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Butyl rubber is generally used in speakers, specifically the surrounds. It was used as a replacement for foam surrounds because the foam would deteriorate. The majority of modern speakers use butyl rubber, while most vintage speakers use foam.
Yamaha NS-2000 Speaker, rear panel cable terminals. Yamaha NS-2000 Speaker, front with cover attached. First produced in 1982, the Yamaha NS-2000 is an improved version of the older NS-1000 speaker that was first made in the early to mid-1970s. Like the NS-1000, it is a 3-way acoustic suspension speaker system with a beryllium-dome midrange and ...
A small amount of airflow must be allowed so that the speaker can adjust to changes in atmospheric pressure. A semi-porous cone surround allows enough air movement for this purpose. Most Acoustic Research designs used a PVA sealer on the foam surrounds to enable a longer component life and enhance performance. The venting was via the cloth ...
The speaker with its characteristic diffraction-absorbing foam surround for tweeter. For its outside broadcasting monitoring, the BBC required a small studio monitor suitable for near-field monitoring of the frequency range from 400 Hz to about 20 kHz. The principal constraints were space and situations where using headphones is unsatisfactory ...
It is also used by speaker driver manufacturers as the material for low damping rubber surrounds. Additionally, it is used in some rubber cutting boards. SBR is also used as a binder in lithium-ion battery electrodes, in combination with carboxymethyl cellulose as a water-based alternative for, e.g. polyvinylidene fluoride. [9]
The Apple Pro Speakers were introduced in January 2001 alongside the Power Mac G4 Digital Audio, based on the G4 Cube's spherical speakers with a new digital audio system, plastic grilles, white rubber/silicone surrounds rather than the black foam used on the G4 cube speakers and changed the connector to a proprietary minijack that provided ...