Plastic Speaker Cone History

Mike Klasco explains the evolution of speaker cone materials, from paper to the first experiments in plastics and finally to Polypropylene (PP), which became the preferred resin sheet material for thermoformed speaker cones. The article also discusses recent trends in woven composite cone fabrication. This article was published in Voice Coil, February 2014.

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.

The February 2015 edition of Voice Coil is already available and features our annual Loudspeaker Cone Vendor Survey 2015. James Croft’s Acoustic Patents reviews recent inventions from Libratone (Denmark) and Genelec (Finland). Vance Dickason’s Test Bench focuses on a 6.5” pro sound midrange driver, from PRV Audio Brazil and the reissue of the famous G12H “GreenBack” 12” guitar speaker by Celestion. Mike Klasco writes about the Endumax cone material by Teijin Aramid.