Dbx 128 owners manual

Page 1

INSTRUCTION MANUAL

THR? >HOI 0
MODEL

. ABOVE I28

DYNAMKIRANGEENHANCER
' NOISE REDUCTION

SYSTEM

- DYNAMIC RANGE __J
ENHANCER L NOISE REDUCTION

POWER LINEAR

. ABOVE
THRESHOLD .

Page 2

HOW TO USE THIS MANUAL J

To achieve maximum benefit from your 128, we
recommend that you read the entire dbx 128 Operator's
Manual and keep it handy for future reference. However, if
you are familiar with expansion and compression, and with
the use of dbx II tape noise reduction, the FUNCTIONAL
CALLOUTS and BRIEF OPERATING INSTRUCTIONS
should provide all the information you need to connect
and operate the 128. These sections also serve as quick
reference guides for occasional review.

The INTRODUCTION explains why and when to use
dbx II tape noise reduction, expansion, compression, peak
limiting and peak unlimiting. Combination applications are
also covered. The remainder of the 128 Operators Manual
is a detailed set of connection diagrams, operating
instructions and explanations of the 128's functions.

WARNING: TO PREVENT FIRE OR SHOCK
HAZARD, DO NOT EXPOSE THIS APPLIANCE
T0 RAIN 0R MOISTURE.

INbEX

FUNCTIONAL CALLOUTS 2
BRIEF OPERATING INSTRUCTIONS 4
INTRODUCTION TO THE dbx 128 6
WHEN TO USE COMBINATION APPLICATIONS 9
DETAILED OPERATING INSTRUCTIONS 10
CONNECTIONS 11
OPERATION 14
HINTS TO GET THE MOST OUT OF 20
dbx TAPE NOISE REDUCTION

USING THE DYNAMIC RANGE ENHANCER SYSTEM 21
HOW TO SET UP COMBINATION APPLICATIONS 24
SYSTEM PERFORMANCE 29
TECHNICAL DETAILS OF dbx PROCESSING 30
COMPRESSOR/LIMITER AND EXPANDER, 33
A SUMMARY

SIMPLE PRECAUTIONS WHEN USING ANY 35
PROGRAM EXPANDER

SPECIFICATIONS 36
SCHEMATIC 38
dbx PRODUCT WARRANTY 39
FACTORY SERVICE 39

dbx GLOSSARY