Reference Manual
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Table Of Contents
Introduction .................................................................. |
3 |
Welcome!...................................................................................................... |
3 |
DEQ830 Key Features .................................................................... |
4 |
How to Use This Manual................................................................ |
5 |
Important Safety Instructions.................................. |
7 |
Important Safety Instructions (English)................................... |
7 |
Safety symbols used in this product......................................................... |
7 |
Please follow these precautions when using this product: ................... |
7 |
Instructions de Sécurité Importantes (French) ...................... |
9 |
Symboles utilisés dans ce produit............................................................. |
9 |
Veuillez suivre ces précautions lors de l’utilisation de |
|
l’appareil: ...................................................................................................... |
9 |
Lesen Sie bitte die folgende Sicherheitshinweise |
|
(German) ........................................................................................... |
11 |
Sicherheit Symbole verwendet in diesem Produkt................................. |
11 |
Folgen Sie bitte diesen Vorkehrungen, wenn dieses |
|
Produkt verwendet wird: ........................................................................... |
11 |
CE Declaration of Conformity ..................................................... |
13 |
FCC Compliance Statement ......................................................... |
13 |
Chapter One: Quick Start Guide .............................. |
15 |
If you can't wait to get started.................................................................. |
15 |
Step 1: Hook it up to a mixer........................................................ |
15 |
Step 2: Try some equalization ...................................................... |
16 |
Step 3: Store the Program............................................................. |
16 |
Step 4: Save an EQ Curve.............................................................. |
17 |
DEQ830 Diagram............................................................................. |
18 |
Chapter Two: Connections ........................................ |
19 |
Unpacking and Inspection............................................................ |
19 |
Installing in a Rack ........................................................................ |
19 |
Thermal Considerations in Rack Mounting ............................. |
19 |
AC Power Hookup........................................................................... |
20 |
Using the DEQ830 in another country................................................... |
20 |
Connecting Inputs and Outputs .................................................. |
21 |
Connecting to the Channel or Main Inserts of a mixing |
|
console.......................................................................................................... |
21 |
Connecting to the inserts on an instrument amplifier .......................... |
23 |
Connecting to equipment with XLR inputs and outputs ..................... |
23 |
Connecting to equipment with ADAT Optical inputs and |
|
outputs.......................................................................................................... |
23 |
About Audio Cables ........................................................................ |
25 |
Chapter Three: Basics of Equalization................... |
27 |
What is equalization? ..................................................................... |
27 |
Description of the Front Panel .................................................... |
28 |
Description of the Basic Modes ................................................... |
31 |
Basic operation: Program mode .................................................. |
34 |
1
Basic operation: Edit mode........................................................... |
34 |
Basic operation: Store mode......................................................... |
41 |
Basic operation: Save Curve mode ............................................. |
41 |
Basic operation: Retrieve Curve mode ...................................... |
41 |
Basic operation: Channel Level mode........................................ |
42 |
Basic operation: Link mode.......................................................... |
42 |
Basic operation: Real Time Analyzer mode.............................. |
43 |
Basic operation: Utility mode ...................................................... |
45 |
System Exclusive Transmit (Send?).................................................. |
48 |
Receiving System Exclusive bulk dumps................................................. |
49 |
The "Hidden" Modes........................................................................ |
50 |
Demonstration mode................................................................................. |
50 |
Lock mode................................................................................................... |
50 |
Equalization Artifacts.................................................................... |
51 |
Constant Q vs. Variable Q ............................................................. |
52 |
Chapter Four: Applications....................................... |
57 |
General EQ tips ............................................................................... |
57 |
Filtering effects ............................................................................... |
58 |
Settings chart................................................................................... |
59 |
Chapter Five: Troubleshooting ................................ |
61 |
Line Conditioners and Protectors .............................................. |
61 |
Care and Maintenance................................................................... |
61 |
Troubleshooting Index .............................................................................. |
62 |
Specifications................................................................... |
65 |
Audio Performance .................................................................................... |
65 |
Mechanical ................................................................................................... |
65 |
Warranty/Contact Alesis ............................................ |
67 |
Alesis Limited Warranty............................................................................. |
67 |
Alesis Contact Information....................................................................... |
68 |
2
Introduction
Welcome!
