Alesis DEQ230D User Manual

Reference Manual

Important Safety Instructions 8 12. Use only with a cart, stand, bracket, or table designed for use with professional audio or music equipment. I

Important Safety Instructions 9 Instructions de Sécurité Importantes (French) Symboles utilisés dans ce produit Ce symbole alèrte l’utilisate

Important Safety Instructions 10 12. N’utilisez qu’avec un stand, ou table conçus pour l’utilisation d’audio professionnel ou instruments de mus

Important Safety Instructions 11 Lesen Sie bitte die folgende Sicherheitshinweise (German) Sicherheit Symbole verwendet in diesem Produkt Di

Important Safety Instructions 12 12. Verwenden Sie ausschließlich Wagen, Ständer, oder Tische, die speziell für professionelle Audio- und Musikin

Important Safety Instructions 13 CE Declaration Of Conformity See our website at: http://www.alesis.com FCC Compliance Statement This devic

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1 Quick Start Guide 15 If you can't wait to get started The Alesis DEQ230 is a unique product, but its basic hookup and operation are simi

1 Quick Start Guide 16 Step 2: Try some equalization Play some signal into the unit While learning the unit, you should play a CD or a multitrack

Quick Start Guide 1 17

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1 Quick Start Guide 18

2 Connections 19 Unpacking and Inspection Your DEQ230 was packed carefully at the factory. The shipping carton was designed to protect the u

2 Connections 20 AC Power Hookup The DEQ230D has what’s known as a “switching power supply.” This means it will detect any standard line voltage f

Connections 2 21 Connecting Inputs and Outputs Connecting to the Channel or Main Inserts of a mixing console Unbalanced I/O Most mixing consol

2 Connections 22 Mono connections This example shows how to connect the DEQ230 to one mono source. You can use this method to connect two

Connections 2 23 Connecting to the inserts on an instrument amplifier Unbalanced I/O The insert sends on a guitar or bass amp are usually labele

2 Connections 24 There are three ways to connect the DEQ230D with another digital audio device: Analog Signal In, Digital Signal Out A potential

Connections 2 25 About Audio Cables The connections between the DEQ230 and your studio are your music’s lifeline, so use only high quality cables

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3 Basics of Equalization 27 This section will explain how equalization works, and explain the functions of the DEQ230’s controls. What is equ

Table Of Contents 1 Introduction ...3 Welcome!...

3 Basics of Equalization 28 Description of the Controls There are thirty buttons side-by-side on each channel of the DEQ230. These are the [BAND

Basics of Equalization 3 29 Description of the Basic Modes Program mode When this manual refers to Program mode, we mean the very top level of f

3 Basics of Equalization 30 Bypass mode This mode is nearly as simple as it sounds: push the [BYPASS] button and the DEQ230 will let you hear the

Basics of Equalization 3 31 Basic operation: Program mode Program mode is where to be if you want to call up another program, or if you just wa

3 Basics of Equalization 32 Basic operation: Edit mode If you're not already there, exit to Program mode by using the [LINK/EXIT] button. T

Basics of Equalization 3 33 Band Gain Cut/Boost Ranges Whether you are cutting or boosting a band, the first 10 dB of change happens in 0.5 dB in

3 Basics of Equalization 34 Multiple Band Edit Selecting an Edit Group Pressing a [BAND SELECT] button puts the DEQ230 into Edit mode. And until

Basics of Equalization 3 35 upward until it reaches 24. This is because that's how far the band that was set to -12 dB had to travel until it

3 Basics of Equalization 36 One important note, though; Proportional Gain Memory is only temporary. If you have run one or more bands "past&q

Basics of Equalization 3 37 Likewise, if the lowest gain setting of any band in this same Edit Group is -4 dB, then the largest number you will

Table Of Contents 2 Basic operation: Store mode... 38 Channel Copy...

3 Basics of Equalization 38 Basic operation: Store mode Once you have created a program you would like to save, press the [STORE] button to enter

Basics of Equalization 3 39 Channel Copy You can use the Link function while editing to help set up identical curves on both channels. But at som

3 Basics of Equalization 40 Basic operation: Audition mode No doubt there will be times when you want to switch back and forth between different

Basics of Equalization 3 41 Audition Automation There are two ways to toggle between the programs in the Audition List: manually and automatical

3 Basics of Equalization 42 Basic operation: Channel Level mode Channel Level mode allows you to adjust the output level of channels A and B indep

Basics of Equalization 3 43 The "Hidden" Modes There are several sub-levels of operation that can be accessed from Program mode by pre

3 Basics of Equalization 44 Setup mode This is where you will find some of the features that govern the way the DEQ230 operates in the other mod

Basics of Equalization 3 45 Here's a description of what each function does. Button 1: Master Level (+/- 6 dB) The Master Level function

3 Basics of Equalization 46 If the Release Edit Group feature is off, the next [BAND SELECT] button you press after you have changed the level of

Basics of Equalization 3 47 current program, and/or storing a different program on top of the one you have created for a particular application.

