UHF-501-A little common sense: the head with the palm of clinging net result is equal to the first sound isolation chamber surrounding sound loops or change the resonant frequency of the microphone chamber will cause a positive resolution of the frequency response characteristics of the microphone and the directional characteristics of severe deterioration, but also because of the palm should gather sound resonance frequency caused by a certain period of enhanced feedback generated sound UR-32 tips: Replace the battery in the best way is to open the show mixer channel "mute" switch K Song computer conference speech microphone, wireless microphone is mute state, such as the mixer does not have this feature can be a wireless microphone receiver output level shut teaching conference broadcast microphone system, then turn off the transmitter power, replace the battery after Turn on the transmitter and the receiver output level of recovery; or the use of closed mixer input gain or use the Line / MIC selector switch the input signal to be replaced after the battery and then turn the mixer input gain or select key to reset KTV conferencing system microphone Mai | Junya Electronics (certified) | Enping microphone provided by Junya electronics factory. Enping Junya Electronics Factory (shop1394643557089.1688.com) Guangdong Jiangmen, microphone, microphone leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Junya electronic leadership in the staff warmly welcome all inquiries negotiations to create a better future Junya electronics.