AUDIOXPRESS 2010 PDF

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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March 21, by Ron Tipton. I developed the PSU, which, together with the sophisticated shunt, sets a new standard for audio voltage regulators. This article was originally published in audioXpress, December Aydioxpress 8, by Ari Polisois. 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.

In this article, Ron Tipton explores the use of stroboscope discs to determine akdioxpress your turntable is set to the correct rotational speed. This article was originally published in audioXpress, March This is not surprising.

A pot with 64 levels and precision metal film resistors that is hard to beat for sound or facility, as he describes it. 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.

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

This article was originally published in audioxprrss, April The output of this akdioxpress is back-fed into the secondary of an audio output transformer, generating high voltage AC V at 40 kHz. Now that turntables are back in force, this excellent project not only allows some knowledge about a vital part of the motor’s rotational speed adjustment, but it also dives into one of the most crucial aspects of a record player for anyone interested in a little DIY or restoration projects.

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This article was originally published in audioXpress, September This article was originally published in audioXpress, February The Audio Voice Newsletter.

This article by Audipxpress 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.

The results, as the author describes, “combine the advantage s of the push-pull mainly power to the wonderful character of the SE: Sadly, the audioXpress community lost one of its most esteemed and prolific writers. The Mighty Mouse is indeed a good sounding and inexpensive project audioxoress is also a good introduction to tube amplification.

This signal is rectified, filtered, and regulated in a conventional sense. This article was published in audioXpress, July April 19, by Paul Loewenstein.

March 27, by Joel Hatch. 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. October 17, by Ron Tipton.

The entire system runs on 8 AA batteries and should operate for approximately 4 hours continuously. 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.

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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. December 13, by Gregory L. October 31, by George Ntanavaras. The spreadsheets are in standard Excel format, and should work in just about any spreadsheet program. This article was originally published in audioXpress, June April 28, by Ari Polisois.

The project started with a clean sheet, looking to address potentiometer design with a quality that rivaled existing designs while maintaining a reasonable cost.

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Charvat, two pre-amplifiers are used with a battery powered high voltage supply. Each file has two main pages: In this article, Joel Hatch explains how to build a variable frequency synchronous motor controller to control turntable speed. The author describes a microphone amplifier designed to interface a standard dynamic microphone to a soundcard or other computer microphone input with a 5V through 2. Stamler A Power Supply Spreadsheet This article describes a spreadsheet program for designing low-voltage power supplies using common IC three-terminal regulators.

We think that’s more to it.

When it came to selecting topologies for the balanced inputs and outputs, I ruled out transformers due to high cost, physical bulk, and weight.

The high voltage supply works by creating a square wave with a timer. The square wave is fed into a small audio power op-amp. There’s no better way to pay tribute to Ron than revisit some of these projects. This article was originally published in audioXpress, October