Home  Hi-Fi Audio Reviews  Audiophile Shows Partner Mags  News       

  High-End High-Performance Audiophile Review Magazine & Hi-Fi Audio Equipment Reviews

  High-Performance Audio Reviews
  Music News, Show Reports, And More!

  Celebrating 29 Years Of Service To Music Lovers

Enjoy the Music.com

audioXpress Magazine

audioXpress Magazine      October 2021


audioXpress Magazine October 2021


  audioXpress remains the authority on audio and reproduced sound by connecting manufacturers and distributors with developers, buyers and consultants around the globe! It's readers are the audio product designers, consultants, integrators, DIY enthusiasts, opinion leaders and your best customers. All of them agree that the coverage of trending topics, unique in the audio industry, make audioXpress a must read.

Every month, audioXpress combines the best educational articles on topic such audio electronics, speaker and headphone design, amplifiers (from tube to Class D), acoustics, practical test and measurement, audio engineering praxis, and standards. audioXpress provides inside stories on new audio developments, on R&D Stories, the most complete objective reviews of innovative products and software, and selects some of the best DIY audio projects from worldwide experts.



From The Editor's Desk
4 Home Theater And Home Entertainment
This issue has a balanced mix of content addressing
audio electronics knowledge, technology reviews and more.
Editorial By J. Martins


5 Client Index



8 USound Megaclite 4.0 UH-R2040 MEMS Earphones
By Brent Butterworth
The Megaclite 4.0 UH-R2040 is a reference design
intended to prove that MEMS drivers can work well in
a standard earphone design. Brent Butterworth listens
and measures to see if this new technology from
USound is ready for the market.


28 The Complete Linear Audio Library On USB
Reviews by Gary Galo, Bob Cordell, and Dimitri Danyuk
Linear Audio, the bookzine created in 2010 by Jan
Didden, is now available on a USB with The Complete
Linear Audio Library. We asked three Linear Audio
and audioXpress authors to review it and share their


38 Ultra-Linear: Why It Works And When It Will Not (Part 1)
The Fundamental Questions
By Morgan Jones
This article reviews the story and the principles of
ultra-linear electronic circuits, looking in detail at
several tube types. This article is the first in a two part
series in which Morgan Jones not only shows how
ultra-linear works, but more importantly, predicts
when it won't.


44 Cascodes, Folded Cascodes, And Current Mirrors (Part 1)
Cascodes And Folded Cascodes
By Morty Tarr
Cascodes, folded cascodes, and current mirrors are
circuit topologies that are used to provide specific
functions for an amplifier design. These topologies
improve the performance of the devices, but also
add complications. In this first article, the author
discusses cascodes and folded cascodes.


50 Refurbishing Altec Lansing Vintage Speakers
By Bruce Heran
This article showcases how refurbishing these
highly coveted speakers continues to be a rewarding


56 The Tetrahedral Test Chamber Story (Part 2)
Consistent Loudspeaker Measurements
By Geoff Hill
In Part 2 of his article, Geoff Hill describes the initial
launch and refinement phase of his Tetrahedral Test
Chamber (TTC), proving the chamber's measurement
repeatability, and detailing its inclusion in the
international standards.


audioXpress Magazine October 2021


Market Update Home Theater
14 Raising The Bar On Residential Entertainment
By J. Martins
This article focuses on home theater and residential
installation technology and solutions, with the goal to
project the market trends going forward. It addresses both
the products that appeal directly to the consumer, and
installation-oriented solutions for home entertainment.



Sound Control
32 A Tale Of Speakers In A Room
By Richard Honeycutt
Richard Honeycutt shows us why understanding the
strengths and weaknesses of different speaker designs
and modeling/comparing the best candidates will
ultimately lead to the best results for any space.



Hollow-State Electronics
60 Effects Of Negative Feedback
By Richard Honeycutt
In this Hollow-State Electronics article, Richard Honeycutt
uses LTSpice modeling to determine how different amounts
of negative feedback affect the output from a hollow-state
power amplifier.




Subscribe To audioXpress Magazine

Subscribe To audioXpress Magazine
Click here to subscribe to audioXpress magazine.




Previous Issues

January   February   March   April   May   June   July

August   September   October


July   August   September   October   November   December


















































Quick Links

Premium Audio Review Magazine
High-End Audiophile Equipment Reviews


Equipment Review Archives
Turntables, Cartridges, Etc
Digital Source
Do It Yourself (DIY)
Cables, Wires, Etc
Loudspeakers/ Monitors
Headphones, IEMs, Tweaks, Etc
Superior Audio Gear Reviews



Show Reports
HIGH END Munich 2024
AXPONA 2024 Show Report
Montreal Audiofest 2024 Report

Southwest Audio Fest 2024
Florida Intl. Audio Expo 2024
Capital Audiofest 2023 Report
Toronto Audiofest 2023 Report
UK Audio Show 2023 Report
Pacific Audio Fest 2023 Report
T.H.E. Show 2023 Report
Australian Hi-Fi Show 2023 Report
...More Show Reports


Our Featured Videos


Industry & Music News

High-Performance Audio & Music News


Partner Print Magazines
Australian Hi-Fi Magazine
hi-fi+ Magazine
Sound Practices
VALVE Magazine


For The Press & Industry
About Us
Press Releases
Official Site Graphics





Home   |   Hi-Fi Audio Reviews   |   News   |   Press Releases   |   About Us   |   Contact Us


All contents copyright  1995 - 2024  Enjoy the Music.com
May not be copied or reproduced without permission.  All rights reserved.