Welcome to the CEAD BMR 4.5 Speaker experience.
AKOUSTIKS has engineered the CEAD BMR to deliver the full range of operational frequencies across a wide range of power settings. Even at low volume settings the speaker’s high quality efficiencies ensure the ultimate listening experience. Background music and speech re-inforcement at normal to low power settings has never sounded so good. The CEAD BMR 4.5 is a revolutionary new concept in high quality sound.
The CEAD BMR, utilising patented technology, simultaneously operates in PISTONIC and VIBRATIONAL modes to generate wide bandwidth acoustic output with a flat frequency response, consistent dispersion and low distortion.In a conventional loudspeaker, the diaphragm – whatever its shape and means of motivation – is designed to act as a ‘piston’, at least over much of its operating range. It is intended to move as a rigid, coordinated whole to displace the air at its surface.
In contrast, a BMR is a modal loudspeaker, which uses prescribed panel shapes, where a limited number of bending resonances are harnessed. The two simple shapes which are used to exploit this technology are circular Audio Full Range (AFR) and high aspect ratio (HARP) speakers. The panel is built into a chassis, much like a traditional loudspeaker, with a voice coil, surround and spider, but the use of a flat panel makes the unit shallower. Application of BMR technology to AFR and HARP makes for a substantially flat, full-range on-axis frequency response combined with wide directivity.May 2011