Our planar ribbon technology provides the incredible detail, clarity and pinpoint imaging that make listening to BG loudspeakers so realistic and lifelike. A favorite of audiophiles for decades, the technology of today's planar ribbon makes them as reliable and robust as conventional transducers. The planar ribbon driver is an evolution of ribbon-based designs that were first conceived in the 1930s where early designs were costly, fragile and often unreliable.
Over the past fifteen years, BG has actively engaged in in-depth research and led the industry in solving important problems associated with the construction of planar ribbon based loudspeaker systems. BG Corporation was founded in 1994 with the goal of becoming the world's leading source of planar ribbon loudspeakers for Home Theater, Audio and Professional applications. A combination of patented technology and passionate dedication has allowed BG to achieve the true potential of the planar ribbon as the perfect transducer.
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Conventional Speakers present distinct and inherent engineering challenges Any cone type woofer or dome tweeter moving system mechanically represents a shell that is excited by a force through a voice coil along the singular circlular line at its edge.
As taught in physics, this is the most "favorable" condition for inducing resonance behavior in the shell. As a result, most cones are operating in the frequency range that produces break-up resonance, creating linear and non-linear distortion. There are also many other sources distorting the original signal in a conventional transducer such as motor system and suspension non-linearity, air compression and wave front distortion in horns and so on.
New achievements in sound reproduction are achieved with BG Planar Magnetic Drivers. First of all, the BG Planar diaphragm is directly and uniformly driven. There is no voice coil attached to the edge. An electromagnetic force acts on the aluminum conductors and is evenly distributed over the entire diaphragm surface. This eliminates the tendency to generate distributed resonance vibrations.
Secondly, BG drivers do not have additional glue joints and parts. Nothing stays on the path of transforming electrical energy into sound, just a light tightened membrane, which is not the case for a conventional driver.
BG Planar drivers are also phase coherent over their entire operational band while cones and domes have an inherent phase "smear" due to their depth (or profile). Another important aspect in performance is the difference in the mass of the moving system. The thin diaphragm of a Planar driver is ten times lighter than any compression driver diaphragm and even hundreds of times lighter than a woofer cone. This allows for an instantaneous response to the arriving signal as well as to the smallest changes in that signal. The low mass of a BG Planar moving system also allows for rapid decay after the impulse. All this results in superior transparency and low-level resolution not available in a conventional transducer.
