Hafler JF2000 Owner'S Manual Download Page 2

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TABLE OF CONTENTS

Introduction ..................................................... Page 1

Features .......................................................... Page 1

Installation and Setup.. ....................................

Page 2

Special System Configurations .......................

Page 4

Rear Panel ......................................................

Page 8

Operation ........................................................

Page 9

LED Displays ...................................................

Page 9

Care ................................................................

Page 1 0

Troubleshooting ..............................................

Page 1 0

Specifications .................................................. Page 1 2

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13

Summary of Contents for JF2000

Page 1: ......

Page 2: ...ion Page 1 Features Page 1 Installation and Setup Page 2 Special System Configurations Page 4 Rear Panel Page 8 Operation Page 9 LED Displays Page 9 Care Page 1 0 Troubleshooting Page 1 0 Specifications Page 1 2 Warranty Page 13 ...

Page 3: ...urrent require ments are easily supplied The JF2000 is fully rated for loads of 4 and 8 Ohms It is stable to 2 Ohms This means it will operate safely cleanly and stably into 2 Ohms but very high power dissipation may lead to frequent thermal shutdown The 16 output devices per channel assure operation well within the MOSFET Safe Operating Area with low imped ances and or reactive loads The output d...

Page 4: ...o 42 000 Microfarad capacitors This large energy storage capability provides a low impedance source of extremely high current for surges musical transients variations in speaker imped ance and very low frequencies Individual channel gain controls match the JF2000 to a wide range of installations Four Output Modes are available to fit almost any require ment Normal Stereo Stereo plus Bridged Mono B...

Page 5: ... larger to educe losses Speaker connectors are heavy duty gold plated 5 way binding posts spaced for standard banana jack connectors They will accept bare stranded wire up to approximately 12 Gauge Banana connectors may be more convenient For normal stereo operation leave ALL REAR PANEL SWITCHES IN The amplifier s left channel red binding post connects to the left positive speaker terminal and the...

Page 6: ...puts for the woofer and midrange or tweeters or if the system has a woofer in a separate box and satellite midrange and tweeters then the final sound from the system could be improved by biamplifying This means using two amplifers in normal stereo mode each being driven by a dedicated signal high or low frequency and loaded by a dedicated driver high or low frequency This allows different power le...

Page 7: ...standard position IN unless you have other reasons for using them Refer to Figure 3 Figure 3 Left positive terminal red to Left Speaker positive Left negative terminal black to Left Speaker negative Right positive terminal red to Right Speaker positive Right negative terminal black to Right Speaker negative Bridging an amplifier means using two amplifier channels to drive a single speaker Normally...

Page 8: ... mono mode USE CAUTION Most speakers cannot handle the power of the JF2000 in bridged mono mode Typical applications include driving large mono subwoofers large power hungry speaker systems or bi amp applications where large amounts of power are required In order to use both channels of input to sum the signal to drive a mono speaker set the input switch to stereo IN and the output switch to mono ...

Page 9: ...ng the input stereo You will connect the left speaker normally but the right speaker POS and NEG will be REVERSED from normal stereo The center bridged mono channel will be connected between the two RED MONO amplifier termi nals Refer to Fig 5 Figure 5 Left Positive terminal red to Left Speaker Positive Left Negative terminal black to Left Speaker Negative Right Negative terminal black to Right Sp...

Page 10: ...o Right input feeds Right channel OUT position Mono Left input feeds Right channel IN position Stereo normal Right channnel is in phase with Left OUT position Mono Right channel is reversed in phase compared to Left IN position Floating normal Chassis ground separate from Output section ground OUT position Chassis Chassis ground connected to output section ground This switch should be set for mini...

Page 11: ...rom left to right the front panel LEDs indicate Left Channel Status Right Channel Status and Power Status The Channel Status LEDs indicate the condition of the Left and Right channel outputs They will turn on GREEN to indicate a signal output of over about 200 Milliwatts They will switch to RED to indicate distortion over about 0 5 THD The Power Status LED will turn on GREEN to indicate power on I...

Page 12: ...ed to replace the carton and or packing consult your authorized dealer or Hafler Customer Service Department No user serviceable parts inside Do not disassemble ampli fier for any reason Refer to an authorized Hafler warranty station or to Hafler directly See Warranty Statement TROUBLESHOOTING LED Displays for The LED displays show a lot of information about how the Troubleshooting amplifier is ac...

Page 13: ... 4 Ohm speaker load per channel or is bridged into less than 8 Ohms the amplifier may not be able to produce continuous high output levels without overheating Re duce the loading by increasing load impedance 4 Fan is jammed or has failed Clear the obstruction or replace the fan 5 There may have been an internal malfunction Send amp to the factory or a qualified technician for repair The channel st...

Page 14: ...EW RATE Exceeds 80 Volts per Microsecond DISTORTION Less than 0 10 Total Harmonic Distortion plus Noise 20 Hz to 20 000 Hz both channels driven at full power IM DISTORTION IHF Less than 0 02 Stable into two Ohms May overheat and shut down rapidy if driven hard at 2 Ohms Over 110 dB unweighted with respect to full power 50 Amperes 20 Hz to 20 000 Hz 0 l 0 25 dB 5 Hz to 75 000 Hz 0 l 3 0 dB 5 Hz to ...

Page 15: ...r even eliminate the need for factory service The Hafler JF2000 is warranted for 3 years from date of purchase including parts labor and return shipping costs from the factory to the owner within the Continental U S A It is the owner s responsibility to pay shipping preferably UPS to the factory collect shipments will not be accepted Units under warranty should be accompanied by a copy of a dated ...

Page 16: ...Hafler A Division of Rockford Corporation 613 South Rockford Drive Tempe Arizona 85281 U S A 602 967 3565 ...

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