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NOTICE - IMPORTANT SAFETY INFORMATION The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the products enclosure, that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral WARNING: TO PREVENT FIRE OR triangle is intended to alert the user of the SHOCK HAZARD, DO NOT EXPOSE THIS presence of important operating and mai
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11. NON-USE PERIODS During periods of extended non-use, the power cord should be unplugged from the power source. 12. CLEANING The equipment should be cleaned only as detailed in the operating instructions. 13. OBJECT AND LIQUID ENTRY Care should be taken so that objects and/or liquids, such as cleaning fluids or beverages, are not spilled into the enclosure of the equipment. 14. DAMAGE REQUIRING SERVICE Hafler equipment should be serviced by qualified service personnel when: A. The power supply
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TABLE OF CONTENTS 4 .......................................................................................... PERFORMANCE SPECIFICATIONS 4 General Information .............................................................................................................. INSTALLATION 5 Rackmounting.. ...................................................................................................................... 5 Ventilation/Placement.. ................................................
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PERFORMANCE SPECIFICATIONS All specifications are for 20 Hz - 20 kHz, at full power into 8 ohms, unless specified otherwise. Power Rating: 9180: 105 watts per channel (8 ohms) 150 watts per channel (4 ohms) 300 watts mono (8 ohms) 9270: 135 watts per channel (8 ohms) 200 watts per channel (4 ohms) 400 watts mono (8 ohms) Rated THD: less than 0.025%, typically 0.005% at 1 kHz Full Power Bandwidth: 0.3 Hz to 116 kHz Signal to Noise Ratio: greater than 100 dB, unweighted Input Impedance: 47,000 ohm
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INSTALLATION The 9180/9270 Amplifier is supplied in either a 17” Black Version, or a 19” Silver Version. The 19” RACK- MOUNTING model has rackmounting holes provided for installation in equipment racks. The holes are on standard EIA spacings. Due to conflict with adjacent equipment, it may be advisable to remove the four rubber feet from the bottom of the unit. The feet may be removed from the outside, with no dis-assembly of the chassis necessary. The 9180/9270 Amplifier can produce considerabl
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POWER SWITCH UP - ON LEFT/MONO GAIN - OFF DOWN RACKMOUNT HOLES RIGHT RACK HANDLES (19” VERSION ONLY) (19” VERSION ONLY) GAIN 9180 / 9270 AMPLIFIER FRONT PANEL VIEW
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MONO/STEREO SWITCH Gt IN -MONO RI iT OUT - STEREO IN IT AC LINE LEFT/MONO VOLTAGE RATING INPUT - I I I!I - T T - LINECORD MONO+ CONNECTOR OUTPUT + - RIGHT LEFT OUTPUT OUTPUT 9180 / 9270 AMPLIFIER REAR PANEL VIEW
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OUTPUTS All output connections to the amplifier must be performed with the amplifier off! I The left and right audio outputs from the amplifier are via standard 5-way type, 3/4” spacing, binding posts. Connect these binding posts to the loudspeakers. The amplifier’s binding posts will accept single or dual banana plugs, spade lugs, pin plugs, or bare wires. If using bare wires, it is recommended that the ends of the wire be tinned with solder so that no stray strands can cause a short circuit to
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CIRCUIT HIGHLIGHTS The input stage of the 9180/9270 Amplifier utilizes four low-noise, High-g, JFET’s (high transconductance junction field-effect transistors), in a fully complimentary, symmetric configuration. This circuit configu- ration results in excellent front-end headroom and a simple, straightforward connection to the remainder of the circuitry. The ultra low noise characteristics of the JFET’s virtually eliminates noise “mixing” (intermodulation) with the music signal, reducing discord
