Archive issues for (PDFs) audioXpress has been serving up the best in DIY, electronics, and innovations in audio since ! With an increased focus on. Your one-stop shop to audioXpress and Circuit Cellar products. Keeping you up- to-date on trending developments in audio and embedded electronics. Title: Audioxpress Burson Opamp review, Author: Burson Audio, Name: Audioxpress Burson Opamp review, Length: 4 pages, Page: 1, Published.

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Please go audioxpreds www. 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.

ResCalca cool utility program you can download that calculates combinations of standard resistors to get a particular value. This is a depository for various audio designs and projects – mostly tube – that I’ve put in the public domain, as well as additional info to support magazine articles that I’ve written, and an ever-growing amount of technical data archives relating to vintage and tube audio.

All items in category Project Articles. For technical books, tube data, vintage data, transformer data, and McIntosh data, go to: When it came to selecting topologies for the balanced inputs and outputs, I ruled out transformers due to high cost, physical bulk, and weight. October 17, by Ron Tipton. I do some commercial audio design work outside of my “day job”. Muting relay PCB to eliminate the “thumps”. An isolated current sensor board to measure plate current using a PanelPilot meter.

I’m constantly adding and updating things, so come back every once in a while and see what’s new. 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.


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T-reg: A High-Voltage Regulator for Tube Amps

Please, if you send me e-mail, make sure that there is a logical “subject”, or your mail will get dumped along with all the junk mail spam that I get – it’s up to about junk e-mails per day now. I also have written articles for AudioXpress magazine formerly Glass Audio on occasion. If I don’t audioxprsss within a few days, try again, just in case I missed your message. We think that’s more to it. I developed the PSU, which, together with the sophisticated shunt, sets a new standard for audio voltage regulators.

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.

You can click here to see what I may be selling at the moment. A picture collection of interesting old QSL cards that I received in the early ‘s. I try and return everybody’s mail within a week, though I travel quite a lot for work and find I get very behind at times. March 27, by Joel Hatch. A high-end Tube Microphone Preamp.

I do sell things, including projects I no longer need, PC boards for my designs, and occasionally parts and tubes. Tube amp power supply PCB with bias supply. The DIY “Butte” solid-state headphone amp. April 28, by Ari Polisois. High-Gm driver pentode test data.

The results, as the author describes, “combine the advantage s of the push-pull mainly power to the wonderful character of the SE: I’ve been an electrical engineer for nearly thirty years, doing mostly computer and consumer electronics design work.

In ALL of these cases, I make no profit from any of the sales. There’s no guarantee that if you try and build anything like this stuff that you won’t electrocute yourself, the kids, or your cat, or burn your house down Push-pull 6B4G class-A amplifier.


The “Millett Hybrid” effort and others at HeadFi are examples and excellent models of how the DIY community should work, in my opinion. I recommend that if you don’t already have it you download the latest version of Adobe reader. The “Starving Student” hybrid headphone amplifier. This article was originally published in audioxpress, March I do this through eBay – I maintain an eBay store “pmillett”.

Follow the links below for detailed info Class-A2 amp using a power opamp driver. July 25, by Pete Millett.

Items tagged with: April | audioXpress

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. December 12, by Gary Galo. Software for the HP audio analyzer – Make professional plots from this affordable audio test system! Push-pull driver PCBa nearly universal driver for push-pull amps. April 19, by Paul Loewenstein. The “Engineer’s Amplifier”an affordable, high-performance push-pull TV pentode amp.

I try and help, but it sometimes takes me days – even weeks if I’m traveling for work – to respond. October 31, by George Ntanavaras.

The “Glowing Hybrid” amp. 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. A lifetime electronics geek, I got a ham radio license at the age of 8 and a first-class commercial radio license at