Table of Contents | Parasound A 31 specs

Table of Contents

Introduction	4
Placement and Ventilation Guidelines	5
AC Mains Voltage	5
Rack Mounting	6
Audio Input and Output Connections	7
Gain Control Settings	9
Turn On Options	10
Front Panel Operation	12
Technically Speaking	13
Design Overview	14
Problems and Remedies	17
If You Require Assistance or Warranty Repair	18
Specifications	19

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Parasound A 31 manual Table of Contents

Contents

OWNER’S Guide Important Safety Instructions Table of Contents Important Warranty information Thank You for Choosing ParasoundParasound Staff Keeping Records for Future Reference Unpacking Your a 31 & Placement Guidelines AC Mains VoltageUnpacking Your a Rack Mounting Your Parasound a Audio Input Connections Audio Connections Correct Speaker Polarity is Important Speaker Wire Length and Gauge thicknessSpeaker Connections Speaker Terminals When to Set the Gain Control Knobs Above or Below Normal Gain Control Settings 12V Position Automatic on/off Turn On OptionsManual Position Audio Position Automatic on/off 12V Loop Out Jack AC Power CordVolt Jacks 12V In Jack On-Off Button Front Panel Operation Technically Speaking Balanced and Unbalanced LinesGround Loops Eliminating Hum and Buzz Circuit Designed by John Curl Bare Speaker Wire EndsPower Supply Parasound a 31 Design Overview Input Stage Complementary ConfigurationRelay-Bypassed Soft Start Circuit Audio Circuit Path Topology Total Protection Relays Output StageClass A-A/B Operation Total Protection DC Servos Background Hum or Hiss Problems and RemediesUnit will not turn on No sound from speakers Are You Having Difficulty? Repair or Service Specifications Parasound Products, Inc McKinnon Ave, San Francisco, CA