All items tagged with Tom Perazella (21)

2019 Midwest Audiofest Speaker Design Competition

November 21, 2019 by Thomas Perazella

2019 Midwest Audiofest Speaker Design Competition

One of the most important audio events for the speaker building and DIY audio communities, the Midwest Audiofest (MWAF) is held in Springboro, OH, in July every year. Sponsored by an impressive group of vendors and hosted by Parts Express, this event combines several activities including a huge tent sale at Parts Express. For Thomas Perazella the highlight of the event is the Speaker Design Competition, for which he was again one of the competition judges. This article was originally published in audioXpress, October 2019.

Preserving Precious Sounds with audioXpress November 2018

October 9, 2018 by audioXpress Staff

Preserving Precious Sounds with audioXpress November 2018

In this edition, audioXpress pays tribute to one of its most esteemed and prolific writers, Ron Tipton (1936–2018). In our cover feature, Scott Dorsey details his fascinating visit to the Library of Congress National Audio-Visual Conservation Center. Tom Perazella concludes the construction of his flagship Egg Speakers, Andy Lewis explains more about Back EMF, Peter Lehmann shares his time-alignment design for a two-way speaker, and Ethan Winer shares his experience with the affordable LabNation SmartScope USB oscilloscope. And that's just the start of another great edition, now available in print and online.

Learn, Plan, and Build with audioXpress October 2018

September 11, 2018 by audioXpress Staff

Learn, Plan, and Build with audioXpress October 2018

Another edition of audioXpress is now available, and this is another one of those issues you don't want to miss. On our cover, we call your attention to Tom Perazella's amazing Egg Speakers, a project which we continue to detail this month. Next, Stuart Yaniger reviews the latest Phantom Power Microphones from PCB Piezotronics, we discuss advanced test methods for improving Active Noise Cancellation headphone performance, and we interview Michael Goodman, CEntrance Founder and CEO. And there's more speaker projects, and great audio theory articles. Download it now or subscribe!

True Bass in a Large Space: A Pro DIY Subwoofer Project from 1975!

February 14, 2018 by Don Keele Jr

True Bass in a Large Space: A Pro DIY Subwoofer Project from 1975!

Part of audioXpress Speaker Focus edition in September 2017, this article by Don Keele, Jr. reminds us of how things evolved in speaker design, revisiting a subwoofer project that uses an Electro-Voice 30W 30" woofer from 1975! In "True Bass in a Large Space," Keele writes, "Getting true bass in a small place is quite easy and straightforward today, but back in 1975, it was not!"

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A Bold Speaker Project by Tom Perazella

December 9, 2017 by Joao Martins

A Bold Speaker Project by Tom Perazella

In May 2016, following the Munich High End show, audioXpress published a short article preview of SB Acoustics' highly anticipated new drivers, including the brand's flagship TW29BN high-end beryllium dome tweeter, part of its Satori top performing range. The new drivers, also included new midrange and midwoofer drivers using new proprietary cones made with Egyptian papyrus fibers, available in 5" to 9.5" sizes. Thomas Perazella, an esteemed frequent contributor to audioXpress, had an idea for a new speaker project using those drivers!

Ideas, Focus, and Innovation, Available with audioXpress November 2017

October 10, 2017 by audioXpress Staff

Ideas, Focus, and Innovation, Available with audioXpress November 2017

Discover some outstanding speaker designs in the Midwest Audiofest 2017 Speaker Competition with audioXpress November 2017. In this edition, audioXpress also features one of the most eagerly awaited reviews: the OPPO Digital UDP-205 4K Ultra HD Audiophile Blu-ray Disc Player. Focusing on audio processing, we discuss active noise control for headphones, and we address "Measurement of Audio Devices" that use automatic gain control (AGC). In our "You Can DIY!" article, Dan Joffe describes a 1 kHz oscillator with less than 2 PPM distortion. And much more...

Midwest AudioFest 2017 and DIY Speaker Design Competition Returns July 14-15

May 22, 2017 by Vance Dickason

Midwest AudioFest 2017 and DIY Speaker Design Competition Returns July 14-15

Parts Express will hold its annual Midwest AudioFest from July 14–15, 2017 at Parts Express’ headquarters in Springboro (Dayton), OH. The event includes the Parts Express Warehouse Tent Sale, an Audio Swap Meet, a Mobile Electronics Competition Association (MECA) sponsored Auto Sound Competition, and the highlight of the event — the DIY Speaker Design Competition.

Tune-up Your Listening with audioXpress June 2017

May 10, 2017 by audioXpress Staff

Tune-up Your Listening with audioXpress June 2017

If you have a passion for high-quality audio experiences you know this is a continuous learning process. In audioXpress June 2017, you will learn more about binaural recording, how you can tune your listening to your own hearing when using earphones and headphones, and we explain how to assess audio quality in any acoustical environment with the MATT Test. That and much more is now available in audioXpress June 2017.

On Angel’s Wings, Part 2 - A Speaker Design for the Bohlender Graebener RD-75 Planar Magnetic Driver

February 23, 2016 by Thomas Perazella

On Angel’s Wings, Part 2 - A Speaker Design for the Bohlender Graebener RD-75 Planar Magnetic Driver

In January and February 2001, audioXPress included a project from Thomas Perazella, describing in detail the design and construction of a speaker using the Bohlender Graebener RD-75 planar magnetic driver. This is the second part of the project, detailing the final part of the speaker construction, measurements and listening trials.

On Angel’s Wings, Part 1 - A Speaker Design for the Bohlender Graebener RD-75 Planar Magnetic Driver

February 18, 2016 by Thomas Perazella

On Angel’s Wings, Part 1 - A Speaker Design for the Bohlender Graebener RD-75 Planar Magnetic Driver

In January 2001, the first audioXPress magazine issue (Vol. 32 No.1) included this project from Thomas Perazella. Published in two parts, the articles described in detail the design and construction of a speaker using the Bohlender Graebener RD-75 planar magnetic driver, including references to previous experiments with dipole baffles. This is the first part of the project.

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