Thank you for purchasing the Alesis DEQ830. It is a versatile product, and whether it becomes a part of your studio or finds its place in your live setup, we know it will serve you well. 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 achieve with them.
One of the goals of Alesis is to make high-quality music technology available to everyone. This Reference Manual is an important part of that, because in it we try to present the DEQ830’s features in a way that is easy to understand and remember. But even beyond explaining each feature and parameter, this manual can be a key that unlocks an application for the DEQ830 that you may not have considered. 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 goals.
Sincerely,
The people of Alesis
For more effective service and product update notices, please register your DEQ830 online at:
http://www.alesis.com/ support/warranty.htm
3
DEQ830 Key Features
1.Offers the best of digital technology and analog-style control: a graphic display with instant editing of any band or combination of bands, plus the ability to store programs
2.100 user-definable programs, each of which holds 8 channels of EQ settings
3.100 user-definable curves, each of which holds 30 bands of EQ settings
4.48 KHz sampling rate, 24-bit A/D/A, 28-bit internal processing
5.Eight channels of equalization, independent or linkable
6.30 EQ bands per channel, spanning 25 Hz-20 KHz in 1/3- octave increments
7.+/- 12 dB boost/cut with center detente
8.Constant Q technology for finer control of audio
9.LOCK function for “set and forget” situations, which prevents accidental reprogramming
10.Retrieve Curve mode for auditioning and selecting stored EQ curves
11.Individual Channel Level adjustment per program
12.Master Level adjustment
13.[LINK] button for quick creation of matched EQ curves
14.Ability to bypass any or all channels using [BYPASS] and
[BYPASS ALL] buttons
15.Configurable editing modes to suit the way you work
16.Ability to copy settings from one channel to another
17.Easy-to-read 7-segment Numerical LED Display
18.More than 350 Band Gain LEDs, making it easy to read EQ curves from a distance
19.Signal Level, Clip and Bypass LEDs for each channel
20.Balanced input/output (TRS)
21.Compact 1-space rackmount profile
22.Real-time Analyzer (RTA) mode for visual feedback of incoming and outgoing audio signals, with selectable metering modes
23.ADAT Optical input/output, auto-sensing of incoming digital audio
24.Clock selectable between 44.1k and 48k sampling rates
25.MIDI in/out for program changes and sys-ex storage
26.+4 dBu/-10 dBV operating level switch on rear panel
For full operating specifications, see page 65.
4
How to Use This Manual
This manual is divided into the following sections describing the various functions of and applications for the DEQ830. While it's a good idea to read through the entire manual once carefully, those having general knowledge about audio equipment should use the table of contents to look up specific functions.
Chapter 1: Quick Start Guide. If you're already familiar with equalization, this will get you started using the DEQ830 right away. This section presents the essential elements of hooking up the unit and using it for the first time.
Chapter 2: Connections. This section gives detailed instructions for connecting the DEQ830 to a variety of typical audio systems.
Chapter 3: Basics of Equalization. This section describes what an equalizer does and explains the function of each of the controls.
Chapter 4: Applications. Skip to this section for tips on using the DEQ830 in a variety of settings. You’ll also find a blank chart representing the DEQ830’s 30 bands of EQ. You can make copies of this chart and use them to keep track of some of your
favorite settings.
Chapter 5: Troubleshooting. Near the end of the manual you will find troubleshooting tips and a complete list of the DEQ830’s specifications.
Helpful tips and advice are highlighted in a shaded box like this.
The names of specific buttons on the DEQ830 are printed in a bold font and bracketed: e.g., the [BYPASS] button.
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 DEQ830.
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6
Important Safety
Instructions
Important Safety Instructions (English)
Safety symbols used in this product
This symbol alerts the user that there are important operating and maintenance instructions in the literature accompanying this unit.
This symbol warns the user of uninsulated voltage within the unit that can cause dangerous electric shocks.
This symbol warns the user that output connectors contain voltages that can cause dangerous electrical shock.
