QSC Audio ISA 300T, ISA 500T, ISA 800T TABLE OF CONTENTS

INTRODUCTION:

ISA Series Overview .......................................................................................4

Front Panel Illustration .........................................................................................4

Rear Panel Illustrations ........................................................................................5

FEATURES & SETUP :

Power Switch ............................................................................................6

Cooling Air Inlet and Exhaust Vents ...............................................................6

LED Indicators ........................................................................................7

Gain Controls ........................................................................................8

Input Jacks ..........................................................................................8

DataPort V2 Connector ...................................................................................9

Daisy Chaining to Other Devices from the DataPort V2 ................................9

Stereo & Parallel Operating Modes ..................................................................10

DIP Switch Settings ...................................................................11

Bridge Mono Operating Mode .......................................................................12

DIP Switch Settings ................................................................12

Low Frequency Filter ..........................................................................13

DIP Switch Settings ..............................................................13

Frequency Response Curves ..................................................................14

Clip Limiter ........................................................................................15

DIP Switch Settings ...............................................................15

INSTALLATION:

Rack Mounting ....................................................................................16

Mounting Dimensions .........................................................................16

Cooling Requirements ........................................................................17

AC Mains (AC Power) ..............................................................................17

CONNECTIONS:

Inputs: XLR and Terminal Block Input Jacks ...............................................18

Inputs: DataPort V2 Connections and Notes ...........................................19

Outputs: Using the Screw Terminal Connections ............................................20

Outputs: Direct Low Impedance (2-16 ohm loads) ................................................21

Outputs: Distributed High Impedance (“T” models only) ..................................22

Power Sharing Between High and Low Impedance Outputs (“T” models only) .......24

Securing Output Wiring to the Chassis .................................................................25

OPERATION:

Gain Controls .........................................................................................................26

AC Power Switch .........................................................................................26

Front Panel LED Indicators ................................................................................26

Normal Operating Levels ......................................................................................26

APPLICATIONS:

General Notes, Distributed Line Principles .....................................................27

Low Frequency Filtering, Distributed Output Examples ........................................28

Multiple Low Impedance Loads in Series or Parallel Connections .........................30

DataPort V2 Application Information ...........................................................................32

TROUBLESHOOTING ........................................................................................................33

SPECIFICATIONS ......................................................................................................35

WARRANTY INFORMATION .............................................................................................39

HOW TO CONTACT QSC AUDIO PRODUCTS ............................................................................39

TABLE OF CONTENTS