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ADDITIONAL INFORMATION LOUDSPEAKER The 9180/9270 Amplifier is suitable for use with a wide variety of loudspeaker types and load LOAD IMPEDANCE impedances. Though not rated for impedances below 4 ohms, the amplifier is capable of driving CONSIDERATIONS lower impedances. Operation at low impedances is limited by the thermal dissipation capacity of the heatsinks and the airflow around the unit. Operation at very high power levels into low impedances for extended periods may overheat the amplifier,
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WARNING! UNPLUG THE UNIT FROM AC POWER BEFORE ATTEMPTING THIS PROCEDURE. FAILURE TO DO SO CAN RESULT IN SEVERE ELECTRICAL SHOCK. REQUIRED TEST EQUIPMENT: Milliammeter capable of measuring at least 300 mA. Remove the top cover by removing the seven allen head screws (three on each side, one at rear 1) center). Using the diagram “Component Layout” as a guide, find the fuses labelled F1 and F2 for the left 2) channel, or F1 01 and F102 for the right channel. Working on one channel at a time, remove
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It may be necessary to use additional adaptors on other grounded components if more than two components are earth grounded. (In other words, only one earth ground per system should exist.) Another potential source of multiple earth grounds is from coaxial antenna or cable service feeds for FM or video sources, which usually are (and should be) earth grounded. The ground adaptor(s) should cure this grounding problem as well. WARNING: The use of ground adaptors (with the ground tab or wire of the
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PART NUMBER DESIGNATOR VALUE DESIGNATOR VALUE PART NUMBER R33,R133 47.5K RMP/4-4752 C21,C121 0.01, Polypropylene CPP-103A R34,R134 33.2K RMP/4-3322 C22,C122 0.01, Polypropylene CPP-103A R35,R135 47.5K RMP/4-4752 C201 0.01, Polycarbonate CYV-103 RMP/4-1000 R36,R136 100 C301 15000, Electrolytic CER-159ES R37,R137 100 RMP/4-1000 C302 15000, Electrolytic CER-159ES R38,R138 100 RMP/4-1000 C303 0.01, Ceramic CD-l 03/20 RMP/4-1001 R39,R139 100 C304 0.01, UL Approved CD-103A R40,R140 15K RMP/4-1502 R41,
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LEFT/MONO b LEFl- LEFT/MONO OUTPUT INPUT MONO/STEREO SWITCH RIGHT INPUT THERMAL SOFT THERMAL - PROTECTION - TURN ON/OFF SENSORS b SYSTEM SYSTEM A 9180 / 9270 FUNCTIONAL BLOCK DIAGRAM
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NOIlVtl( NOIlVtl(
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R23 (SEE F&b CHART) d+HV lRl5 RI7 1 1 , 2: 6 2N7000 R40 T -a-*, I (SEE FL% CHART) ZiRCUIT SCHEMATIC DIAGRAM RMSED 1 l/13/91 R201 jl5V +HV- ; - 7.5K CR201 1 N5245>’ 11 l---T-++'+Hv l---T-++'+Hv R210 68.1 K R212 33.2K $ C20, ::a 0.01 .’ b TO R. CH. @I + TO L. CH. @
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NOTE!3 UNLESS SPECIFIED OTHERWISE 1. ALL RESISTORS IN OHMS R33 47.5K 7; 2. ALL CAPACITORS IN MICROFARADS 3. COUPONENT DESIGNATORS: l-99: LEFT CHANNEL 101-199: RIGHT CHANNEL 201-299: COMMON PARTS J101 301-399: CHASSIS/POWER SUPPLY RIGHT INPUT 4. Ql7/Q117 & Q20/Q120 NOT PRESENT ON SERIES 9180 5. LEFT CHANNEL ONLY SHOWN 6. STEREO/MONO SWITCH SHOWN IN STEREO R34 7. VOLTAGE SELECTOR SHOWN IN 1OOV POSITION 33.2K 6. Ql/QlOl & Q2/Q102 USE TWO 2SK163 SINGLE JFE T 'S OR ONE 2SK389 DUAL JF E T !%I”’ 9. Q3/
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SERVICE POLICY AND LIMITED WARRANTY If you encounter any difficulty or have any question concerning your 9180/9270 Amplifier, please call our Customer Service Department weekdays, 8 a.m. to 3:30 p.m., Mountain Standard Time, at 602-967-3565. Should you have any doubts as to whether the amplifier is malfunctioning and requires service, please call us before sending in for repair. All units being returned (regardless of warranty status) must receive a Return Authorization (RA) number. In addition,