Please follow these precautions when using this product:
1. Read these instructions.
2.Keep these instructions.
3.Heed all warnings.
4.Follow all instructions.
5.Do not use this apparatus near water.
6.Clean only with a damp cloth. Do not spray any liquid cleaner onto the faceplate, as this may damage the front panel controls or cause a dangerous condition.
7.Install in accordance with the manufacturer's instructions.
8.Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
9.Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. When the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10.Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
11.Use only attachments or accessories specified by the manufacturer.
Continued next page
7
12.Use only with a cart, stand, bracket, or table designed for use with professional audio or music equipment. In any installation, make sure that injury or damage will not result from cables pulling on the apparatus and its mounting. If a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
13.Unplug this apparatus during lightning storms or when unused for long periods of time.
14.Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as when the power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
15.This unit produces heat when operated normally. Operate in a well-ventilated area with at least six inches of clearance from peripheral equipment.
16.This product, in combination with an amplifier and headphones or speakers, may be capable of producing sound levels that could cause permanent hearing loss. Do not operate for a long period of time at a high volume level or at a level that is uncomfortable. If you experience any hearing loss or ringing in the ears, you should consult an audiologist.
17.Do not expose the apparatus to dripping or splashing. Do not place objects filled with liquids (flower vases, soft drink cans, coffee cups) on the apparatus.
18.WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
19.The unit is an audio device, whose power supply may be subject to surrounding electronic interference. Once installed, if you find that the unit is malfunctioning, the problem may be solved by resetting the unit, relocating the unit, or by installing a line-conditioner.
8
Instructions de Sécurité Importantes (French)
Symboles utilisés dans ce produit
Ce symbole alèrte l’utilisateur qu’il existe des instructions de fonctionnement et de maintenance dans la documentation jointe avec ce produit.
Ce symbole avertit l’utilisateur de la présence d’une tension non isolée à l’intérieur de l’appareil pouvant engendrer des chocs électriques.
Ce symbole prévient l'utilisateur de la présence de tensions sur les raccordements de sorties, représentant un risque d'électrocution.
Veuillez suivre ces précautions lors de l’utilisation de l’appareil:
1. Lisez ces instructions.
2.Gardez ces instructions.
3.Tenez compte de tous les avertissements.
4.Suivez toutes les instructions.
5.N’utilisez pas cet allareil à proximité de l’eau.
6.Ne nettoyez qu’avec un chiffon humide. Il est potentiellement dangereux d'utiliser des pulvérisateurs ou nettoyants liquides sur cet appareil.
7.Installez selon les recommandations du constructeur.
8.Ne pas installer à proximilé de sources de chaleur comme radiateurs, cuisinière ou autre appareils (don’t les amplificateurs) produisant de la chaleur.
9.Ne pas enlever la prise de terre du cordon secteur. Une prise murale avec terre deux broches et une troisièrme reliée à la terre. Cette dernière est présente pour votre sécurité. Si le cordon secteur ne rentre pas dans la prise de courant, demandez à un électricien qualifié de remplacer la prise.
10.Evitez de marcher sur le cordon secteur ou de le pincer, en particulier au niveau de la prise, et aux endroits où il sor de l’appareil.
11.N’utilisez que des accessoires spécifiés par le constructeur. Suite de la page suivante
9
12.N’utilisez qu’avec un stand, ou table conçus pour l’utilisation d’audio professionnel ou instruments de musique. Dans toute installation, veillez de ne rien endommager à cause de câbles qui tirent sur des appareils et leur support.
13.Débranchez l’appareil lors d’un orage ou lorsqu’il n’est pas utilisé pendant longtemps.
14.Faites réparer par un personnel qualifié. Une réparation est nécessaire lorsque l’appareil a été endommagé de quelque sorte que ce soit, par exemple losrque le cordon secteur ou la prise sont endommagés, si du liquide a coulé ou des objets se sont introduits dans l’appareil, si celui-ci a été exposé à la pluie ou à l’humidité, ne fonctionne pas normalement ou est tombé.
