Hafler P7000 User Manual

®PROFESSIONAL POWER AMPLIFIERP7000Installation & OperationPROFESSIONAL POWER AMPLnovatransDESIGNED ANDASSEMBLED IN THEUSA®

T ECHNICAL REFERENCE– 6 –FIELD SERVICE CONSIDERATIONSA primary focus during the design and development of the P7000 was to ensure the dependability of

– 7 –PC BOARD LAYOUT

– 10 –P ARTS LISTDESIGNATOR VALUE PART #R70 100, 1/4W, 5% RM/4-101CR71 100, 1/4W, 5% RM/4-101CR72 100, 1/4W, 5% RM/4-101CR73 68, 1/4W RM/4-680CR74 51,

– 11 –DESIGNATOR VALUE PART #C21 10µF, 16V, Electrolytic CER-106SMC22 10µF, 16V, Electrolytic CER-106SMC23 0.47µF, 50V CYV-474-024C24 0.47µF, 50V CYV-

P7000 FUNCTIONAL BLOCK DIAGRAMXCardCrossover U7BNegative InputBufferU1BBalancedSignalSoft StartSwitch DelayQ1, C29, R13CurrentSourceQ103DC OffsetInteg

CIRCUIT OPERATIONtrans•nova ImplementationThe transistor Q1 is configured to operate as a switch which controls the current source, Q103, of the input

Fan Speed RegulationDriverU9ATrip SwitchU9BFan Drive AmpQ20, Q19TempTS1, R25Cooling air for each channel is provided by a DC fan. The fan is configur

Thermal ProtectionTempTS1, R25ComparatorU5BSoft Start SwitchQ1THERMAL IndicatorCR2The Thermal protection is activated, and shuts down audio operation,

– 16 –AMPLIFIER MODULE REPLACEMENTThe amplifier modules have been designed to eliminate the need for a special workplace if a field exchange becomesne

NOTICE - IMPORTANT SAFETY INFORMATIONCAUTIONRISK OF ELECTRIC SHOCKDO NOT OPEN!!WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS EQUIPMENT

– 17 –BUILDING CUSTOM XCARDSThe XCard crossover control modules used in the P7000 are a versatile and inexpensive method for configuring theamplifier

To calculate the resistor value for a frequency not on the chart use the following:3386fo= R (in kΩ) for .047µf cap= R (in kΩ) for .022µf cap7234foWhe

SERVICE POLICY AND LIMITED WARRANTYIf you encounter any difficulty or have any question concerning your P7000 Amplifier, please call our Technical Sup

MAN-0963-B9/95HAFLER PROFESSIONALA DIVISION OFROCKFORD CORPORATION546 SOUTH ROCKFORD DRIVETEMPE, ARIZONA 85281 U.S.A.IN U.S.A. (602) 967-3565IN CANAD

P ERFORMANCE SPECIFICATIONSP7000Power Rating: FTC (20Hz-20kHz, <0.1% THD) EIA (1kHz, 0.1% THD)350 wpc into 8Ω 375 wpc into 8Ω500 wpc into 4Ω* 5

T ABLE OF CONTENTSSAFETY PRECAUTIONS ...

I NTRODUCTION– 1 –The Hafler P7000 is a two channel professional power amplifier suitable for use in any sound reinforcementsituation where faithful,

I NSTALLATIONLOCATIONThe P7000 uses forced-air fan cooling to remove the heat produced in normal operation. Although this makesthe amplifier less sens

– 3 –INPUT CROSSOVERThe XCard crossover modules are plug-in cards located inside the amplifier. The P7000 is shipped with 100HzXCards in each channel.

– 4 –O PERATIONPOWER SWITCHThe POWER switch is located on the front panel of the amplifier. An internal lamp indicates when it is turnedon. Standard p

GROUND SWITCHGround loops are characterized by a hum or buzz through the speakers and are caused by a voltage potentialdifference between two points i