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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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AudioXpress interview

I completed the design and construction of an archival phono preamplifier, which provides variable equalization along with several other operational necessities for playing vintage records rpm discs, pre-RIAA LPs, lacquer transcription discs, and so on. April 19, by Paul Loewenstein. Following the publication of 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.

The results, as the author describes, “combine the advantage s of the push-pull mainly power to the wonderful character of the SE: In this article, Ron Tipton explores the use of stroboscope discs to determine whether your turntable is set to the correct rotational speed.

This article was originally published in audioXpress, December We think that’s more to it. This is a 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 himself. ajdioxpress


This article was published in audioXpress, March The square wave is fed into a small audio power op-amp. July 25, by Pete Millett. March 21, by Ron Tipton. 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.

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.

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March 27, by Joel Hatch. The Mighty Mouse is indeed a good sounding and inexpensive project that is also a good introduction to tube amplification. The entire system runs on 8 AA batteries and should operate for approximately 4 hours continuously.

April 28, by Ari Polisois. This article was originally published in audioXpress, June February 7, by Paul J. Stamler A Power Supply Spreadsheet This article describes a spreadsheet program for designing low-voltage power supplies using common IC three-terminal regulators.

October 31, by George Ntanavaras. May 8, by Ari Polisois. This article was originally published in audioXpress, October December 12, by Gary Galo.

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October 17, by Ron Tipton. This article was published in audioXpress, July This article was published in audioXpress, April This signal is rectified, filtered, and regulated in a conventional sense. In this article, Joel Hatch explains how to build a variable frequency synchronous motor controller to control turntable speed. Charvat, two pre-amplifiers are used with a battery powered high voltage supply. This article was originally published in audioXpress, March 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 aurioxpress check the rotations.

audioXpress Archive Select page | audioXpress

The spreadsheets are in standard Excel format, and should work in just about any spreadsheet program. Each file has two main pages: This is not surprising. This article was originally published in audioXpress, February The project started with a clean sheet, looking to address potentiometer design with a quality that rivaled existing designs while maintaining a reasonable cost.

I developed the PSU, which, together with the sophisticated shunt, sets a new standard for audio voltage regulators.