audioXpress Back Issues January “A Combination Horn You Can Build” “The Cathode Follower and Its Weaker Siblings” “Grounding and System. audioXpress Year Archive CD ( – ). Regular price $ USD Back Issues on CD – CC-Webshop. audioXpress Back Issues on CD. Find great deals for Audio Express AudioXpress Magazine October Hobby Audio Technology. Shop with confidence on eBay!.

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This article was originally published in audioXpress, April As Rick Spencer writes in its introduction, “In order for this beloved hobby of ours to thrive and survive well into the future, we must always strive to make it interesting to newcomers. It described the procedures on how to measure high compliance woofer characteristics and how audioxprrss select the appropriate cabinet size without the need for building a test cabinet. Erno Borbely shares with audkoxpress his all-FET audio amplifier design.

The input and output jacks are at the right side. Here is a top view of the stereo version showing the wiring.

These pages are copyrighted No portion of this site may be reproduced in whole or in auxioxpress without written permission of the author.

October 12, by George Ntanavaras. Published Articles by Roger Russell These pages are copyrighted No portion of this site may be reproduced audiox;ress whole or in part without written permission of the author. The ear is a biological transducer transforming acoustical energy into mechanical energy and then to electrical pulses.


Amplifier War and Peace – An Hybrid Amp | audioXpress

Well planned and constructed The high input impedance of the power transistor does not affect speaker performance when connected to the amplifier output terminals. July 26, by Robert Nance Dee. July 15, by Joseph Norwood Still. Ron Tipton was deeply impressed with this amplifier project which used only five transistors per channel, two of them being current audjoxpress.

Includes all new bulbs. All items in category Project Articles. This was my first magazine article.

Audio Express AudioXpress Magazine October 2007 Hobby Audio Technology

It’s also “sudden death” if you accidentally put your foot through the ceiling below. It works just as good today as it did back in The Dutch Secret may be the clock that inspired the president of Jefferson Electric to audioxprees the first of their audioxprews, the Golden Hour.

A simple transistor circuit and lamp are connected at the power amplifier output. The Audio Voice Newsletter. Audio Amateur Inc is a niche publishing company that has been leading the field as the authority on build-it-yourself audio for over 30 years.

More of my magazine articles will be added as they are published. Antique tube radios are some of the most coveted vintage electronics any audio enthusiast can acquire. He wanted a versatile preamplifier that would work well in a variety of situations, and which could fit conveniently in a suitcase.

After about seven go-arounds, it was ready to submit for publication. Need Help Contact Us. November 27, by Kirk Elliott. A history of radium and the paint manufacture is included with measurements of several radioactive sources.


This article was originally published in audioXpress, July A selection of issues from avaliable. Many people take the hearing process for granted and awareness of sound location and frequencies are only in the background of our attention.

In this high quality project, Robert Nance Dee designs a potentiometer for accuracy and flexibility. Room acoustics and preferred speaker response characteristics are also discussed. The photo shows the rear audioxrpess the audioxprses. This article was originally published in Glass Audio Volume 4, Number 2, In my photo on the right you can see one of the carriages and the fiberglass insulation on either audioxperss of the rails. Created by Roger Russell All rights reserved.

The speakers were made by Norelco and were commonly available at the time. The others are various iron core coils I purchased and tested for this article. In this article I offered to calibrate microphones that readers could send in so they could make relatively inexpensive measurements at home.

A revised version of the system includes more expensive drivers, smoother response, lower distortion, a protective network, angled cabinet sides and a grille. August 20, by Jenoe Keceli. This is a construction project. This article was originally published in audioXpress, May It was based on my work in designing the Sonotone RM speaker series using 4″, 6″ and 8′ woofers.