Parasound A 52 manual

A 52 Amplifier

Owner’s Guide

Contents

Main THANK YOU! Congratulations and Thank You for Choosing Parasound The Parasound Staff Unpacking Your A 52 Keeping Records for Future Reference TABLE OF CONTENTS A 52 Amplifier PLACEMENT GUIDELINES FOR YOUR A 52 Rack Mounting Your Parasound A 52 To attach the rack mount brackets: CONNECTING A SURROUND CONTROLLER TO THE BALANCED INPUTS ON YOUR A 52 Left and Right Balanced Input Jacks Balanced XLR Jacks and Their Pin Configuration CONNECTING A SURROUND CONTROLLER TO THE UNBALANCED INPUTS ON YOUR A 52 Ch 1-5 Unbalanced Inputs Write Down Your Connections CONNECTING YOUR SPEAKERS TO THE A 52 Speaker Terminals Correct Speaker Polarity is Important Speaker Wire Length and Gauge (thickness) MANUAL AND AUTOMATIC TURN ON-OFF OPTIONS Auto Turn On Switch, set to middle position Auto Turn On Switch, set to up position Connecting an Active Audio Source for Automatic On-Off An audio source thats playing CONNECTING AN EXTERNAL DC SOURCE FOR AUTOMATIC TURN ON-OFF 2.5 mm sub-mini plug Output CONTROL COMPONENT Audio Turn On Switch, set to down position CONNECTING THE A 52 TO TRIGGER ANOTHER COMPONENT 2.5 mm sub-mini plug Input A wire with a 2.5 mm sub-mini plug on each end (in addition to the wire provided with the A 52) UNDERST ANDING THE INDICA TORS ON THE A 52 CONNECTING THE A 52 AC POWER CORD AC Power Connections 110 V - 120 V or 220 V - 240 V Operation Page TROUBLESHOOTING GUIDE 12 TROUBLE PROBABLE CAUSE REMEDY SERVICING YOUR A 52 If All Else Fails Call Us for Help Procedure for Returning Your A 52 to Parasound for Service Important Notice - Shipping the A 52 TECHNICALLY SPEAKING Audio Trigger Sensitivity Adjustment Balanced and Unbalanced Lines Bare Speaker Wire Ends Choosing Interconnect Cables and Speaker Wires TECHNICALL Y SPEAKING continued Ground Switch, set to up position PARASOUND A 52 DESIGN OVERVIEW Circuit Designed by John Curl Parts Selection The Power Supply Relay-Bypassed Soft Start Circuit P ARASOUND A 52 DESIGN OVERVIEW continued The Driver Stage The Output Stage Class A-A/B Operation Total Protection - DC Servos PARASOUND A 52 SPECIFICATIONS