Key Loudspeaker Updates for the Industry in Voice Coil October 2022

In this edition of Voice Coil, Mike Klasco writes about Dr. Kurt Müller's 100-Year Anniversary, Mike Klasco and Nora Wong compiled an updated Integrated Electronics for Loudspeakers directory, and James Croft reviews an intriguing patent of a Vertically and Horizontally Balanced Subwoofer. For this issue's Test Bench, Vance Dickason focused his full attention on another innovative driver from Purifi Audio, this time the PTT5.25X04-NFA-01 5.25” Midbass Woofer.

An overview of Loudsoft's latest FINE Suspension Nonlinear FEA Spider and Surround Design software. This new transducer engineering tool, specific to the development of speaker surrounds and spiders (dampers), allows for the simulation of different types of surrounds and spiders from imported DFX files or created from templates with parameters selected by the user, and then outputs the compliance curves similar to the Kms and Cms curves measured by Klippel DA2 or KA3 analyzers.

Endumax, an innovative and superior cone material with performance beyond woven composites, has only recently been introduced to the industry. From a speaker designer’s perspective, it is possible for extremely wide cone body angles (shallow cone), smaller voice coil diameters, and/or smaller magnetic systems to achieve comparable or superior results to existing speaker cone solutions. This article was originally published in Voice Coil, February 2015.