Parasound A 51 manual Parasound a 51 Specifications

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PARASOUND A 51 SPECIFICATIONS

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Power Output - All Channels Driven

250 watts RMS x 5, continuous,

20 Hz - 20 kHz, 8

400 watts RMS x 5, continuous,

20 Hz - 20 kHz, 4

Current Capacity

60 amperes peak per channel

Slew Rate

> 130 volts per microsecond

Frequency Response

5 Hz - 100 kHz, +0/-3 dB at 1 watt

Total Harmonic Distortion

<0.2 % at full power

<0.03 % at typical listening levels

IM Distortion

< 0.04 %

TIM

Unmeasureable

Dynamic Headroom

> 1.5 dB

Interchannel Crosstalk

>78 dB at 1 kHz

>63 dB at 20 kHz

Input Impedance

Unbalanced: 47k

Balanced: 94k

Input Sensitivity for 28.28 V Output into 8

Unbalanced: 1 V

Balanced: 1 V per leg

S/N Ratio

>112 dB, input shorted, IHF A-weighted

>102 dB, input shorted, unweigh

Damping Factor

> 1100 at 20 Hz

DC Trigger Requirements

+9 Vdc to +12 Vdc, 2 mA

Audio Trigger Requirements

50 mV AC - 250 mV AC

Dimensions

Width: 1712" (445 mm)

Panel height: 7" (178 mm)

Height with feet: 758" (194 mm)

Depth: 20" (508 mm)

Power Requirement

Standby: 25 Watts

Full Power into 4: 3000 Watts

Net Weight

80 lb. (36.4 kg)

Shipping Weight

87 lb. (39.5 kg)

V 1.0 Features and specifications subject to change without notice.

© Parasound Products, Inc. 2002.

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Contents Amplifier Keeping Records for Future Reference Thank YOUCongratulations and Thank You for Choosing Parasound Parasound Staff Unpacking Your aTable of Contents Rack Mounting Your Parasound a Placement Guidelines for Your aTo attach the rack mount brackets To Connect Before Connecting What You’ll NeedBalanced XLR Jacks and Their Pin Configuration Left and Right Balanced Input JacksCh 1-5 Unbalanced Inputs Before ConnectingWrite Down Your Connections Correct Speaker Polarity is Important Connecting Your Speakers to the aSpeaker Wire Length and Gauge thickness Speaker TerminalsTurn Off Delay in the Audio Mode Connecting an Active Audio Source for Automatic On-OffManual and Automatic Turn ON-OFF Options Fuse Connecting AN External DC Source for Automatic Turn ON-OFFUnderstanding 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 Trouble Probable Cause Remedy Troubleshooting GuideImportant Notice Shipping the a Procedure for Returning Your a 51 to Parasound for ServiceServicing Your a If All Else Fails -Call Us for HelpTechnically Speaking Audio Trigger Sensitivity AdjustmentTechnically Speaking Circuit Designed by John Curl Parasound a 51 Design OverviewParasound a 51 Design Overview Parasound a 51 Specifications Parasound Products, Inc Battery Street, San Francisco, CA