Sound reinforcement system mainly product information and related parameters: JBL JRX112M FOH sound stereo Features: JR × 112M stereo is a compact and low profile design, so do not take up too much space or block the vision of the audience hall. The most important stage is the speaker midrange clarity. We pay special attention to maximize the harsh tenor optimization features. Use JR × 112M high sound pressure sensitivity and moderate drive amplifier can produce powerful enough sound pressure level. JR × 112M includes JBL's dual-angle pole socket, the front room, after the part of the audience can get the same sound pressure level. Technical parameters: Frequency range (-10dB) 1 60Hz-16kHz frequency response (± 3dB) 1 70Hz-12kHz sound pressure sensitivity (1W / 1m) 99dB rated power and impedance 2 250W / 8Ω peak power (W) 2 1000W Recommended amplifier ( W) 250W-500W / 8Ω maximum SPL (1M) 129dB directivity characteristics (HXV) 90 ° x 50 ° 1.8kHz crossover frequency volume (H x W x L) 572x394x318mm Weight (kg) 19.5 low frequency drive (JBL) M112 -8 high frequency drive (JBL) 2412 1 "sound reinforcement system equipment usage scenarios: (1) as a lecture, you must ensure that the language of sound clarity, if people can not hear the speaker's language, it will affect speech . The effect, therefore, in the electro-acoustic sound system design should take full account of increase speech intelligibility: enough fullness acoustic properties (2) sound system sound system equipment not only to meet the acoustic characteristics of indicators for national standards stereo surround sound design, but also to meet the requirements of subjective listening, because the acoustic characteristics of indicators not fully reflect the actual sound effects sound system, the sound is good or bad is ultimately determined by the subjective feeling of listening, acoustic design, and construction of electro-acoustic sound Design should be a good match, meet the following requirements subjective listening: proper loudness (3) the intensity of loudness is the actual feeling of listening, it has a direct relationship with the maximum sound pressure level indicator sound reinforcement system for performance is concerned, only. achieve adequate loudness, in order to make sound effects to the full performance of the system output power, speaker placement, etc. will directly determine the loudness of the state of the listening area: high-definition auditorium lighting and sound engineering, audio, video from Wuhan Wuhan Jiuhua Jiuhua Video Engineering Co., Ltd., Wuhan Jiuhua Video Engineering Co., Ltd. (www.jowa-tech.com) strong, credible, in Wuhan, Hubei control and adjustment equipment industry has accumulated a large number of loyal customers. The company excellence work attitude and constantly improve Wuhan Jiuhua innovative ideas will lead into the brilliant video and you work for a better future!