Guangzhou Wei Fen Audio Equipment Factory is a development, production and sales of speakers, SoundColumn, professional stage boxes business.
广州市奋威音响器材厂是一家集开发、生产和销售音箱、音柱、专业舞台箱的企业。
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In this paper, the resonance frequency of the soundcolumn is investigated both theoretically and experimentally, and the efficiency of the soundcolumn at resonant frequency is also calculated.
本文从实验和理论方面对声柱谐振时的频率进行了研究，并对声柱谐振时的效率作了理论计算。
3
Meyer Sound also launched the Mina line array system and the CAL steerable column array - new products that may have been passed by in the heat of the moment.