Chinese Institute of Electronics Engineering Branch of audio in October 27, 2004 to 30 in Wuhan held 2004 academic annual meeting, the company WU QI-JUN in will be elaborated on "no excitation magnetic moving-coil loudspeaker" one article ideas and arguments. To many experts from different point of view put forward their own views, to" hysteresis accompanying sound " and the invention relates to a new technology becomes more extensive consensus.

During the meeting, WU QI-JUN and Liu Shulan, King Yizhen, tube group of good, Hu new, Leei, Yang Weizhong and other famous scholars and experts were contacted, discussed our country become a big power from the speaker speaker some ideas.