Parasound A 51 manual Placement Guidelines for Your a, Rack Mounting Your Parasound a

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2PLACEMENT GUIDELINES FOR YOUR A 51

Power amplifiers are usually heavier and generate more heat than other components. To avoid damage to the A 51 or other equipment and to reduce risk of fire, you must follow these guidelines:

•A cable with a 2.5 mm sub-mini plug on each end (provided).

•Place the A 51 on a separate shelf that will adequately support its weight.

•Keep it away from heat sources such as air ducts or radiators.

•Avoid placing it on carpeting or another material that might obstruct airflow into the openings in the chassis bottom.

•Leave at least 3" of space around both sides and 6" of space above the top. The bottom clear- ance can be a little less.

•Do not block the front of the A 51 behind closed cabinet doors during use.

•Do not stack the A 51 with other components inside a cabinet unless you use a fan to circulate and exhaust the warm air that builds up between them.

Rack Mounting Your Parasound A 51

To mount the A 51 into a 19" wide equipment rack, you must first attach its rack mount brackets (provided). With its four feet removed, the A 51 chassis and front panel height occupies four rack spaces (7" or 176 mm). When mounting equipment below the A 51, you will also need to allow about 1⁄8" below the unit for the bottom chassis screws. A single standard rack space allows 13⁄4" vertical height in a 19" wide equipment rack. This measurement standard was devel- oped by the EIA (Electronic Industries Association) so manufacturers of electronic components and equipment racks could build products in standardized heights that would fit in a uniform space. Please call your Parasound dealer or Parasound Technical Services if you need additional advice about rack mounting the A 51.

To attach the rack mount brackets:

•Remove the three screws from each side of the A 51. These are arranged vertically, behind its front panel and in front of its first heatsink fin.

•Line up the three holes on each bracket with the three holes on the A 51 and reinsert the screws.

•Make sure the screws are tight because they will support the entire weight of the A 51 in the equipment rack.

Amplifier

On-Off

Rack Bracket

A 51

HiTemp

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Contents Amplifier Thank YOU Congratulations and Thank You for Choosing ParasoundParasound Staff Unpacking Your a Keeping Records for Future ReferenceTable of Contents Rack Mounting Your Parasound a Placement Guidelines for Your aTo attach the rack mount brackets Before Connecting What You’ll Need Balanced XLR Jacks and Their Pin ConfigurationLeft and Right Balanced Input Jacks To ConnectCh 1-5 Unbalanced Inputs Before ConnectingWrite Down Your Connections Connecting Your Speakers to the a Speaker Wire Length and Gauge thicknessSpeaker Terminals Correct Speaker Polarity is ImportantTurn Off Delay in the Audio Mode Connecting an Active Audio Source for Automatic On-OffManual and Automatic Turn ON-OFF Options Connecting AN External DC Source for Automatic Turn ON-OFF FuseUnderstanding the Indicators on the a AC Power Connections Connecting the a 51 AC Power Cord120 V or 220 V 240 V Operation Maintaining Your a Troubleshooting Guide Trouble Probable Cause RemedyProcedure for Returning Your a 51 to Parasound for Service Servicing Your aIf All Else Fails -Call Us for Help Important Notice Shipping the aAudio Trigger Sensitivity Adjustment Technically SpeakingTechnically Speaking Parasound a 51 Design Overview Circuit Designed by John CurlParasound a 51 Design Overview Parasound a 51 Specifications Parasound Products, Inc Battery Street, San Francisco, CA
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