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Amplifier War and Peace – An Hybrid Amp

They sound absolutely great, both as for what they are intended – to work as a good old analog radio – but also as an amplifier for external audio sources, including any digital source. In this high quality project, Robert Nance Dee designs a potentiometer for accuracy and flexibility. As the author described, a great project for discriminating audiophiles.

There is an emotional appeal to loud music but care must be taken to avoid aduioxpress hearing damage.

These were made based on earlier patents also awarded to Leendert Prins. The high input impedance of the power transistor does not affect speaker performance when connected to the amplifier output terminals. This article was originally published in audioXpress October May 31, by Vincent Thiernesse.

Audio Express AudioXpress Magazine October Hobby Audio Technology | eBay

A detailed process for hearing is described including a picture and several diagrams. It was published by audioXpress in March This article was published in audioXpress, May Quality Issues in Iron Core Coils.


The Audio Voice Newsletter. The Mastercrafters model “Fantasy” and the Haddon “South Wind” mystery clocks are described in this article.

Items tagged with: AES | audioXpress

There were no computers and no word processing programs. The photographer that Sonotone used for their advertising took the photos. A simple transistor circuit and lamp are connected at the power amplifier output. They are brand new high quality bulbs not the cheap junk from China.

Twenty 4-inch drivers provide high power handling and by putting them in the same long vertical column, outstanding coherence is heard.

Glass Audio Vault: The Remaking of a Champ

The mystery is how the hands are driven without any visible means. This project is based on a previous audioXpress article: The input and output jacks are at the right auddioxpress. It was literally cut and paste portions of the manuscript and adding or crossing out sections.

The power switch is at he left. The photo shows the rear of the expander-compressor. This article was originally published in audioXpress, September The ear is audixopress biological transducer transforming acoustical energy into mechanical energy and then to electrical pulses.

October 21, by Bruce W. The second part is about ear intricacies and how you hear. The units and values aydioxpress the measurements in mR are correct. A great tube-based amplifier for phono and line sources, featuring a very subtle bass enhancement control using negative feedback to enhance only selected frequencies, below Hz.

Several clocks made by Jefferson Electric have a patent number 2, on the clock. Your basket has been updated, what would you like to do now? After about seven go-arounds, it was ready to submit for publication. All of the coils were 5 mH for this article.


The unit was easy to install and adjust, and did all that could be expected. I gained feet of shelf space this way. In my photo on the right you can see one of the carriages and the fiberglass insulation on either side of the rails. Audio Amateur Inc is a niche publishing company that has been leading audjoxpress field as the authority on build-it-yourself audio for over 30 years. This article was originally published in audioXpress, May More of my uadioxpress articles will be added as they are published.

He wanted a versatile preamplifier that would work well in a variety of situations, and which could fit conveniently in a suitcase.

This is a very detailed two-part article auudioxpress how to evaluate speaker systems. Welcome to Hificollective, to create an account please register here. These are replacement light bulbs for the headlight switches pictured above. The average acoustic centers of the drivers in this three-way system are all aligned in the same audioxress plane. A speaker is in the background, but doesn’t show up in this image.

It works just as good today as it did back in The article was based on my test setup at McIntosh lab to select low distortion cores for our crossover coils.