at which the signal leaves the channel at the same level at which it entered. An audio signal that has had effects or other manipulations applied. The opposite of dry.
master section mic preamp mixer mono (monaural) pan

phantom power

post-fader pre-fader return
dry dynamic microphone effects processor
send stereo unity gain wet

EQ (equalizer)

Warranty / Contact

Alesis Limited Warranty

ALESIS CORPORATION ("ALESIS") warrants this product to be free of defects in material and workmanship for a period of one (1) year for parts and for a period of one (1) year for labor from the date of original retail purchase. This warranty is enforceable only by the original retail purchaser and cannot be transferred or assigned. For the most effective service, the purchaser should register the purchase on the ALESIS website at http://www.alesis.com/support/warranty.htm. During the warranty period ALESIS shall, at its sole and absolute option, either repair or replace free of charge any product that proves to be defective on inspection by ALESIS or its authorized service representative. In all cases disputes concerning this warranty shall be resolved as prescribed by law. To obtain warranty service, the purchaser must first call or write ALESIS at the address and telephone number available on the Alesis Website to obtain a Return Authorization Number and instructions concerning where to return the unit for service. All inquiries must be accompanied by a description of the problem. All authorized returns must be sent to ALESIS or an authorized ALESIS repair facility postage prepaid, insured and properly packaged. Proof of purchase must be presented in the form of a bill of sale, canceled check or some other positive proof that the product is within the warranty period. ALESIS reserves the right to update any unit returned for repair. ALESIS reserves the right to change or improve design of the product at any time without prior notice. This warranty does not cover claims for damage due to abuse, neglect, alteration or attempted repair by unauthorized personnel, and is limited to failures arising during normal use that are due to defects in material or workmanship in the product. THE ABOVE WARRANTIES ARE IN LIEU OF ANY OTHER WARRANTIES OR REPRESENTATIONS WHETHER EXPRESS OR IMPLIED OR OTHERWISE, WITH RESPECT TO THE PRODUCT, AND SPECIFICALLY EXCLUDE ANY IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY OR OTHER IMPLIED WARRANTIES. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. IN NO EVENT WILL ALESIS BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT OR OTHER DAMAGES RESULTING FROM THE BREACH OF ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING, AMONG OTHER THINGS, DAMAGE TO PROPERTY, DAMAGE BASED ON INCONVENIENCE OR ON LOSS OF USE OF THE PRODUCT, AND, TO THE EXTENT PERMITTED BY LAW DAMAGES , FOR PERSONAL INJURY. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. THIS CONTRACT SHALL BE GOVERNED BY THE INTERNAL LAWS OF THE STATE OF CALIFORNIA WITHOUT REFERENCE TO CONFLICTS OF LAWS. This warranty gives you specific legal rights, and you may also have other rights required by law which vary from state to state. This warranty only applies to products sold to purchasers in the United States of America or Canada. The terms of this warranty and any obligations of Alesis under this warranty shall apply only within the country of sale. Without limiting the foregoing, repairs under this warranty shall be made only by a duly authorized Alesis service representative in the country of sale. For warranty information in all other countries please refer to your local distributor.

Warranty/Contact

Alesis Contact Information
Alesis Distribution, LLC Los Angeles, CA USA E-mail: Web site: support@alesis.com http://www.alesis.com
MultiMix 8 USB Reference Manual Revision 2.0 by Edwin Erdmann, Fred Morgenstern Copyright 2004, Alesis Distribution, LLC. All rights reserved Reproduction in whole or in part is prohibited. MultiMix 8 USB is a trademark of Alesis Distribution, LLC. Specifications subject to change without notice. 7-51-0178-A 4/05/2004

7-51-0178-A