Hafler audio

TA THX, rare more expensive Are there any underrated gems or sleepers in this list? How do these compare to the cheaper Adcoms, e.

The planning and hoped for results with any of our mods will depend, to some degree, on the underlying health of the original amp. Consider these helpful improvements. We have given short shrift to these amps so let us begin to remedy that. The kit prices are same, but some amps require more labor, i. Other modifications touted for the home versions work quite well. Our instructions are aimed at home versions.

Hafler audio

Author: Karsten Hein. Tag s : Power Amplifiers. There was a time when my good friend Luigi was bringing HiFi gear by our house for testing on a regular basis. And although there were lots of interesting discoveries to be made, somehow the devices did not strike a chord with us to the extent that we actually wanted to own them. One day, as I was climbing up the staircase from an evening teaching classes, I could hear music playing in the living room that sounded very realistic, even from a distance. Whatever this is, I was thinking to myself taking the last few steps, this is going stay. The system Luigi had set up for us was a Hafler combo consisting of the DH preamplifier and the 60 watts DH power amplifier. And its musicality was beyond anything we had heard at the time. When I later asked my wife at which point she knew that this would stay, she said that she had already heard it was very special from the kitchen - which is about thirty feet down the hall. There are not many amplifiers capable of winning over our hearts from 30 feet away with such unanimous vote and certainly not at a price tag that most people are able to afford. Because of the obvious qualities of the Halfer, Luigi decided to purchase the watts DH and had it readjusted and fitted with new caps. The class-A portion of the amplifier was increased in the process, which has a positive impact on sound and leads to greater heat dispersion. I think you can literally fry an egg on this unit.

Life goes on. I hafler audio get a chuckle out of Scott's encyclopedic knowledge of tragic equipment failures. Show original message.

The Hafler circuit is a passive electronics circuit with the aim of getting derived surround sound or ambiophony from regular stereo recordings without using costly electronics. Such circuits are generally known as matrix decoders. The Dynaquad system works using similar principles. Named after its early proponent audio engineer David Hafler , the circuit exploits the high amount of stereo separation between Left and Right channels and sound phase. The rear channels will playback out of phase sounds, while the forward channels are unaffected. Using the circuit typically reduces stereo separation by only about 2 dB and the rear speakers are only required to reproduce a limited frequency range allowing them to be smaller and cheaper. The rear sound level in a live performance recorded in stereo is reproduced about 7 dB below the front level, but clearly audible.

David Hafler February 7, — May 25, was an American audio engineer. He was best known for his work on an improved version of the Williamson amplifier using the ultra-linear circuit of Alan Blumlein. In , Hafler founded Acrosound with his colleague Herbert Keroes. This company was primarily in the business of designing and manufacturing transformers for tube amplifiers. Around this time Hafler and Keroes popularized the ultra-linear output-stage for audio amplifiers. However, the partnership did not last. In Hafler founded Dynaco with Ed Laurent. Hafler was instrumental in bringing affordable, high-quality audio kits to hobbyists, making his name a household word in the US audio community for many years.

Hafler audio

Amazingly, its clear, three-dimensional sound is comparable to many amplifiers made today. McIntosh MC While the MC put the signature big blue meters in the market, many people consider this the greatest amplifier ever made. Released in as the MI for commercial applications, it eclipsed any amplifier of the day with an extraordinary watts per channel. The consumer version, MC established McIntosh as the premier audio company of the day. Phase Linear It was and Bob Carver saw the future and brought to market a product that would set the stage for a new audio segment—affordable, mass-market, high-performance audio.

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Elliott Sound Products. The PA PA-8 is installed only for now. Sign up for the newsletter Subscribers will receive regular updates with links to the newest audiophile reviews and articles on eiaudio. Paul Stamler. In fact, it's a very impressive amplifier. If I read everything correctly, 1. Ambiophony or ambiophonic sound should not be confused with Ambiophonics or Ambisonics. They also need only a minimum of compensation. The crosstalk or loss of stereo separation in the front speakers was generally less than 2 dB , while the rear sound level in a typical recorded live performance was about 7 dB below the front, but clearly audible. Lots of s, and not much decoupling.

The Hafler circuit is a passive electronics circuit with the aim of getting derived surround sound or ambiophony from regular stereo recordings without using costly electronics. Such circuits are generally known as matrix decoders. The Dynaquad system works using similar principles.

September 11, Scott Dorsey. It's not a Hafler, but it's decent. This can be most easily achieved by wiring two similar additional rear speakers in series between the live feeds positive terminals from the stereo amplifier. Whatever this is, I was thinking to myself taking the last few steps, this is going stay. The new designs were less vulnerable to thermal runaway , allowing them to operate reliably at higher power without requiring expensive protective circuitry. David Hafler died from complications of Parkinson's disease in Philadelphia, Pennsylvania, at the age of Visit these pages - Amp Options including maintenance suggestions, power supplies PS Toggle limited content width. It depends on who designed what. Hafler sold his company to the Rockford Corporation in How do these compare to the cheaper Adcoms, e. Our PA PA-8 is installed only for now. Quadraphonic sound.