Better Speaker Measurements with Voice Coil November 2019 Now Available 

November 2019 marks Voice Coil’s 33rd year as an information resource for the loudspeaker industry. For this edition, Mike Klasco focuses on "Measurement Microphones: Today and Tomorrow," while Nora Wong provides another valuable updated directory of Test & Measurement Microphone manufacturers and suppliers. James Croft reviews a new coaxial loudspeaker assembly patent granted to Tymphany, while Vance Dickason characterizes the DMA80-4, a 3" full-range speaker from Dayton Audio, and the AUGDL0003-JN03, a 1” magnesium-lithium alloy dome tweeter from Eastech’s Punktkilde line.

The November 2019 edition of audioXpress is now available with a wide range of technical topics in audio electronics and design. We review the Benchmark LA4 Line Amplifier and the new Hooke Verse Bluetooth Binaural Recording Headphones. Jan Didden proposes an updated version of his High-Voltage Delay for Tube Amplifiers, and Thomas Zarbo, Jr. explains how to build his Tenacious Bass-8 Powered Subwoofer. And, learn more about Data-Over-Sound, MU amplification topologies, and Auverdion’s Aurora open-source DSP platform. Now available!

The October 2019 edition of Voice Coil is packed full of essential reading material. Vance Dickason discusses Zero Phase in Studio Monitors with commentary from industry experts. In Acoustic Patents, a new Speaker Structure design patented by Yamaha, and a new Passive Acoustic Radiator Module, invented by Joseph Sahyoun are under review. And Test Bench characterizes a new high power coaxial compression driver and horn from B&C Speakers, and a 28 mm silk dome tweeter from Trueanalog. Now available to download!

The October 2019 edition of audioXpress closely reflects the highly diverse and exciting areas of innovation in the audio industry. There’s a Market Update on Audio Installation, one of the highest growth and most innovative segments in the audio industry, and our report of the 2019 Midwest Audiofest Speaker Design Competition, followed by a review of Bob Cordell’s 2nd Edition book on Designing Audio Power Amplifiers, and an important insight on modern Class-D amplification. We also review the DPA d:vice MMA-A Digital Audio Interface, explain the potential of true 6DoF (six degrees of freedom) audio experiences, how Auralization allows building virtual acoustic models, and so much more!

Heading for the 2019 CEDIA Expo, where the Voice Coil team will be in full force, the September 2019 edition features an interesting overview of a new Multi-Driver Loudspeaker with Cross-Coupled Dual Wave-Columns patent, recently sold to Dolby Labs, and a close look at previous tapped wave-column design efforts. In Test Bench, Vance Dickason characterizes the new PD.124NR1 12” neodymium midbass driver from Precision Devices and from Eastech’s Punktkilde line, the FSA044010-0802, a 1” titanium dome tweeter. Voice Coil September 2019 is now available for download, together with all the industry news and updates.

The September edition of audioXpress is our always popular Speaker Builder - Speaker Focus edition. Once again, audioXpress focuses on loudspeaker building, design, and testing and for this issue we have combined two great DIY articles with a review of the PureAudioProject Trio15 Heil AMT speaker system. Ward Maas reports from the High End 2019 show in Munich, Jan Didden met with Purifi Audio's Bruno Putzeys and Lars Risbo and comments on the company's research, and much more.

Voice Coil August 2019 is now ready for you to download and it is in the mail for print subscribers. In this month’s edition, don’t miss the ALMA International Symposium & Expo (AISE) 2019 report, and the valuable Global Voice Coil Manufacturers 2019 updated directory. In Acoustic Patents, James Croft takes a closer look at two automotive patents granted to Harman and Bose. And Vance Dickason characterizes two different woofers from the new SEAS Excel Graphene product line. Download your copy now!

The August 2019 edition of audioXpress features the latest Acoustical Solutions product round-up, and several contributed articles on acoustic-related topics, including, evaluating auditorium acoustics, measuring unwanted vibrations, and frequency timing. This edition also includes Stuart Yaniger's review of the Kali Audio LP-6 Powered Studio Monitors, Ken Bird's assembly-review of the Swans Speakers DIY Kits, and Oliver A. Masciarotte's report from AXPONA 2019. Now available for download and in print!

The July 2019 edition of Voice Coil is now available and loaded with valuable articles, starting with an overview of the new Klippel Controlled Sound (KCS) technology, followed by a detailed article on headphone measurement, and a new backward concept for designing vented enclosures. The July edition also features an updated directory of Adhesives, Coatings, Sealant, and Dispenser Providers. In Test Bench, Vance Dickason characterizes a Faital Pro midrange woofer and a coaxial driver from Tang Band (TB) Speaker. Download your copy now!

For our July 2019 edition, audioXpress focused on audio amplification technologies and platforms, including a Market Update on Audio Amplifiers. Eric Eklund writes about Smart Power Audio Amplifiers for Smartphones, and Ward Maas discusses Powersoft's OEM amplifier modules. Read the reviews on the Dayton Audio HTA20BT Hybrid Stereo Tube Amplifier, and on Sonarworks’ True-Fi Software, learn about control and monitoring user interfaces for AoIP, and much more. Download your edition now!