Magnets and Smart Electronics for Speakers in Voice Coil September 2023

This issue of Voice Coil is packed full of great knowledge for speaker professionals. The September 2023 issue features three Test Bench characterizations: the Fountek NeoCD2.0 Ribbon Tweeter, the SB Acoustics WO24TX-4 Satori midbass, and the SEAS L22ROY2 8" subwoofer. This issue also features our annual overview of Magnetic Materials for the Loudspeaker Industry. Peter Larsen (Loudsoft) concludes his FINE Circle tutorial with a passive crossover for his design. This issue of Voice Coil is now available in print, online, and in digital formats.

Powercast Corporation, a company specializing in radio-frequency (RF)-based over-the-air wireless power technology, has unveiled its Ubiquity ultra-low-cost RF power transmitter, which was selected as a CES 2023 Innovation Award Honoree in the Smart Home, Embedded Technologies, and Sustainability, Eco-Design & Smart Energy categories.

Energous Corporation, a leading developer of RF-based charging for wireless power networks, applauded the International Telecommunication Union (ITU) Recommendation ITU-R SM.2151-0, which includes an approval and recommendation for the 900 MHz frequency band for wireless power transfer for the wireless charging of devices such as sensors, smart tags, asset trackers and other connected applications. Energous helped lead the process to develop the global recommendation, representing a significant step forward for wireless power delivery.