Sony Corporation Global Headquarters
Several industry leading eco-conscious Sony products are showcased here, including examples of product-based initiatives from the four Road to Zero environmental Perspectives.
This home theater system features an innovative Sony technology —magnetic fluid speakers. Learn how the advanced speakers offer exceptional benefits in environmental performance.
Originally developed through the NASA space program in the 1960s, magnetic fluid is a liquid with magnetic properties.
Sony has now pioneered its use in mass-produced full-range speakers, where it offers a few distinct environmental advantages.
Sony has succeeded in adopting magnetic fluid in mass-produced full-range speakers— world first
In conventional speakers, dampers provide suspension for voice coils, which move up and down. For some time Sony had studied magnetic fluid as a viable means of suspension promising much better speaker efficiency. Finally in 2012, Sony R&D led to the first fluid suspension for mass-produced full-range speakers, enabling damperless speakers. Eliminating dampers can boost energy efficiency significantly, and Sony speakers with fluid suspension consume about 35% less energy than regular speakers, at a volume of 2 dB.
*Energy consumption of magnetic fluid speakers alone, compared to that of regular speakers at equivalent volume
Replacing dampers with fluid suspension lightens the vibration system and enhances drive, reducing energy consumption by 35%.
Fluid suspension also improves sound quality considerably. In conventional speakers, diaphragms are suspended on dampers which generate secondary sound pressure that may cause distortion. This sound pressure is not generated by a damperless, fluid suspension. Additionally, the pathway from the voice coil to the diaphragm can be shortened, which helps minimize transmission loss. As a result, these speakers offer clear, extended mids and highs.
In these illustrations, audio distortion is represented visually. Distortion is reduced in speakers with fluid suspension.
BDV-N790W was awarded the CES 2013 Innovation Awards in the Eco-Design category.
Employing energy efficient magnetic fluid speaker technology is highly appreciated.
This Blu-ray home theater system features a wireless rear speaker that allows for unlimited placement options, immersive 3D and 2D Blu-ray™ playback in Full 1080p HD, and innovative Magnetic fluid speakers that deliver virtually flawless, distortion-free sound.
