Reference Manual
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Table Of Contents
Chapter Four Applications
Welcome
Introduction
DEQ230D only
DEQ230 Key Features
13.BYPASS button
How to Use This Manual
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Safety symbols used in this product
Important Safety Instructions
Important Safety Instructions English
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
Symboles utilisés dans ce produit
Instructions de Sécurité Importantes French
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
Sicherheit Symbole verwendet in diesem Produkt
12.Verwenden Sie ausschließlich Wagen, Ständer, oder Tische, die speziell für professionelle Audio- und 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
FCC Compliance Statement
CE Declaration Of Conformity
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If you cant wait to get started
1Quick Start Guide
Step 1 Hook it up to a mixer
Step 2 Try some equalization
1 Quick Start Guide
Step 3 Store the Program
Play some signal into the unit
Quick Start Guide
1 Quick Start Guide
2Connections
Installing in a Rack
Unpacking and Inspection
Thermal Considerations in Rack Mounting
To use the DEQ230 in another country
AC Power Hookup
2 Connections
Unbalanced I/O
Connecting Inputs and Outputs
Connections
2 Connections
Stereo connections
Balanced I/O
Operating Levels
Connecting to the inserts on an instrument amplifier
Connections
Digital Signal In, Analog Signal Out
Analog Signal In, Digital Signal Out
Digital Signal In, Digital Signal Out
2 Connections
Connections
About Audio Cables
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2 Connections
3Basics of Equalization
What is equalization?
Description of the Controls
3 Basics of Equalization
BYPASS
STORE
Description of the Basic Modes
Basics of Equalization
Program mode
Edit mode
Bypass mode
3 Basics of Equalization
Audition mode
Channel Level mode
Basics of Equalization
Basic operation Program mode
3 Basics of Equalization
Basic operation Edit mode
Single Band Edit
Band Solo
Band Gain Cut/Boost Ranges
Basics of Equalization
Multiple Band Edit
3 Basics of Equalization
Selecting an Edit Group
The Relative Gain Display
upward until it reaches 24. This is because thats how far the band that was set to -12dB had to travel until it hit the ceiling, or + 12 dB see fig
Basics of Equalization
The Limits of Relative Gain
3 Basics of Equalization
The Release Edit Group function
Basics of Equalization
3 Basics of Equalization
Basic operation Store mode
Channel Copy
Basics of Equalization
3 Basics of Equalization
Basic operation Audition mode
Audition Automation
Basics of Equalization
Manual Audition
Audition Automation override
3 Basics of Equalization
Basic operation Channel Level mode
Basics of Equalization
The Hidden Modes
Demonstration mode
Real-timeAnalysis mode DEQ230D only
Default
Setup mode
3 Basics of Equalization
Item button
Button 2 Release Edit Group On/Off
Basics of Equalization
Button 1 Master Level +/- 6 dB
Button 3 Audition Automation On/Off
3 Basics of Equalization
Button 4 Edit Time Out On/Off
Button 5 Lock On/Off
Buttons 6-12DEQ230D only
Basics of Equalization
Button 6 MIDI Channel ALL
Button 7 MIDI Program Change On/Off
Button 9 System Exclusive Receive Waiting
3 Basics of Equalization
Button 10 MIDI Out/Thru Select Out/Thru
Button 11 Sample Rate Select 44.1/48
Hold
Basics of Equalization
Press
Result
3 Basics of Equalization
Equalization Artifacts
Distortion
Noise
What makes the DEQ230 unique?
Constant Q vs. Variable Q
Basics of Equalization
Constant Q
3 Basics of Equalization
Variable Q
Multi-bandapplication and results
Basics of Equalization
3 Basics of Equalization
To further illustrate the differences, here is a pair of examples in which three adjacent bands have settings of + 3 dB, -3dB, and + 3 dB, respectively
Rock Kick Drum
4Applications
Vocal Air
Tape Hiss Removal
Filtering effects
4 Applications
Eliminating Feedback
The answering machine
Comb filtering
Applications
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4 Applications
Note for all program charts
5Program Charts
Program Charts
Note for programs 16-20and
Program Charts
Narrow Boost 3 800Hz
Program Charts
Note for programs
Program Charts
from magnetic media
Program Charts
and hot treble, send it through this curve
Program Charts
artifacts of the sampling process
Program Charts
Note for programs
more the bass is emphasized
Program Charts
5 Program Charts
Program Charts
DEQ230 Settings Chart
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5 Program Charts
Care and Maintenance
6Troubleshooting
Line Conditioners and Protectors
Cleaning
Troubleshooting Index
6 Troubleshooting
Solution Test with a known good input
Cause
Obtaining Repair Service
Troubleshooting
Refer All Servicing to Alesis
Customers in the USA and Canada
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6 Troubleshooting
Analog I/O switchable
Specifications
DEQ230D
DEQ230
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Alesis Limited Warranty
Warranty / Contact
Alesis Contact Information