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Models:

Power Base -1, 2 & 3

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POWER

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POWER

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POWER

© 1996 by Crown International, Inc., P.O. Box 1000, Elkhart, Indiana
46515-1000 U.S.A. Telephone: 219-294-8000. Power-Tech amplifiers
are produced by the Professional Audio Division of Crown
International, Inc. Trademark Notice: 

Power Base-3

 is a trademark

and 

Power Base-1

®

, Power Base-2

®

, Crown,

®

 

IOC

®

 and 

ODEP

®

 are

registered trademarks of Crown International, Inc. Other trademarks
are the property of their respective owners.

®

E106377

Applies only to 120 VAC,

North American PB-1,

PB-2 and PB-3 units.

101229-1

12/96

Applies only to 120 VAC,

North American PB-1

and PB-2 units.

®

LL 32521C

Содержание POWER BASE 1

Страница 1: ...l Audio Division of Crown International Inc Trademark Notice Power Base 3 is a trademark and Power Base 1 Power Base 2 Crown IOC and ODEP are registered trademarks of Crown International Inc Other tra...

Страница 2: ...46517 4095 U S A warrants to you the ORIGINAL PURCHASERandANYSUBSEQUENTOWNERofeachNEWCrownproduct foraperiodofthree 3 yearsfromthedateofpurchasebytheoriginalpurchaser the warrantyperiod thatthenewCrow...

Страница 3: ...this manual does not include all of the details of design production or variations of the equipment Nor does it cover every possible situation which may arise during installation operation or mainte...

Страница 4: ...ons 11 3 2 Power Indicator 11 3 3 Protection Systems 11 3 3 1 ODEP 11 3 3 2 Ultrasonic and RF Protection 11 3 3 3 Drive Protection 11 3 3 4 Transformer Thermal Protection 12 3 3 5 Fuses and Circuit Br...

Страница 5: ...Wiring 9 2 4Input Sensitivity Switch 10 2 5Loudspeaker Fuse Nomograph 10 3 1Back Panel Level Controls 12 4 1Power Base 1 Minimum Power Matrix 15 4 2Power Base 2 Minimum Power Matrix 16 4 3Power Base...

Страница 6: ...Power Base Series Power Amplifiers Page 6...

Страница 7: ...ER IS NECESSARY FOR EFFICIENT COOLING OF THE AMPLIFIER REMOVE ONLY TO ACCESS GAIN SWITCH REG U S PAT OFF 4 330 809 4 611 180 CAUTION TURN OFF AMPLIFIER BEFORE CHANGING THIS SWITCH STEREO BRIDGE MONO P...

Страница 8: ...ON TURN OFF AMPLIFIER BEFORE CHANGING THIS SWITCH STEREO BRIDGE MONO PARALLEL MONO CH 2 LEVEL CONTROL GROUND LIFT SWITCH CH 1 LEVEL CONTROL ADD A 14 GAUGE OR LARGER JUMPER BETWEEN THE RED CHANNEL 1 AN...

Страница 9: ...for loads with an im pedance greater than 4 ohms Parallel Mono mode should be used with loads of 4 ohms or less B R I D G E M O N O 1 Turn down the level controls fully counterclockwise and turn off t...

Страница 10: ...lly more sensitive to large voltage peaks while low frequency drivers woofers are typically most sen sitive to the heat from average RMS output power To protect your tweeters we recommend that you use...

Страница 11: ...unlikely that you will ever activate the amplifier s DC low frequency protection system impropersourcematerialslikesubsonicsquare waves or input overloads that excessively clip the input signal can a...

Страница 12: ...t an internal fuse blows please refer the unit to a qualified technician If the breaker in a Power Base 3 trips try to identify and correct the problem before re setting it with the back panel Circuit...

Страница 13: ...Common Mode Rejection CMR Better than 70 dB below rated full bandwidth power from 20 Hz to 1 kHz falling linearly to better than 50 dB at 20 kHz Controlled Slew Rate Greater than 13 volts ms Voltage G...

Страница 14: ...than 2 microhenries DC Output Offset Less than 10 millivolts Output Signal Stereo Unbalanced two channel Bridge Mono Balanced single channel Channel 1 controls are active Channel 2 controls should be...

Страница 15: ...in the real world without a clipped output signal Many manufacturers publish power specs with a tolerance of 1 dB or worse This means their amplifier can deviate more than 20 in output A 100 watt ampl...

Страница 16: ...Bridge Mono balanced output Parallel Mono 16 International Units 4 2 8 4 Fig 4 2 Power Base 2 Minimum Power Matrix 8 Power Base 3 Minimum Guaranteed Power Watts Stereo Mono Mode Stereo both channels d...

Страница 17: ...del was used because of its higher current demand Although it is an unusual condition your amplifier can function well with AC mains voltages up to 10 over the specified line voltage With overvoltage...

Страница 18: ...075 750 1065 750 520 395 1125 780 1120 775 565 395 1120 785 1110 775 Fig 4 5 Power Base 2 Maximum Power Matrix Fig 4 6 Power Base 3 Maximum Power Matrix 8 Power Base 3 Maximum Power Watts Stereo Mono...

Страница 19: ...signal from one amplifier to an other Because the MT XLR connectors are wired in parallel with the amplifier s built in phone jack connec tors an input signal fed to either input can be fed to another...

Страница 20: ...2 2 Factory Service To obtain factory service fill out the service informa tion page that follows and send it along with your proof of purchase and the defective unit to the Crown factory For warrant...

Страница 21: ...___________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________...

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