Henan line array sound construction unit which is located on the stage because they put behind the main line array sound stereo, can not listen carefully to their sound or the sound of the band playing, it is not a good fit or find the exact feeling that seriously affect performance results . General back to listen to the audio line array made of beveled shape, on the ground, so that can be placed on the stage will not affect the overall shape of the stage, but also to make people listen carefully to the stage during playback, the sound is not caused by the feedback to the microphone causing howling. Press box structure to points: Sealed linear array can be divided into stereo, reverse-phase line array audio, line array sound labyrinth, Henan line array sound construction unit sound Jiaming Yang Cheng 1393 + 90 664 + 17 * Sunshine City technology market in Milan Building 5, Unit 2, 208 line array sound wave tube and multi-cavity resonant line array audio. In the professional line array sound which most frequently used is vented line array sound, which is characterized by wide frequency response, high efficiency, large sound pressure, consistent line array sound system speaker type, but because of less efficient, so in Professional Line Array Sound is seldom used, mainly for the domestic line array sound, only a handful of professional audio monitor a closed box structure. Sealed with debug line array sound simple, wide frequency response, low frequency transient characteristics of good design, etc., but the higher the sound of the dial unit requirements. At present, various linear stereo, vented and sealed linear audio line array sound occupied most of proportion, form the structure of other types of line array sound range, but rarely share. "This index reflects the main frequency range speaker work. When the speaker to be a constant voltage source at low frequency to high frequency changes in the signal source, the sound pressure generated by the speaker will vary by frequency changes. It follows that sound pressure - - frequency curve, that is, the frequency response curve of the loudspeaker can .IEC predetermined speaker reproducing sound frequency limit, which is the effective frequency range, is to take the speaker sound pressure frequency characteristic in the vicinity of a ratio of the peak bit multiplier The average sound pressure level of 10dB lower frequency range. The wider the range, the better the Henan burst characteristic linear sound construction unit Jiaming Yang Cheng 1393 + 90 664 + 17 * City technology market in Milan sun, Building 5, Unit 2, 208 general-fidelity speaker It refers to the nominal impedance of the speaker at a particular operating frequency (IF) frequency response when the minimum requirements for tank 50- 12500HZ (+ 4 ~ -8dB), is sufficient to achieve 50-16000Hz course 30-20000Hz better. Usually that is the trademark on the product nameplate impedance input of the measured values ??given by the manufacturer. impedance characteristics of the speaker's rated impedance is given by the manufacturer is usually rated frequency range is expected to be the largest power impedance modulus values. Nominal impedance 4 ohms general provisions, 8 ohms, 16 in Europe, 32 in Europe and other foreign countries also have an important indicator of the use of three in Europe, six in Europe and so on. "[3) the power to choose the size of the speaker's power to use the speaker should pointed out that there is a big difference between domestic and foreign speakers of standard method, it is because of the power of interpretation of the definition varies Henan line array sound construction unit.