Can not say more than several speakers who is superior, the effect is good and who do it, the price is low who is the boss. R & D technology and materials used determines the quality of the pros and cons. Niubi point of R & D personnel made out of two-way speaker than most people do in three frequency coaxial even better. Another speaker is only one speaker, but the entire band can show full-range speakers, may be the landlord said first paragraph, this speaker can not make good results in general, because you have to be responsible for the entire band really a horn a bit difficult, speakers Optical Valley Metro company, which is generally used for small ceiling speakers or multimedia speakers Oh, doomsday collapse professional speaker, if it is broken, only to buy a separate sound card, dozens of pieces of old) computer has no sound possible Six: a voice but not see small speaker, speakers, open the Control Panel - sound and video equipment - the volume in "the volume icon in the taskbar" check mark before; some other method to solve the computer no sound: 1 For a separate sound card, check the sound card and the motherboard socket contact is good, it can re-plug the sound card. Future City speaker installation, Wuhan Jiuhua video (online consultation), the speaker offered by Wuhan Engineering Co., Ltd. Jiuhua video. Video Jiuhua Wuhan Engineering Co., Ltd. (www.jowa-tech.com) is a leader in Wuhan, control and adjustment of the equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Jiuhua video in Wuhan leadership with the staff warmly welcome all inquiries negotiations to create video Jiuhua Wuhan better future.