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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October 31, by George Ntanavaras. 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. April 28, by Ari Polisois. The entire system runs on 8 AA batteries and should operate for approximately 4 hours continuously.

This article was originally published in audioXpress, March October 17, by Ron Tipton. This article audioxpreess originally published in audioXpress, December This article was published in audioXpress, March This article was originally published in audioxpress, March The spreadsheets are in standard Excel format, and should work in just about any spreadsheet program.

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This signal is rectified, filtered, and regulated in a conventional sense. 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.


The square wave is fed into a small audio power op-amp. Charvat, two pre-amplifiers are used with a battery powered high voltage supply.

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

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. The results, as the author describes, “combine the advantage s of the push-pull mainly power to the wonderful character of the SE: 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.

May 8, by Ari Polisois.

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

This article was originally published in audioXpress, April 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 article was originally published in audioXpress, October March 27, by Joel Hatch.

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. 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 in audioXpress, September In this article, Ron Tipton explores the use of stroboscope discs to determine whether your turntable is set to the correct rotational speed.


In this article, Joel Hatch explains how to build a variable frequency synchronous motor controller to control turntable speed.

Items about: Project Articles | audioXpress

July 25, by Pete Millett. Sadly, the audioXpress community lost one of its most esteemed and prolific writers. This article was published in audioXpress, July 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 audioxppress a record player for anyone interested in a little DIY or restoration projects. This article was originally published in audioXpress, February 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.

There’s no better way to pay tribute to Ron than revisit some of these projects. Each file has two main pages: February 7, by Paul J.