New Approaches to Speaker Optimization in audioXpress December 2021

audioXpress December 2021 is now available. Learn how Room Correction and Speaker Calibration is influencing efforts towards the Self-Calibrating Loudspeaker, Dirac's take on Spatial Room Correction Technology, and how to Measure Directivity of In-Wall Loudspeakers. Richard Modafferi describes his unique crossover design build, Frans de Wit talks about DC Power Supplies, Morty Tarr discusses important aspects of amplifier design, and Michel Nieuwenhuizen offers an Arduino-based motor control for turntables. Start reading online or in print.

During a special event promoted to announce a new generation of Amazon Alexa products, technologies and solutions, Amazon introduced an all-new line-up of Echo devices to expand its Alexa voice assistant ecosystem in the home and now also on-the-go. The all-new Echo Buds, using ANC technology licensed from Bose, join the Echo Auto as another option to take Alexa outside the home. The new Echo speakers also include the Echo Studio, engineered in collaboration with Dolby and supporting HRA and immersive audio reproduction.

Paradigm and Anthem will offer demonstrations of its Persona Series loudspeakers and Anthem STR electronics during the 2019 Rocky Mountain Audio Fest (RMAF). Persona Series speakers and STR Series electronics have received a total of twelve prestigious Product of the Year awards from all the major hifi publications. Paradigm will demonstrate its latest flagship Persona 7F speakers and Persona SUB subwoofer alongside Anthem's critically acclaimed STR Preamplifier and STR Power Amplifier.