Reference Manual
This page intentionally left blank
100%
Table Of Contents
Troubleshooting Index
Alesis Limited Warranty
Receiving System Exclusive bulk dumps
Demonstration mode
Introduction
Welcome
DEQ830 Key Features
How to Use This Manual
This page intentionally left blank
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
Instructions de Sécurité Importantes French
Symboles utilisés dans ce produit
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
CE Declaration of Conformity
FCC Compliance Statement
This page intentionally left blank
If you can’t wait to get started…
1Quick Start Guide
Step 1 Hook it up to a mixer
1 Quick Start Guide
Step 2 Try some equalization
Step 3 Store the Program
Play some signal into the unit
Quick Start Guide
Step 4 Save an EQ Curve
DEQ830 Diagram
1 Quick Start Guide
Installing in a Rack
2Connections
Unpacking and Inspection
Thermal Considerations in Rack Mounting
Using the DEQ830 in another country
AC Power Hookup
2 Connections
Unbalanced I/O
Connections
Connecting Inputs and Outputs
2 Connections
Balanced I/O
Operating Levels
Mono connections
Connecting to the inserts on an instrument amplifier
Connections
Analog Signal In, Digital Signal Out
Digital Signal In, Analog Signal Out
Digital Signal In, Digital Signal Out
2 Connections
About Audio Cables
Connections
2 Connections
This page intentionally left blank
What is equalization?
3Basics of Equalization
3 Basics of Equalization
Description of the Front Panel
Band Select
Channel Level
Basics of Equalization
Bypass All ALL
Link PUSH TO LINK
Store
3 Basics of Equalization
Program
Value Encoder VALUE
Numerical LED Display
Description of the Basic Modes
Basics of Equalization
Program mode
Edit mode
3 Basics of Equalization
Retrieve Curve mode
Bypass mode
Channel Level mode
Basics of Equalization
Link mode
Utility mode
Real Time Analyzer mode
Basic operation Program mode
Basic operation Edit mode
3 Basics of Equalization
Single Band Edit
Band Gain Cut/Boost Ranges
Basics of Equalization
Band Solo
3 Basics of Equalization
Gain Change
Basics of Equalization
Multiple Band Edit
Selecting an Edit Group
The Relative Gain display
3 Basics of Equalization
see fig. 1 on page 38. But it wont stop at 12 it will keep racing upward until it reaches 24. This is because that’s 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
Basic operation Store mode
Basic operation Save Curve mode
Basics of Equalization
Basic operation Retrieve Curve mode
Basic operation Channel Level mode
Basic operation Link mode
Copying settings between channels
3 Basics of Equalization
Basic operation Real Time Analyzer mode
Using the VALUE encoder in RTA mode
Basics of Equalization
Setting
3 Basics of Equalization
Displayed
Name
Master Level +/- 6 dB
Basic operation Utility mode
Basics of Equalization
3 Basics of Equalization
Release Edit Group On/Off
Basics of Equalization
Edit Time Out On/Off
MIDI Channel ALL
MIDI Program Change On/Off
3 Basics of Equalization
Internal Clock Sample Rate Select 44.1/48
Force Analog Input Auto/Analog
Fast Program Select On/Off
Basics of Equalization
Receiving System Exclusive bulk dumps
The Hidden Modes
3 Basics of Equalization
Demonstration mode
Lock mode
Equalization Artifacts
Basics of Equalization
Distortion
Noise
What makes the DEQ830 unique?
Constant Q vs. Variable Q
3 Basics of Equalization
Constant Q
Basics of Equalization
Variable Q
3 Basics of Equalization
Multi-bandapplication and results
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
Basics of Equalization
3 Basics of Equalization
This page intentionally left blank
4Applications
General EQ tips
Rock Kick Drum
Vocal Air
4 Applications
Filtering effects
Eliminating Feedback
The answering machine
Comb filtering
Settings chart
Applications
Applications
5Troubleshooting
Care and Maintenance
Line Conditioners and Protectors
Cleaning
5 Troubleshooting
Troubleshooting Index
Solution Test with a known good input
Cause
Refer All Servicing to Alesis
Troubleshooting
Obtaining Repair Service
5 Troubleshooting
This page intentionally left blank
Specifications
Rear Panel I/O switchable
Audio Performance
Mechanical
This page intentionally left blank
Warranty / Contact
Alesis Limited Warranty
Alesis Contact Information