audioXpress - March 2020

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8 Finding the Right Solution In this annual Market Update on Test and Measurement, we decided to highlight the latest solutions that are available to the audio industry, including updates to some of the most established measurement toolkits. 20 Dayton Audio Test System (DATS) V3 - Rise of the Ultra-Portable Woofer Tester After a decade of widespread use, the Dayton Audio Test System (DATS) has acquired an impressive reputation for fast and accurate testing. Now, Dayton Audio has taken the audio test system and improved it in almost every way. David Logvin reviews the latest iteration for audioXpress. 28 Strategies for Optimizing Audio Production Tests This article focuses on several key challenges found in the production and manufacturing test of audio products, and shares strategies for optimizing the measurement system to address said challenges. 34 Miking Choirs with Orchestras or Organ 38 FDA Errors to Consider Driving Audio ADCs and Active Filter Design Options 42 Audeze Mobius Headphones Reviewed High-end planar magnetic headphone manufacturer Audeze breaks out of the mold with the Mobius: a wireless Bluetooth headphone capable of LDAC high-resolution playback, virtualized surround sound, and a number of surprises Audeze continues to invent. We explore what this headphone can do, the use-cases for its unique features, and the limitations of this boldly conceived product. 56 Powering Your Circuits (Part 2) - AC Power Supplies After reviewing battery power in Part 1, Ed now tackles all aspects in AC power supplies, starting with transformers.