User manual HAFLER DH-110

[. . . ] THE PREAMPLIFIER DH-110 INSTRUCTIONS for ASSEMBLY and OPERATION LM132 $3. 00 THE DAVID HAFLER COMPANY 5910 Crescent Boulevard, Pennsauken, New Jersey 08109 Please refer to this serial number in all communications regarding this equipment. DH-110 SPECIFICATIONS The numbers in parentheses refer to the paragraph in the IHF specifications manual which defines the test procedure. PHONO PREAMP SECTION Rated Output: 3 Wms, 8 Hz-105 kHz Maximum Output (3. 5): 12 Vrms, 20 Hz-20 kHz at recording output Total Harmonic Distortion: Less than 0. 0006% @ 1 kHz, 3 Vrms Frequency Response (3. 13): +0, -0. 25 dB, 20 Hz-20 kHz RIAA Equalization Accuracy: +0, -0. 1 dB, 30 Hz-15 kHz Full Power Bandwidth: -6 dB, 4 Hz-210 kHz Sensitivity (3. 7): 12. 5 millivolts Maximum Input Signal @ 1 kHz (3. 8): 300 millivolts; [3 V @ 20 kHz] Gain: 34 dB @ 1 kHz Input Impedance: 47, 000 ohms in parallel with 30 pF; user adjustable. Plug-in capacitors are installed to increase this to 150 pF on Phono 1; 250 pF on Phono 2 Signal to Noise, weighted (3. 12): 87 dB Slew Rate: 12 volts per microsecond LINE AMPLIFIER SECTION Rated Output: 3 Vrms, 4 Hz-210 kHz Maximum Output (3. 5): 14 Vrms, 20 Hz-20 kHz Total Harmonic Distortion (3. 4): Less than 0. 001%, 20 Hz-20 kHz Frequency Response (3. 13): +0, -0. 1 dB, 20 Hz-20 kHz Full Power Bandwidth: -6 dB, 2 Hz-420 kHz Sensitivity (3. 7): 50 millivolts Maximum Input Signal @ 1 kHz (3. 8): 14 Vrms; volume control @ -20 dB Gain: 20 dB ± 1 d B Input Impedance: Greater than 25, 000 ohms Signal to Noise, weighted (3. 12): 90 dB Slew Rate: 12 volts per microsecond Rise Time: 2. 5 microseconds maximum, Phono in / Line out, 10 Vp-p, 1 kHz square wave; load is 10, 000 ohms in parallel with 10 nF Crosstalk (3. 14): down 72 dB, any input to any output Separation (4. 2): greater than 82 dB @ 1 kHz; greater than 52 dB @ 20 kHz Gain Tracking Error (4. 4): less than 0. 5 dB Maximum Output Noise: less than 350 microvolts, wideband less than 95 microvolts, `A' weighted [with 1 Kohm input termination, volume full CW] Bass Control: 217 dB @ 20 Hz, moving inflection, variable turnover Treble Control: ±17 dB @ 20 kHz, shelving @ 5 kHz, fixed turnover Filter Response: -3 dB @ 25 Hz; -6 dB @ 15 Hz; -12 dB @ 8. 2 Hz; -25 dB @ 3 Hz Filter Cutoff (3. 13. 2. 2. 1; 3. 13. 2. 2. 2): 25 Hz; -12 dB/octave GENERAL SPECIFICATIONS Semiconductors: 30 transistors, 3 ICs, 12 diodes, 2 LEDs Inputs: 2 Phono, Tuner, Compact Disc or Video, 2 Tape recorders, EPL Outputs: 2 Tape (buffered), 2 Line, EPL, Headphone Jack Controls: Volume, Balance, Bass, Treble, Input Selector, Phono l/2 Selector, Monitor Selector, Mono-Stereo, Filter, External Processor Loop, Tone Control Engage, Power Intermodulation Distortion: Both SMPTE and CCIF IMD at operating levels from phono input to line output are below the residual of currently available instrumentation AC Supply Voltage: 100-130 and 200-260 VAC, 50/60 Hz Power Consumption: 3. 5 watts AC Convenience Outlets: 3 switched, 5 amp continuous, 72 amp surge 1 unswitched, 5 amp continuous Size: 17" wide x 3" high x 8½" deep 19" rack mounting accessories included Shipping Weight: 12. 5 lbs. All rights reserved. INTRODUCTION Your preamplifier is the control center of your music system, acting as an interface between the sound sources-record players, tape recorders, FM and Video tuners-and the power amplifier which drives the loudspeakers. [. . . ] (S). 5 @ Prepare another 14%" green wire with 3/8"stripped from one end. Prepare one end of a 14½" black wire. Prepare another 14½" red wire. Start with the longer green wire end ¼" longer than the red wire, and the bare end of the black wire ½" shorter than the red wire. Insert the longer end of the green wire through lug #3 of the phone jack and connect it to lug #4. (S). 9 0 Select the two 22, 100 ohm resistors (red, red, brown, red) and install them at locations R50 and R150. 10 0 Select the two 1, 100 ohm resistors (brown, brown, black, brown) and install them at R21 and R121. 11 0 Install the four 1 megohm resistors (brown, black, black, yellow) at locations R22, R23, R122 and R123. 12 0 Select the two 4-pin molded sockets. These are to be installed at locations J26 and 5126 on the front of the board, with the pins through the upper row of holes (arrow) at each location. The lower row of holes provides access from the rear of the board for plug-in capacitors. lb assure correct alignment of the socket, insert a capacitor lead from the rear into holes E, F, G and H to engage the sockets while you solder the pins, and then remove the capacitors. Be sure solder flows freely around each mounting pin for a good connection. Sometimes these pins do not accept solder easily. 13 0 The proper way to install the 24 phono input sockets is to first insert a phono plug (on the end of one of the audio connecting cables supplied in the kit) so that the center contact will not be deformed in the mounting process. Adjacent to the center hole for 9 each socket, the board is marked to indicate the side of the hole on which the center mounting tab should be positioned, so that it will be soldered to the widest part of the circuitry on the back side. Leave the phono plug in the socket while bending and soldering is completed. If you do not bend the center tab quite flat against the board, it is easier for solder to flow under the tab for a good connection. Solder both outer socket lugs first (they need not be bent over), and then the center tab on each socket. At J9 be careful that a solder bridge is not made between the center contact and the adjacent circuit track. Be sure holes Q and S are not filled with solder when installing sockets J 11 and J 1 1 1. 14 0 Select the two right angle 15-pin plugs, and install Then grip the larger portion of the strain relief with the tips of the pliers, squeeze it tightly, and insert the end of the cord and the strain relief through the panel hole from the outside. [. . . ] Shipment should be made via United Parcel Service whenever possible. We will not be responsible for damage caused by parcel post shipment; repairs in this case will be made solely at the owner's expense. Be sure you insure for the full value of an assembled unit. Use the original carton and packing materials, and enclose all of the following: 1. [. . . ]