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M - 122 SYSTEM in the market within a short span of time, has been widely acclaimed, many countries in the world at large the frequent use of, give a person with deep impression, so tie-in and specially designed special speaker processor, not only can effectively compensate for the slight illness cannot change caused by physical properties, and can maximally protect the speaker unit, ensure the normal operation condition can't be burned speaker unit. A sound coverage control will have to close to linearization of professional tools, break through the traditional speaker voice of noise source of old ideas, will strip source ideas into real products, a complete set of equipment into full frequency and low frequency parts, all frequency part is composed of M - 122 large array, not only has the advantages of lightweight, fine, and has been a breakthrough in terms of power and energy change. 2 columns, a total of 600 w comb shunt type isometric strip high-frequency sound body, complete the essence of the linear array, the bass has continued the DAS bass before manufacturing, and in the low frequency limit and elastic under the great pains, combination collocation, can say in wide large area ground is absolutely fantastic test-taker.