Manuals / Parasound / Home Audio / Stereo Amplifier

Parasound A 51 manual 10MAINTAINING YOUR A, Main Power Fuse

Models: A 51

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10MAINTAINING YOUR A 51

Your Parasound A 51 power amplifier requires no periodic maintenance and has no user- serviceable parts inside. To avoid the risk of electric shock, do not remove its top cover. The amplifier’s exterior can easily be cleaned with a soft cloth pre-moistened only with a few drops of water or glass cleaner.

Main Power Fuse

If this fuse blows, please contact Parasound Technical Service for further advice.

Notes:

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Parasound A 51 manual 10MAINTAINING YOUR A, Main Power Fuse

Contents

A 51 Amplifier Owner’s GuideTHANK YOU The Parasound Staff Unpacking Your AKeeping Records for Future Reference YOU SHOULD KNOWTABLE OF CONTENTS PLACEMENT GUIDELINES FOR YOUR ACONNECTING A SURROUND CONTROLLER CONNECTING YOUR SPEAKERS TO THE A2PLACEMENT GUIDELINES FOR YOUR A Rack Mounting Your Parasound ATo attach the rack mount brackets Before Connecting Balanced XLR Jacks and Their Pin ConfigurationLeft and Right Balanced Input Jacks What You’ll NeedCh 1-5Unbalanced Inputs YOU SHOULD KNOW Write Down Your ConnectionsBefore Connecting What You’ll NeedCONNECTING YOUR SPEAKERS TO THE A Speaker Wire Length and Gauge thicknessSpeaker Terminals Correct Speaker Polarity is Important6MANUAL AND AUTOMATIC TURN ON-OFFOPTIONS Manual On-Offfrom the Front PanelYOU SHOULD KNOW Turn Off Delay in the Audio Mode Before ConnectingCONNECTING AN EXTERNAL DC SOURCE FOR AUTOMATIC TURN ON-OFFBefore Connecting What You’ll Need8UNDERSTANDING THE INDICATORS ON THE A bOn, Off and Fault/Protection Status Indicatorsc - g Channel Status Indicators c - g All Indicators IlluminatedCONNECTING THE A 51 AC POWER CORD AC Power Connections110 V - 120 V or 220 V - 240 V Operation Before ConnectingMain Power Fuse 10MAINTAINING YOUR ATROUBLESHOOTING GUIDE TROUBLEPROBABLE CAUSE REMEDY12SERVICING YOUR A If All Else Fails -CallUs for HelpImportant Notice - Shipping the A Audio Trigger Sensitivity Adjustment Bare Speaker Wire EndsSpeaker Wires - Banana Plugs Instead of Bare Ends Choosing Interconnect Cables and Speaker Wire14TECHNICALLY SPEAKING continued Ground Switch, set to up positionThe Power Supply Complementary ConfigurationPARASOUND A 51 DESIGN OVERVIEW Circuit Designed by John Curl16PARASOUND A 51 DESIGN OVERVIEW continued The Driver StageThe Output Stage Class A-A/BOperationPARASOUND A 51 SPECIFICATIONS Power Output - All Channels DrivenDimensions Power Requirement