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Stereo Amplifier
Parasound
A 52 manual
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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