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Manual Hafler DH-200

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  • Hafler DH-200 - page 1

    THE POWE R AMPLIFIER INSTRUCTIONS for OPERATION and KIT ASSEMBLY CAUTION: IF THE SPEAKER FUSES BLOW, SOME DISTORTED SOUND CAN BE HEARD. THEREFORE IF AMPLIFIER MALFUNCTIONS, ALWAYS CHECK FOR BLOWN FUSES FIRST. seria l number in al l communications THE DAVID HAFLER COMPANY 5910 Crescent Boulevard, Pennsauken, New Jersey 08109 Hafler DH-200 Power Ampl ...

  • Hafler DH-200 - page 2

    INTRODUCTION The Hafler DH-220 is a two channel audio power amplifier designed to the very highest performance standards. It is available either as a kit, or fully assembled. Its 115 watt per channel power rating is sufficient for driving all loudspeakers in home applications, and its design assures extremely low distor- tion of all types. A combin ...

  • Hafler DH-200 - page 3

    INSTALLATION Th e DH-22 0 is most likely to be installed out of sight in most applications, since its power may be controlled by the AC switching of most audio preamplifiers, like the Hafler DH-110. If your control unit does not provide switching capacity sufficient for the amplifier ’ s 7 amp needs (plus other equipment it is also switching), yo ...

  • Hafler DH-200 - page 4

    performance. Special low capacitance cables enable even greater distance between preamp and amplifier. It is desirable to keep the left and right input cables close together throughout their length to minimize the likelihood of hum pickup. Also, you should avoid running them parallel to AC cord s - these should be crossed at right angles. Output Th ...

  • Hafler DH-200 - page 5

    A soldering “ gun ” is not recommended. The unfamiliar user is more likely to damage the etched circuit boards with its higher heat potential and unbalanced weight. Also, because he may not wait long enough for it to reach operating temperature each time it is switched on, poor solder connections are more likely. Pencil irons are much lighter a ...

  • Hafler DH-200 - page 6

    Wiring the Kit If any components are unfamiliar to you, checking the pic- torial diagram should quickly identify them. Or, the quantities, and the process of elimination as you check the parts list, will help. The pictorial diagram is necessarily distorted to some ex- tent for clarity, so that you can trace every wire in a single overall view for v ...

  • Hafler DH-200 - page 7

    5 n Select the two round fuse holders, and two each 1/2” rub- ber washers, lockwashers and nuts. First install the rub- ber washer on the holder, so it will be outside the chassis, and then fasten the fuse holders at LF and RF, with the tip lugs pointing towards each other, toward the center of the chassis. 6 U Select the two input sockets and 4 ...

  • Hafler DH-200 - page 8

    19 c3 Prepare a 7 ” green wire. Connect one end to terminal LB. (S-2). Place this wire towards the center of the chassis. 20 Ll Prepare a 10 ” white wire and a 10 ” green wire. Starting with the white wir e 3/4" longer, twist them together. Con- nect the projecting white wire to red terminal RR. (S). Connect the green wire to terminal RB ...

  • Hafler DH-200 - page 9

    The transformer leads may be trimmed as desired for a neat job, but be sure you do not cut any of them too short (particularly if yours is the multi-voltage version, and any change to a different supply voltage is likely). Cutting the leads too short for re-use may void its warranty, if it is thought to be defective. Consult the multi-voltage diagr ...

  • Hafler DH-200 - page 10

    55 I 56 [ 57 : 58 : 59 I 60 : 61 1 62 ! 63 I 64 : Select the white pair of wires at the front of the chassis. Tuc k the excess-wire into the corner and connect one wire to each of the lugs on the thermal breaker. Solder each. Select the left output module, check it as before to see that underside connections near the holes are secure, and that the ...

  • Hafler DH-200 - page 11

    Bias Remove th e B + fus e F2. Thi s fuse is in the line from th e ’ + ’ capacito r terminal to hol e #3 on the board. Connect an ammeter ’ s ' + ' !ead to the fuse clip nearest the large filter capacitors. Connect the ’ - ’ lead to the other side of the fuse clip. Avoid intermittent connections, and do not short the leads toget ...

