Crown Pulse 4X300 Manuel d'utilisateur

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 actually running.This light w

11Indicators...E. SignalThis indicator lights when a signal exceeding approximately -26dBu is applied to a channel. In bridge modeonly the channel 1 a

127.0 Typical applicationsb. Two Channel (Stereo) OperationFor this application the PULSE 4x300 is used with channels 1+2 and 3+4 in bridge mode, achi

13Typical applications...c. Three channel operationThis configuration demonstrates the flexibility of the PULSE 4x300. Channels 1+2 are bridged and dr

14e. Calculating ImpedanceMeasured in ohms, impedance is a measure of AC resistance. Loudspeakers generally come in 16, 8 or 4ohm varieties. Amplifier

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

16Glossary...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

17Glossary...TransientA sudden burst of energy in an audio signal which only lasts for a small period of time relative to the restof the signal. The l

189.0 SpecificationsPower Ratings Pulse 4x300StereoMeasured per channel, both channels driven at 1kHz to no more than 0.1% THD+N8 ohms 170W rms4 ohms

1910.0 TroubleshootingChecklistProblem: No outputCheck: Are the AC Present and Operate lights on?Are the Fault & Temp lights off?Are the Signal li

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

20Troubleshooting...Status IndicationThere is a microprocessor inside each PULSE amplifier responsible for monitoring all critical systems. Thestatus

21Crown amplifiers are quality units that rarely requireservicing. Before returning your unit for servicing,please contact Crown Technical Support to

22WORLDWIDE EXCEPT USA & CANADASUMMARY OF WARRANTYCrown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to yo

23 A division of Harman International IndustriesVersion 2.0 CB 190901 ZM10091-01 Crown part number 133783-1Crown 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

7InputsFor each channel, there is a 1/4” phone jack socket and female XLR socket provided for signal input on therear panel of the amplifier. Each is

8OutputsYour Pulse 4x300 amplifier can be fitted with eitherbinding post or Speakon® connectors for each channel.Note that it is possible to lever the

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