In the early 1980s, British Defense researchers found that composite plate materials made a loud voice due to vibration by accident during the study of fighter engine noise reduction method. So the researchers put forward that the composite plate material can be used to manufacture speakers, make sound by the smooth plane wave instead of the former spherical wave. In 1996, the appearance of the DML( Distribute Model Technology) made the speaker much thinner and even invisible.
In 2005, EOGO R & D team started an in-depth research of DML, hope to make a special invisible speaker can guarantee the sound effect of home theatre. Then, EOGO developed the 5th generation invisible speaker which achieved many breakthroughs in basic material, drive principle, and shape design; especially the Polymeric Acoustic Transmission Fiber Powder which have been patented by EOGO, primarily to solve the problem of the wastage of sound quality caused by the conventional putty powder, and make the sound more real and vivid.
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