  • Hafler DH-200 - page 12

    The power transformer supplied i n DH-220 amplifiers sold in th e lJSA 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 windings which can be arranged in various series-parallel combinations for 100, 110, 120 , 200, 220 and 240 volt 50 or ...

  • Hafler DH-200 - page 13

    KI T PARTS LIST Minor variations may sometimes be encountered in value or appearance. These will not affect performance. Part No. Fuse Envelope 6 Fuse, 5 ampere 2 Fuse, 2 ampere 1 Fuse, 7 ampere, Slo-Blo 1 Additional fuse, 4 ampere, Slo-Blo (International use only) 1 1 2 2 1 4 2 1 2 2 1 2 2 2 1 1 1 1 1 1 1 1 1 Chassis Cover Capacitor . 10,000 mfd, ...

  • Hafler DH-200 - page 14

    ...

  • Hafler DH-200 - page 15

    COMPONENT VALUES All resistors ar e l/4 w carbon fil m unless specified otherwise Rl 470,000 ohms R2 1,800 ohms R3 47,000 ohms R4 47,000 ohms R5 1,000 ohms R6 1,000 ohms R7 47,000 ohms R8 560 ohms R9 560 ohms RIO 1,800 ohms Rll 1,800 ohms R12 270 ohms R13 47 ohms R14 47 ohms R15 47 ohms R16 47 ohms R17 1,800 ohms R18 1,800 ohms R19 270 ohms R20 1,8 ...

  • Hafler DH-200 - page 16

    SPECIFICATIONS Power Rating: Les s than 0.02% total harmonic distortion at any power level up to 115 watts continuous average power per channel into 8 ohms at any frequency between 20 Hz and 20 kHz with both channels driven. Input Impedance: 47,OOO ohms. Input Sensitivity : 1.55 volts rms for 1 15 watts into 8 ohms. I M Distortion (SMPTE) : Les s t ...

  • Hafler DH-200 - page 17

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  • Hafler DH-200 - page 18

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  • Hafler DH-200 - page 19

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  • Hafler DH-200 - page 20

    INSTRUCTIONS FOR THE HAFLER DH-222 AMPLIFIER BRIDGING KIT FOR THE DH-220 The DH-222 may be installed in a Hafler DH-220 power amplifier to enable easy conversion to a high power monophonic amplifier, bridging the two conventional chan- nels to a single floating output which can deliver in excess of 400 watts into an 8 ohm load. Its rated power outp ...

  • Hafler DH-200 - page 21

    DH-222 INST ALLATIO N INSTRUCTIONS 10 2cl 30 40 50 60 70 80 Disconnect AC power from the amplifier, and remove all con- necting cables. Wait 5 minutes to allow capacitors to discharge before proceeding with disassembly. Remove all 8 screws between the fins of each amplifier module so that the cover may be removed, and the modules tilted out- wards ...

Manufacturer Hafler Category Stereo Amplifier

Documents that we receive from a manufacturer of a Hafler DH-200 can be divided into several groups. They are, among others:
- Hafler technical drawings
- DH-200 manuals
- Hafler product data sheets
- information booklets
- or energy labels Hafler DH-200
All of them are important, but the most important information from the point of view of use of the device are in the user manual Hafler DH-200.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Hafler DH-200, service manual, brief instructions and user manuals Hafler DH-200. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Hafler DH-200.

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A complete manual for the device Hafler DH-200, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Hafler DH-200 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Hafler DH-200.

A complete Hafler manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Hafler DH-200 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Hafler DH-200, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Hafler DH-200, that we can find in the current document
3. Tips how to use the basic functions of the device Hafler DH-200 - which should help us in our first steps of using Hafler DH-200
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Hafler DH-200
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Hafler DH-200 in a specific country, if it was not possible to solve the problem on our own.

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