Hafler DH-200 User Manual

THEPOWERAMPLIFIERINSTRUCTIONSfor OPERATIONand KIT ASSEMBLYCAUTION:IF THE SPEAKER FUSES BLOW,SOME DISTORTED SOUND CAN BEHEARD. THEREFORE IF AMPLIFIERMA

55 I56 [57 :58 :59 I60 :61 162 !63 I64 :Select the white pair of wires at the front of the chassis.Tuck the excess-wire into the corner and connect on

BiasRemove the B + fuse F2. This fuse is in the line from the ’ +’capacitor terminal to hole#3 on the board. Connect anammeter’s ' + ' !ead

The power transformer supplied in DH-220 amplifiers sold inthe lJSA is intended for 120 volt, 60 Hz operation only. For usein other countries, a multi

KIT PARTS LISTMinor variations may sometimes be encountered in valueor appearance. These will not affect performance.Part No.Fuse Envelope6 Fuse, 5 am

COMPONENT VALUESAll resistors are l/4 w carbon film unless specified otherwiseRl 470,000 ohmsR2 1,800 ohmsR3 47,000 ohmsR4 47,000 ohmsR5 1,000 ohmsR6

SPECIFICATIONSPower Rating: Less than 0.02% total harmonic distortion atany power level up to 115 watts continuous average powerper channel into 8 ohm

INTRODUCTIONThe Hafler DH-220 is a two channel audio power amplifierdesigned to the very highest performance standards. It isavailable either as a kit

INSTRUCTIONS FORTHE HAFLER DH-222 AMPLIFIER BRIDGING KITFOR THE DH-220The DH-222 may be installed in a Hafler DH-220 poweramplifier to enable easy con

DH-222 INSTALLATION INSTRUCTIONS102cl304050607080Disconnect AC power from the amplifier, and remove all con-necting cables. Wait 5 minutes to allow ca

INSTALLATIONThe DH-220 is most likely to be installed out of sight in mostapplications, since its power may be controlled by the ACswitching of most a

performance. Special low capacitance cables enable evengreater distance between preamp and amplifier. It is desirableto keep the left and right input

A soldering “gun” is not recommended. The unfamiliar user ismore likely to damage the etched circuit boards with its higherheat potential and unbalanc

Wiring the KitIf any components are unfamiliar to you, checking the pic-torial diagram should quickly identify them. Or, the quantities,and the proces

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

19 c3 Prepare a 7” green wire. Connect one end to terminalLB. (S-2). Place this wire towards the center of thechassis.20 Ll Prepare a 10” white wire a

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 ifyours is the multi-vol