Enhancing Loudspeaker Efficiency and Bl(x) Symmetry with Virtual Voice Coil, Part 2

This is the second article detailing the design and simulation possibilities of the SpeakerLAB software and its Virtual Voice Coil (VVC) module for speaker designers. This simulation includes complete temperature management involved in loudspeaker calculus. The article also expands on audio transducer parameter prediction such as maximum SPL, analyzes key design components such as the magnetic circuit, and analyses the resulting simulated metrics that could help determine the highest efficiency.

Most of us assume that neodymium must only come from China. Yet, rare earth ore is available in California, and reshoring neo-magnet production, including recycling neodymium, is now accelerating in the US. Mike Klasco (Menlo Scientific), tipped off by Salvador Magdaleno (Salvador Consultant), writes about the first manufacturing operation that is ready to deliver neodymium permanent magnets in the United States. This article was written originally for The Audio Voice newsletter.

beyerdynamic updated its famous T 1 high-end headphones. Just in time for presentation at the IFA 2015 show in Berlin, the second-generation Tesla flagship headphones get a tuning resulting from modifications to the driver aiming to reduce undesirable vibrations and improve bass response. It also comes with a new textile-covered connection cable and case.