Hafler DH-200 Assembly And Operating Instructions Manual
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Hafler DH-200 Assembly And Operating Instructions Manual

Power amplifier
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THE

POWER AMPLIFIER

DH-200
INSTRUCTIONS
for ASSEMBLY
and OPERATION
929204
Please refer to this serial
$3.00
number in all communications
regarding this equipment.
THE DAVID H A F L E R C O M P A N Y
5910 Crescent Boulevard, Pennsauken, New Jersey 08109

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  • Page 1: Power Amplifier

    POWER AMPLIFIER DH-200 INSTRUCTIONS for ASSEMBLY and OPERATION 929204 Please refer to this serial $3.00 number in all communications regarding this equipment. THE DAVID H A F L E R C O M P A N Y 5910 Crescent Boulevard, Pennsauken, New Jersey 08109...
  • Page 2 So rugged is the Nothing hinders the essential purity of the audio signal. DH-200 that it can deliver as much as ten amperes into a short circuit! Those who use these instructions to assemble the DH-200 kit will find that the left and right audio modules The speed —...

  • Page 3: Installation

    INSTALLATION The DH-200 is most likely to be ihstalled out of sight in more sensitive than others, and require separation from the most applications, since its power may be controlled by the amplifier. Check at a comparatively high volume setting, and AC switching of most audio preamplifiers, like the Hafler while swinging the tone arm throughout its arc.
  • Page 4 Check your work carefully after each step. 60/40 (60% tin) ROSIN CORE solder, 1/16" diameter or smaller. The DH-200 preamplifier is a versatile component with sophisticated circuitry which has been made remarkably easy A damp sponge or cloth to wipe the hot tip of the iron.
  • Page 5 A soldering "gun" is not recommended. The unfamiliar nection by heating it and allowing the solder to flow onto the user is more likely to damage the etched circuit boards with iron, which is then wiped on the sponge. its higher heat potential and unbalanced weight. Also, because he may not wait long enough for it to reach operat­...
  • Page 6 Wiring the Kit Mechanical Assembly 1 • When you unpack your kit, you will find that the If any components are unfamiliar to you, checking the transformer, large capacitors, and the output assem­ pictorial diagram should quickly identify them. Or, the quan­ blies have been temporarily fastened to the chassis for tities, and the process of elimination as you check the parts safe shipment.
  • Page 7 6 • Select the larger round input socket, its insulating disc, 14 • Prepare a 6-1/2" white wire. Connect one end to FR the solder lug with lockwasher teeth, two #4 screws, lug #3. Connect the other end to F L lug #3. (S). and the two nylon nuts.
  • Page 8 26 • Prepare two 20" white wires, and twist them together make a sharp "V" in the cord by bending it back sharply on itself. Install the strain relief as shown, with throughout their length. Six inches in from one end of the pair, cut one of the wires, and unwind it about the small end of the strain relief nearest the stripped end of the line cord.
  • Page 9 the right side, nearest the power switch. Install the two Wires will be connected from the top ot the board, and they sets of hardware to secure the bracket to the chassis. If must be soldered to the underside. Even though the connect­ the bracket twists as the screws are tightened, first in­...

  • Page 10: If Problems Arise

    70 • Select four sheet metal screws and fasten the module to the chassis, making sure no wires are pinched. A great deal of care has gone into every Hafler amplifier, 71 • Select the green and white pair from input socket LS.

  • Page 11: Service Policy And Limited Warranty

    W A R R A N T Y FOR KIT-BUILT UNITS freight prepaid to the factory service department. Units ship­ The parts in a DH-200 kit are warranted for a full year ped freight collect will not be accepted. For units to be from the purchase date.

  • Page 12: Ac Line Connections For Overseas Use

    AC LINE CONNECTIONS FOR OVERSEAS USE The power transformer supplied in DH-200 amplifiers sold in the USA is intended for 120 volt, 60 Hz operation only. For use in other countries, a multi-voltage transformer is available at higher cost. It has dual tapped primary wind­...

  • Page 13: Kit Parts List

    KIT PARTS LIST Minor variations may sometimes be encountered in value 1 Chassis 711007 or appearance. These will not affect performance. 1 Cover 711008 Capacitor, 10,000 mfd, 75V 294103 Bracket, round, for capacitor 717058 Fuse Envelope Diode rectifier block 544252 Part No.

  • Page 14: Schematic Diagram

    SCHEMATIC DIAGRAM © Copyright 1980. All rights reserved.

  • Page 15: Component Values

    COMPONENT VALUES 10 mfd, 16 V , non-polarized A l l resistors are 1/4 watt 5% carbon film unless otherwise noted. Part No. electrolytic 203106 470,000 ohms 139474 390 pF, 500V, Mica 257391 2,200 ohms 139222 0.001 mfd, 100V, Film 264102 22,000 ohms 139223...

  • Page 16: Specifications

    SPECIFICATIONS Power Rating: Less than 0.02% total harmonic distortion Input Impedance: 22,000 ohms. at any power level up to 100 watts continuous average power per channel into 8 ohms at any frequency bet­ Input Sensitivity: 1.5 volts rms for 100 watts into 8 ohms. ween 20 Hz and 20 k H z with both channels driven.
  • Page 17 HAFLER DH-200 STEREO POWER AMPLIFIER P I C T O R I A L D I A G R A M ©COPYRIGHT 1980. ALL RIGHTS RESERVED POWER TRANSFORMER 120 Volt AC Line Connections shown...

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