Table of Contents
1. Introduction...........................................................................................1-1
1.1 About this manual...........................................................................................1-1
1.2 Operator Safety Summary..............................................................................1-2
1.2.1 Equipment Markings....................................................................................1-2
1.2.2. Terms .........................................................................................................1-2
1.3. Other Safety Information ...............................................................................1-3
2. Dynamics Processing Tutorial and Functional Basics .....................2-1
2.1 Dynamics Processing Basics..........................................................................2-1
2.1.1 Compressors and Limiters...........................................................................2-1
2.1.2 Expanders and Gates..................................................................................2-2
2.1.3 Ratio............................................................................................................2-2
2.1.4 Gain vs Output ............................................................................................2-2
2.1.5 Attack Time..................................................................................................2-2
2.1.6 Release Time ..............................................................................................2-3
2.1.7 Threshold Setting ........................................................................................2-3
2.1.8 Interpreting the Displays..............................................................................2-3
2.2 Using the Sidechain........................................................................................2-3
3. Technical Tutorial................................................................................3-1
3.1. Matching Levels vs Matching Impedances.....................................................3-1
3.2. Signal Levels..................................................................................................3-2
3.3. I/O Impedances..............................................................................................3-2
3.4. Polarity Convention ........................................................................................3-2
3.5. Input and Output Connections........................................................................3-3
4. Front Panel Overview..........................................................................4-1
5. Rear Panel Overview ...........................................................................5-1
6. Fast First Time Setup ...........................................................................6-1
6.1 Connections ...................................................................................................6-1
6.2 Settings ..........................................................................................................6-1
6.3 Initial Setup.....................................................................................................6-2
6.4 Refining Your Settings....................................................................................6-2
6.5 Stereo Coupling..............................................................................................6-2
7. Using the 425.........................................................................................7-1
7.1 Block Diagram ................................................................................................7-1
7.2 Installation ......................................................................................................7-1
7.3 The 425 as a Compressor..............................................................................7-1
7.4 The 425 as a Ducker......................................................................................7-2
7.5 The 425 as a Limiter.......................................................................................7-2
7.6 The 425 as an Expander................................................................................7-3
7.7 Using the Expander and Compressor Simultaneously ...................................7-3
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