15.Puisque son fonctionement normale génère de la chaleur, placez cet appareil au moins 15cm. des équipments péripheriques et assurez que l’emplacement permet la circulation de l’air.
16.Ce produit, utilisé avec un amplificateur et un casque ou des enceintes, est capable de produite des niveaux sonores pouvant engendrer une perte permanente de l’ouïe. Ne l’utilisez pas pendant longtemps à un niveau sonore élevé ou à un niveau non confortable. Si vous remarquez une perte de l’ouïe ou un bourdonnement dans les oreilles, consultez un spécialiste.
17.N'exposez pas l'appareil à l'égoutture ou à l'éclaboussement. Ne placez pas les objets remplis de liquides (vases à fleur, boîtes de boisson non alcoolique, tasses de café) sur l'appareil.
18.AVERTISSEMENT: Pour réduire le risque du feu ou de décharge électrique, n'exposez pas cet appareil à la pluie ou à l'humidité.
19.Quand ce produit est en fonction, l'alimentation secteur peut provoquer des interférences sur la fonction surround. Une fois installé, si vous détectez que le produit ne fonctionne pas correctement, le problème peut être résolu en effectuant un reset de l'appareil ( débrancher l'alimentation et rebrancher la après quelques secondes ) ou insérez l'alimentation de l'appareil dans une prise secteur équipée d'une masse correcte.
10
Lesen Sie bitte die folgende Sicherheitshinweise (German)
Sicherheit Symbole verwendet in diesem
Produkt
Dieses Symbol alarmiert den Benutzer, daß es wichtige Funktionieren und Wartung Anweisungen in der Literatur gibt, die diese Maßeinheit begleitet.
Dieses Symbol warnt den Benutzer der nicht isolierten
Spannung innerhalb der Maßeinheit, die gefährliche elektrische
Schläge verursachen kann.
Dieses Symbol warnt den Benutzer, dem Ausgabestecker Spannungen enthalten, die gefährlichen elektrischen Schlag verursachen können.
Folgen Sie bitte diesen Vorkehrungen, wenn dieses Produkt verwendet wird:
1. Lesen Sie die Hinweise.
2.Halten Sie sich an die Anleitung.
3.Beachten Sie alle Warnungen.
4.Beachten Sie alle Hinweise.
5.Bringen Sie das Gerät nie mit Wasser in Berührung.
6.Verwenden Sie zur Reinigung nur ein weiches Tuch. Verwenden Sie keine flüssigen Reinigungsmittel. Dies kann gefährliche Folgen haben.
7.Halten Sie sich beim Aufbau des Gerätes an die Angaben des Herstellers.
8.Stellen Sie das Gerät nich in der Nähe von Heizkörpern, Heizungsklappen oder anderen Wärmequellen (einschließlich Verstärkern) auf.
9.Verfehlen Sie nicht den Zweck des grounging Terminals auf dem Netzstecker. Dieses Terminal wird für Ihre Sicherheit zur Verfügung gestellt.
10.Verlegen Sie das Netzkabel des Gerätes niemals so, daß man darüber stolpern kann oder daß es gequetscht wird.
11.Benutzen Sie nur das vom Hersteller empfohlene Zubehör. Fortsetzung auf nächster seite
11
12.Verwenden Sie ausschließlich Wagen, Ständer, oder Tische, die speziell für professionelle Audiound Musikinstrumente geeignet sind. Achten Sie immer darauf, daß die jeweiligen Geräte sicher installiert sind, um Schäden und Verletzungen zu vermeiden. Wenn Sie einen Rollwagen benutzen, achten Sie darauf, das dieser nicht umkippt, um Verletzungen auszuschließen.
13.Ziehen Sie während eines Gewitters oder wenn Sie das Gerät über einen längeren Zeitraum nicht benutzen den Netzstecher aus der Steckdose.
14.Die Wartung sollte nur durch qualifiziertes Fachpersonal erfolgen. Die Wartung wird notwendig, wenn das Gerät beschädigt wurde oder aber das Stromkabel oder der Stecker, Gegenstände oder Flüssigkeit in das Gerät gelangt sind, das Gerät dem Regen oder Feuchtigkeit ausgesetzt war und deshalb nicht mehr normal arbeitet oder heruntergefallen ist.
