audioXpress February 5. With a simple connection, you can convert a full- wave bridge rectifier I-C (such as the Radio. Shack ). Archive issues for (PDFs) audioXpress has been serving up the best in DIY, electronics, and innovations in audio since ! With an increased focus on. audioXpress Issue May Click To Enlarge. Item #: AX-FI; Manufacturer: audioXpress. VOLUME NUMBER 4. May Tang Band Full -Range.

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This article was originally published in audioXpress, March This is not surprising.

April 28, by Ari Polisois. A pot with 64 levels and precision metal film resistors that 2100 hard to beat for sound or facility, as he describes it. This signal is rectified, filtered, and regulated in a conventional sense.

Charvat, two pre-amplifiers are used with a battery powered high voltage supply.

Getting the Most from THAT’s Balanced Line Drivers and Receivers

A PP 25L6 Amplifier In this classical tube amplifier project, author Bob McIntyre offers what is effectively the foundation for many designs that we can find currently in the market. July 25, by Pete Millett. This article was originally published in audioXpress, October The high voltage supply works by creating a square wave with a timer. In this article, Ron Tipton explores the use of stroboscope discs to determine whether your turntable is set to the correct rotational speed.

We think that’s more to it. Stamler A Power Supply Spreadsheet This article describes a spreadsheet program for designing low-voltage power supplies using common IC three-terminal regulators. This article was published in audioXpress, March The project started with a clean sheet, looking to address potentiometer design with a quality that rivaled existing designs while maintaining a reasonable cost. When it came to selecting topologies for the balanced inputs and outputs, I ruled out transformers due to high cost, physical bulk, and weight.

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The Audio Voice Newsletter. This article was published in audioXpress, April There’s no better way to pay tribute to Ron than revisit some of these projects.

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Each file has two main pages: This article was originally published in audioXpress, April This article was originally published in audioXpress, Audioxprress The Mighty Mouse is indeed a good sounding and inexpensive project that is also a good introduction to tube amplification.

March 27, by Joel Hatch. This article was published in audioXpress, July This article by Ron Tipton details the design and construction of the TDL Model high-performance microphone preamp, using a differential input stage that used compound transistor pairs with circuit resistance values, computer optimized for very low output noise. This is auduoxpress project that quickly became the focus in lots of tube-oriented forums and has inspired long threads and many iterations, including further articles published in audioXpress from the author 20010.

This simple single-ended amp project by Pete Millett is a great performer and a very well documented project that was immediately adopted by many DIY’er’s.

This article was originally published in audioXpress, September This article was originally published in audioXpress, June The output of this op-amp is back-fed into the secondary of an audio output transformer, generating high voltage AC V at 40 kHz. May 8, by Ari Polisois.

The entire system runs on 8 AA batteries and should operate for akdioxpress 4 hours continuously. April 19, by Paul Loewenstein. In this article, Joel Hatch explains how to build a variable frequency synchronous motor controller to control turntable speed. Sadly, the audioXpress community lost one of its most esteemed and prolific writers. The square wave is fed into a small audio power op-amp. October 17, by Ron Tipton. I completed the design and construction of an archival phono preamplifier, which provides variable equalization along with audioxprezs other operational necessities for playing vintage records rpm discs, pre-RIAA LPs, lacquer transcription discs, and so on.

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In this project article for audioXpress, George Ntanavaras describes the design and construction of a high-quality RIAA preamplifier for moving coil cartridges based on high-quality Analog Device AD op-amps designed for low-noise audio applications and driven from very low source impedance.

March 21, by Ron Tipton. December 13, by Wudioxpress L. The spreadsheets are in standard Excel format, and should work in just about any spreadsheet program.

This article was originally published in audioxpress, March The author describes a microphone amplifier designed to audioxpres a standard dynamic microphone to a soundcard or other computer microphone input with a 5V through 2.

February 7, by Paul J. The results, as the author describes, “combine the advantage s of the push-pull mainly power to audloxpress wonderful character of the SE: Apart from looking at some commercially available stroboscope discs, Ron Tipton explains how to print one from files that are freely available on the Internet, and explains how to build your own multiple-LED lamp to check the rotations.

This article was originally published auioxpress audioXpress, December December 12, by Gary Galo. This article from respected author Ari Polisois deals with a single-ended amplifier with enough power to drive even the most difficult speaker systems – delivering 50W per channel. All items in category Project Articles. I developed the PSU, which, together with the sophisticated shunt, sets a new standard for audio voltage regulators.

Following the publication 2100 its original SE 6C33C amplifier in audioXpress JulyAri Polisois returned with more information on how to further simplify the whole construction and reduce the costs.