Introduction 3 Welcome! Thank you for purchasing the Alesis DEQ230. It is a versatile product, and whether it becomes a part of your studi

3 Basics of Equalization 48 Button 9: System Exclusive Receive (Waiting) As long as this page is active, the DEQ230D will allow an external device

Basics of Equalization 3 49 “Auto” is the default value. To force the DEQ230D to listen only to the balanced inputs, switch this setting from Auto

3 Basics of Equalization 50 Equalization Artifacts When you apply a lot of EQ (6dB or more), you may hear some consequences on the output. Here a

Basics of Equalization 3 51 Constant Q vs. Variable Q What makes the DEQ230 unique? At their inception, graphic equalizers relied solely on a fo

3 Basics of Equalization 52 In the next illustration, the difference between a narrow Q and a wide Q is seen: Variable Q Now we&apos

Basics of Equalization 3 53 Multi-band application and results So far we have only dealt with cutting or boosting single frequency bands. The dif

3 Basics of Equalization 54 To further illustrate the differences, here is a pair of examples in which three adjacent bands have settings of + 3

4 Applications 55 This section is designed to get you started with the DEQ230 by giving some sample settings. These are merely suggested setti

4 Applications 56 Eliminating Feedback During a live performance, you may experience feedback if a microphone is placed too close to a monitor. H

Applications 4 57 Comb filtering You'll understand how this effect process got its name once you see the way it looks when recreated on the

Introduction 4 DEQ230 Key Features 1. Offers the best of digital technology and analog-style control: a graphic display with instant editing o

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5 Program Charts 59 Note for all program charts An "L" in the middle of the picture of the front panel indicates that a program’s LI

5 Program Charts 60 6 Loudness Plus This curve approximates what happens when you press the “Boost” button on some consumer-level stereo equipmen

Program Charts 5 61 12 Cross-Over Split a full-range mono signal into both channels; send the output of Channel A to an amplifier feeding the w

5 Program Charts 62 18 Narrow Boost 3 (800Hz) See note for programs 16-20 and 22-26 19 Narrow Boost 4 (2.5kHz) See note for programs 16-20 a

Program Charts 5 63 25 Narrow Cut 4 (2.5kHz) See note for programs 16-20 and 22-26 26 Narrow Cut 5 (8kHz) See note for programs 16-20 and 2

5 Program Charts 64 31 Tape Hiss Reduction This is a way to deal with noisy source material that originates from magnetic media. 32 Mini TV

Program Charts 5 65 38 Electric Guitar Bandlimit Very often a really hot guitar track has to find a place in a crowded mix. This is one place to

5 Program Charts 66 45 11kHz Sample Rate If you want to digitize your signal at a very low sample rate like 11kHz for effect, bandlimiting it to

Program Charts 5 67 51 Proximity Effect This curve is meant to mimic the physics phenomenon that the closer your ear (or a microphone) gets to a

Introduction 5 How to Use This Manual This manual is divided into the following sections describing the various functions of and applications

5 Program Charts 68 57 Blank Store one of your programs here. 58 Blank Store one of your programs here. 59 Blank Store one of your progr

Program Charts 5 69 DEQ230 Settings Chart

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6 Troubleshooting 71 Restoring the Factory Programs & Defaults There is a power-up button combination that will restore the DEQ230's

6 Troubleshooting 72 Troubleshooting Index Symptoms Cause Solution No audio at outputs. No input audio. Test with a known good input.

Troubleshooting 6 73 Refer All Servicing to Alesis We believe that the DEQ230 is one of the best signal processors that can be made using curre

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Specifications 75 DEQ230D Analog I/O (switchable) Input connectors: 2 balanced 1/4” TRS jacks Output Connectors: 2 balanced 1/4” TRS jacks

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Warranty / Contact 77 Alesis Limited Warranty ALESIS CORPORATION ("ALESIS") warrants this product to be free of defects in materi

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Warranty/Contact 78 Alesis Contact Information Alesis Distribution, LLC Los Angeles, CA USA E-mail: [email protected] Website: http://www

Important Safety Instructions 7 Important Safety Instructions (English) Safety symbols used in this product This symbol alerts the user t