15.Dieses Gerät produziert auch im normalen Betrieb Wärme. Achten Sie deshalb auf ausreichende Lüftung mit mindestens 15 cm Abstand von anderen Geräten.
16.Dieses Produkt kann in Verbindung mit einem Verstärker und Kopfhörern oder Lautsprechern Lautstärkepegel erzeugen, die anhaltende Gehörschäden verursachen. Betreiben Sie es nicht über längere Zeit mit hoher Lautstärke oder einem Pegel, der Ihnen unangenehm is. Wenn Sie ein Nachlassen des Gehörs oder ein Klingeln in den Ohren feststellen, sollten Sie einen Ohrenarzt aufsuchen.
17.Setzen Sie den Apparat nicht Bratenfett oder dem Spritzen aus. Plazieren Sie die Nachrichten, die mit Flüssigkeiten (gefüllt werden Blumevases, Getränkdosen, Kaffeetassen) nicht auf den Apparat.
18.WARNING: um die Gefahr des Feuers oder des elektrischen Schlages zu verringern, setzen Sie diesen Apparat nicht Regen oder Feuchtigkeit aus.
19.Das Netzteil des Audiogerätes kann Interferenzstörungen der Umgebung ausgesetzt sein. Sollten nach erfolgter Installation Fehlfunktionen am Gerät auftreten, können diese durch ein Zurücksetzen des Gerätes (Reset), durch einen anderen Aufstellungsortes des Gerätes oder durch den Einsatz eines Spannungsstabilisators behoben werden.
12
CE Declaration of Conformity
See our Web site at:
http://www.alesis.com
FCC Compliance Statement
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference and (2) this device must accept any interference received, including interference that may cause undesired operation.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
--Reorient or relocate the receiving antenna.
--Increase the separation between the equipment and receiver.
--Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
--Consult the dealer or an experienced radio/TV technician for help.
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14
1 Quick Start Guide
If you can’t wait to get started…
The Alesis DEQ830 is a unique product, but its basic hookup and operation are similar to other equalizers in most respects. If you're experienced with signal processors, this chapter is a “shorthand” guide for those who want to start using the DEQ830 right away. If you have questions about any of the features, don’t worry – all the details will be covered in later chapters.
Step 1: Hook it up to a mixer
1.Plug the POWER jack on the back of the DEQ830 into a grounded AC power source with the supplied power cable.
2.Using high-quality cables, plug the left and right main outputs of a non-powered mixer into the Channel 1 and Channel 2 inputs on the back of the DEQ830. You may connect up to eight separate audio sources in the same manner.
3.Connect another pair of cables to the Channel 1 and Channel 2 outputs of the DEQ830 and plug them into your amplification system or a pair of powered monitors.
4.Press the [POWER] switch on the front of the DEQ830 to power up the unit.
5.You may want to link some of the channels together— Channels 1 and 2, for example. That way you’ll hear the changes you make with Channel 1 affect both channels of the stereo signal at once. To do so, select Channel 1 by pressing its [CHANNEL SELECT] button. Then hold down the [LINK] button and press Channel 2’s [CHANNEL SELECT] button at the same time. After this, any EQ changes you make to Channel 1 will be reflected in Channel 2. You may link up to eight channels together using this method.
If you're new to signal processing, start with the more detailed instructions for hookup and operation found in the next chapter.
The DEQ830’s power will turn on automatically once its AC cable is plugged in, so be sure to press the [POWER] switch to turn the unit off while you’re connecting it to your other equipment.
When connecting the DEQ830 to other equipment, make sure all gear has been turned off. Also, to protect your speakers, be certain your amplifier(s) are turned all the way down before turning your equipment back on.
15
1 Quick Start Guide
Step 2: Try some equalization
Play some signal into the unit
While learning the unit, you should play a CD or a multitrack source into the equalizer. Choose a song or musical passage with a fairly consistent level, so you can take your time experimenting with the different features.
