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dbx 118 User Manual

dbx 118
35 pages
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Table of Contents

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dbx 118 Specifications

General IconGeneral
Maximum Input Level+24dBu
Maximum Output Level+24dBu
Channels1
Frequency Response20 Hz to 20 kHz
FunctionsCompression, Limiting
InputsXLR
OutputsXLR
THD0.1%
Signal to Noise RatioGreater than 90 dB
Power Supply100-240VAC, 50/60Hz
Dimensions1.75" H x 19" W x 7.5" D

Summary

Brief Operating Instructions

Front Panel Controls Overview

Description of the dbx Model 118 front panel controls including LEDs, switches, and rotary knobs for basic operation.

Connections and System Integration

Rear Panel Layout

Diagram and description of the dbx Model 118 rear panel connectors, input/output jacks, and power connection.

Input and Output Wiring

Details on connecting the dbx 118 to preamplifiers, tape recorders, and other audio equipment for signal flow.

Critical Connection Warning

Warning regarding potential oscillation and damage when connecting tape inputs and outputs to audio systems.

Understanding Operational Modes

Linear Mode Operation

Graphs illustrating the effects of linear expansion and compression on audio signal dynamics.

Above Threshold Mode Operation

Graphs showing how the Above Threshold modes affect signal dynamics, acting only above a set level.

Introduction to Dynamic Range and dbx

General Setup and Notes

Installation Examples

Basic System Connection

Step-by-step instructions for connecting the unit to audio systems and advice on optimal cable lengths.

Advanced System Configurations

Operation with Tape Noise Reduction

Noise Reduction Plus Expansion

Setup for expanding dynamics and reducing noise with a dbx tape noise reduction unit for superior recordings.

Operation: Expansion and Compression

Linear Expansion Setup

Step-by-step guide for setting up the 118 for linear expansion, adjusting controls for desired effect.

Linear Compression Setup

Step-by-step guide for setting up the 118 for linear compression, adjusting controls for desired sound.

Advanced Operation and Features

Peak Unlimiting and Limiting

How to use the 118 to counteract peak limiting or act as a peak limiter.

Functional Summaries

Technical Operation Graphs

Circuitry and Precautions

Expander Usage Precautions

Essential precautions for using expanders, focusing on amplifier and speaker demands.

Technical Specifications

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