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dbx 222 User Manual

dbx 222
20 pages
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dbr'Mod
et222
type
ll noise
reduction
system
for
tape
& disc
INSTRUCTION
MANUAL
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dbx 222 Specifications

General IconGeneral
Channels2
Noise ReductionUp to 20 dB
Power Supply100-240V AC, 50/60 Hz
Frequency Response20 Hz to 20 kHz
Signal-to-Noise Ratio> 90 dB
Input Impedance10 kΩ
Output Impedance600 Ω
Dimensions19" x 1.75" x 8"

Summary

Brief Operating Instructions

Rear Panel Overview

Details the rear panel connections, inputs, outputs, and level adjustment controls.

Front Panel Controls

Explains the function selector buttons (RECORD, BYPASS, PLAY, dbx DISC) and POWER button.

Function Select Button Guide

Provides a table explaining the functions obtained by pressing various button combinations.

Quick-Reference Guide to dbx 222 Operation

Making and Playing dbx Tapes

Instructions for recording dbx encoded tapes and playing them back.

Playing dbx Encoded Discs

Steps for playing dbx encoded discs through the Model 222.

Conventional Tape Operations and Disc Transfer

Guide for conventional tapes and copying dbx discs to non-encoded tape.

Introduction

Connections and Operation

Basic Signal Connections

Illustrates and explains the fundamental signal connections for the dbx Model 222.

Dubbing dbx Encoded Discs to Tape

Methods for transferring dbx encoded discs to tape, either encoded or non-encoded.

Using the 222 with Signal Processors

Guidance on integrating the dbx 222 with graphic equalizers and other processors.

Copying dbx Encoded Tapes

Procedure for making a dbx encoded copy from an existing dbx encoded tape.

Decoding dbx Discs for Non-Encoded Copies

Steps to decode a dbx master tape before making a non-encoded copy.

Tape Copying with Monitor Loops

Instructions for tape copying based on preamp monitor loop configurations.

Making a dbx-Encoded Copy from a Non-Encoded Tape

Two Tape Monitor Loops Setup

Procedure for making a dbx encoded copy using a preamp with two tape monitor loops.

One Tape Monitor Loop Setup

Method for making a dbx encoded copy with a preamp having one tape monitor loop.

Setting the Level Adjust Controls

Tape Record Level Adjustment

Guide for setting record levels to match tape recorder input and dbx processing.

Tape Play Level Adjustment

Procedure to match preamp volume for playing dbx encoded vs. conventional tapes.

Disc Play Level Adjustment

Steps to match preamp volume when playing dbx encoded discs versus conventional records.

Product Warranty and Factory Service

Specifications

Schematic

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