Crown 2-650 User Manual

Professional Power AmplifierUser Manual

106.0 IndicatorsA. AC PresentThis light glows when AC power is applied to the amplifier, whether or not the amplifier is actuallyrunning. This light w

11Indicators...F. ClipThis light is in fact rather more sophisticated than a simple clip indicator; it actually measures distortion.This may occur eit

127.0 Typical applicationsa. Two channel (stereo) operationIn this example, each channel of the PULSE 2x650 is being used independently. For this appl

13Typical applications...c. Two amplifiers for stereo with a mono sub-bassHere Two amplifiers are used with an active crossover to provide a separate

148.0 GlossaryIn this section many of the terms used throughout this manual are explained in more detail.ActiveActive electronic circuits are those wh

15Glossary...dBu or dBvThe addition of a lower case ”u” or “v” after dB indicates an absolute scaling for the dB ratio. 0dBu (or 0dBv) = 778mV or 0.77

16Glossary...Removable terminal blockOne of the names given to a pluggable terminal block suitable for use with audio where connection topermanent wir

179.0 SpecificationsPower Ratings Pulse 2x650StereoMeasured per channel, both channels driven at 1kHz to no more than 0.1% THD+N8 ohms 400W rms4 ohms

1810.0 TroubleshootingChecklistProblem: No outputCheck: Are the AC Present and Operate lights on?Are the Fault & Temp lights off?Are the Signal li

19Troubleshooting...Status IndicationThere is a microprocessor inside each PULSE amplifier responsible for monitoring all critical systems. Thestatus

2ContentsSafety Information... 31.0 Introduction & Unpacking...

20Crown amplifiers are quality units that rarely requireservicing. Before returning your unit for servicing,please contact Crown Technical Support to

WORLDWIDE EXCEPT USA & CANADASUMMARY OF WARRANTYCrown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you,

22 A division of Harman International IndustriesVersion 2.0 CB 190901 ZM10092-01 Crown Part Number: 133784-1Crown is a registered trademark of Crown

3DO NOT REMOVE COVERS. NO USERSERVICEABLE PARTS INSIDE.REFER SERVICING TO QUALIFIED SERVICEPERSONNEL.THIS EQUIPMENT MUST BE GROUNDED. ITSHOULD NOT BE

41.0 Introduction & UnpackingFront panelRear panelIntroductionThe PULSE series of amplifiers are high performance professional power amplifiers ca

52.0 Mechanical InstallationA vertical rack space of 2U(88mm high) is required,with an in rack depth of18.1 inches (460mm).The amplifier protrudes1.6

63.0 AC Power ConnectionWARNING! THIS APPLIANCE MUST BE GROUNDED.The amplifier must always be connected to a 3-wire grounded AC outlet. The rack frame

74.0 Audio ConnectionsInputsFor each channel, there is a 1/4” phone jack socket, male & female XLR and pluggable removableterminal block connector

8OutputsBoth binding post and Speakon® connectors areprovided for each channel, these are internally wiredin parallel so either or both may be used. N

95.0 Control operationa. Power SwitchPressing this switch so that thewhite dot is closest to the frontpanel signals to themicroprocessor that the user