1.Put the mixer’s main faders all the way down so you don’t distort the unit by sending it too much signal.
2.Select program 00 on the DEQ830. This will call up a program with all frequencies set to 0 dB, allowing you to hear the changes you make to the audio more easily.
3.Begin playing your source material. Bring the mixer’s main faders up gradually until the Channel Meters for Channels 1 and 2 begin to light up. Carefully increase the mixer’s output level until the meters’ green and yellow LEDs are lit most of the time. If the red CLIP LEDs at the top of the meters light up at all, back the mixer’s output level down until they stop lighting up. This is important, because these red LEDs indicate that the signal is clipping on that channel.
4.Press one of the [BAND SELECT] buttons to select a frequency. One of the LEDs above that button will begin to blink.
5.Use the [VALUE] encoder to decrease or increase the chosen frequency. If desired, select another frequency and repeat this process.
6.Press the [BYPASS] button to hear the signal without the equalization effect. Press it again to return to the EQ’d signal.
7.Repeat steps 3 – 6 for the other audio sources you have connected to the DEQ830.
Step 3: Store the Program
Once you have created an interesting program, you can save it to one of the 100 user program locations. Here’s how to do this:
1.Press the [STORE] button to enter Store mode.
2.Use the [VALUE] encoder to select the new location for the edited program. For your convenience, programs 25-99 have been left blank so you can store your editing experiments somewhere without fear of overwriting a program you might want to use later.
3.Press the [VALUE] encoder to store the program to the new location. This will preserve the EQ settings for all eight channels of audio.
For a detailed explanation of how to use this mode, see page 41.
16
At the factory, we set all of Program 00’s frequencies to 0 dB. It’s a good idea to leave Program 00 this way, but if you have already overwritten it with some of your own settings, you can just create your own program with “flat” settings for the purposes of this experiment.
Remember: if the red CLIP LED at the top of a Channel Meter lights up, that means the signal is clipping. To prevent this, reduce the level being sent to the proper channel.
Programs 25-99 have been left blank so you have somewhere to store your programs right away without overwriting the factory presets.
Quick Start Guide 1
Step 4: Save an EQ Curve
In addition to being able to save entire programs, you can also save the settings for an individual EQ curve. Here’s how to do this:
1.Select the curve you wish to save by pressing that channel’s
[CHANNEL SELECT] button.
2.Press the [SAVE CURVE] button to enter Save Curve mode.
3.Use the [VALUE] encoder to select the new location for the edited curve. For your convenience, curves 50-99 have been left blank so you can save your editing experiments somewhere without fear of overwriting a curve you might want to use later.
4.Press the [VALUE] encoder to save the curve to the new location. You can retrieve any one of the 100 curves for use in any of the DEQ830’s 100 programs.
For a detailed explanation on how to use this mode, see page 41.
17
1 Quick Start Guide
DEQ830 Diagram
18
2 Connections
Unpacking and Inspection
Your DEQ830 was packed carefully at the factory. The shipping carton was designed to protect the unit during transit. Please keep this carton in the highly unlikely event that you need to return the DEQ830 for servicing.
The shipping carton should contain the following items:
•DEQ830 with the same serial number as shown on the shipping carton
•AC power cable
•This instruction manual
Installing in a Rack
The DEQ830 may be simply set on a table, or installed in a standard 19" audio equipment rack.
Thermal Considerations in Rack
Mounting
The DEQ830 can be mounted in an equipment rack (occupying one rack space) or placed on a table or shelf. When you install it, keep in mind that heat is the greatest enemy of electronic equipment. Please observe the following:
•The DEQ830 is designed to perform properly over a range of ambient temperatures from 10° C to +40° C (50° F to 104° F), in up to 80% non-condensing humidity. These are not absolute limits, but Alesis cannot guarantee that the DEQ830 will meet its published specs or remain reliable if operated outside of these ranges.
•Always allow adequate ventilation behind the DEQ830. Do not seal any enclosure that holds this unit. It is not necessary to leave an empty rack space above or below the DEQ830. However, if your environment is unusually warm and not air conditioned, space between units will help the units run cooler.
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