Errata, Corrections, & Updates

When necessary, audioXpress and Voice Coil staff posts notes pertaining to errata, corrections, and updates on this page.

A long-standing tradition, audioXpress' Focus on Test and Measurement 2017 is now available. Start with a thorough review of Audio Precision’s new APx1701 Transducer Interface; explore the DIM-100 device for interfacing and measuring with sound cards; build an Audio Dummy Load; learn how to measure Harmonic Distortion and discover the effects of Community Noise and their measurements. And just how good TIDAL's streaming quality actually is? All that and more in audioXpress March 2017. Get your copy now.

In audioXpress' November 2015 Sound Control column, Richard Honeycutt, addressed the topic of Smartphone Apps for Sound Measurement. Touching on the challenges and benefits of the smartphone approach as a mobile test and measurement device, as well as reviewing available apps for iOS (Apple), Android, and Microsoft Windows, this an article that needs to be broadly shared while it is still up to date. Read the full article now available online.

audioXpress February 2017 is one of those issues to read and keep on hand. Learn about Bluetooth 5 and how the new specification promises to positively change wireless audio applications, how to extract multichannel audio from the latest-generation Apple TV, and how to use an oscilloscope to troubleshoot tube circuits. Read reviews of the Vienna Suite Pro processing audio plug-ins and the Primacoustic London 12 acoustic panels kit. Learn how Tom Perazella built its subwoofer with an Ultimax 18” driver from Dayton Audio and how Addie and Whisker built a preamp for high-impedance sources from vintage components, and much more.

audioXpress January 2017 is now available. This month, we review Kii Audio’s new Kii Three speakers, and report on the most interesting new products at The Rocky Mountain Audio Fest (RMAF) 2016. We explore Near Field Magnetic Induction (NFMI) wireless audio applications, and the new USB Audio Device Class 3.0 specification for USB Type-C. We discuss streaming DSD over the Internet, revisit the Helmholtz resonator, explain how to build a Low-Power, Class-A Power Amplifier, and interview Michael Carnes of Exponential Audio. There is a lot to read inside this issue!

audioXpress December 2016 is now ready to download. Our Standards Review article explains the fundamentals of the USB 3.1, USB Type-C, and Thunderbolt 3 specifications. We review four measurement microphones from PCB Piezotronics, the Mytek Digital Brooklyn DAC, the new miniDSP DDRC-24 processor, and we feature a Retro-Style High-Fidelity Preamplifier for DIY enthusiasts. This is an issue no one will want to miss.

November 2016 marks the beginning of Voice Coil’s 30th year and this issue celebrates it accordingly! The November 2016 issue is filled with great articles including a Spotlight by Mike Klasco on MEMS Microphones, and an extensive directory of Mic Capsule Vendors. In this month’s Acoustic Patents, James Croft reviews two different patents, which apparently should have been scrutinized by industry experts - and weren’t. While this month’s Test Bench features new drivers from two of the premier Italian Pro Sound OEM manufacturers, Faital Pro and B&C Speakers.

Get hands-on with audioXpress November 2016. Read about the experience of recording a jazz repertoire with a full orchestra… direct-to-disk. We review KEMET’s PEG124 Series of electrolytic capacitors and the Dirac Live room correction software. Bruce Brown details the restoration of a pair of Fairchild 275 tube amps. We interview Dennis Foley from Acoustic Fields and we provide backstage access to Parts Express.

audioXpress October 2016 is now available online and features two exciting reviews—one on the Bricasti Design M1 Dual Mono DAC - Deluxe Limited Edition and the other on the XiVero MusicScope file analysis software. We also report on this year’s 2016 Midwest Audiofest Speaker Design competition; Christopher Paul shares his Regulated Filament Supply project; and we talk about microphones with Matthew McGlynn, owner of Microphone-Parts. This and much more to read. Download your edition now.

It’s that time of the year again. September means our Speaker Focus edition is here and once again we have a powerful selection of articles, starting with a great recap from Mike Klasco on the Evolution of Compact Deep Bass Subwoofers. We follow with three great DIY articles from Ward Maas, Ken Bird, and Perry Marshall. Of course, there’s also the second part of Richard K. Mains’ techniques on how to eliminate room reflections in woofer measurements, and a great interview with David MacPherson, owner of Studio Electric. Read on!