Hafler DH-110 manual Specifications, Phono Preamp Section

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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: -3dB @ 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.

Net Weight: 10 lbs.

 

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© Copyright 1985. All rights reserved.

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Contents Preamplifier Specifications Phono Preamp SectionIntroduction AdditionalPower Connections Operation Mono Switch Proper Soldering ALL Solder Used Must be Rosin Core Building the KIT With the front lug, and the #6 lug at the top. InsertPage Page Ight Phono Left PHON’ Co 0 Page If a Problem Arises AC Line Connections for Overseas USEAdditional Information Rl Value Kohms Desired Load KohmsMinimizing Noise in the System Functional Block Diagram Component Values Power Supply I5L NON-COMPONENT Back Side Service Policy and Limited Warranty Warranty for Factory Assembled Units

DH-110 specifications

The Hafler DH-110 is a revered preamplifier recognized for its remarkable performance and versatility in the audio industry. First launched in the early 1980s, the DH-110 developed a reputation for delivering high-quality sound reproduction, making it a favorite among audiophiles and home theater enthusiasts alike.

One of the key features of the Hafler DH-110 is its dual-mono design, which ensures that the left and right channels are processed independently. This configuration helps to eliminate crosstalk and maintain clarity, particularly in complex musical passages. The DH-110 employs high-quality components throughout its circuitry, including metal film resistors and film capacitors, which contribute to a clean signal path and minimize distortion.

The preamplifier offers a wide range of inputs, accommodating various sources such as turntables, CD players, and tape decks. The inclusion of a phono stage for both moving magnet and moving coil cartridges is a standout feature, allowing vinyl enthusiasts to achieve optimal sound quality from their records. This versatility is enhanced by selectable input sensitivity, ensuring that each source can be tailored for the best performance.

Additionally, the DH-110 supports tone control, featuring bass and treble adjustments that enable users to dial in their desired sound signature. While some audiophiles prefer a pure, unaltered sound, the option to adjust bass and treble can be appealing for customizing the listening experience.

The design of the DH-110 exudes classic elegance, incorporating a simple yet functional aesthetic with a robust chassis designed to minimize resonance. The front panel includes clearly labeled knobs and buttons, ensuring ease of use during operation.

In terms of connectivity, the Hafler DH-110 includes both tape monitoring loops and multiple outputs, allowing seamless integration into existing audio systems. The preamplifier can be connected to various power amplifiers, delivering a balanced audio experience that meets the demands of both casual listeners and serious audiophiles.

In conclusion, the Hafler DH-110 is a testament to quality engineering, offering superior performance, versatility, and user-friendly operation. Its combination of advanced technologies, including a dual-mono architecture and high-grade components, make it a timeless choice for anyone seeking to enhance their audio experience with a reliable preamplifier. Whether for home theater use or critical listening, the DH-110 continues to be a solid investment for audio enthusiasts.