Sony MDR-Z1000 User Manual download pdf (Page 6)

1. Introduction

This device is designed to fulfill the high demands of functionality and performance required in a real

professional production environment. In order to thoroughly reproduce accurate sound and to provide

the acoustic isolation necessary for professional studio usage and actualize these features at a high level of

balance, we have integrated a full range of technology developed by Sony over a long span of specialization

as well as newly-developed technology. This pamphlet explains these technological components.

2. Producing accurate sound

2-1 Liquid Crystal Polymer Film diaphragm

For the driver unit diaphragm material, lightness and consideration

to the seemingly contradictory features of highly rigidity vs. high

internal loss is essential. Though rigidity is key in accurately

converting input signals over a wide bandwidth into sound, a

high level of internal loss is also required to suppress unnecessary

vibration of the diaphragm itself.

Liquid Crystal Polymer has already been identified for some time

as a material that can provide a balanced combination of these

two characteristics in high order. However, previously it could not

be used to create diaphragms for headphones due to the inability

of compositions and manufacturing methods to obtain sufficient

heat resistance and the inability to achieve the thinness required for usage in headphones, caused by a low

degree of film elongation and the difficulty of formation.

To solve this problem, a highly stretchable Liquid Crystal Polymer was successfully developed for use as a

casting film using polymer varnish. This made it possible to enable both rigidity and a high level of internal

loss over a wide bandwidth, while also providing the level of strength required to stand up to the process of

creating a thin film. In short, a material for creating the perfect diaphragm for reproducing accurate sound

was born.

Liquid Crystal Polymer FilmLiquid Crystal Polymer Film

2 (GB)

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Sony MDR-Z1000 User Manual Page 6