Learn about professional theater speaker sound reproduction characteristics

Have been achieved due to modern cinema is also stereo sound, and cinema sound from the left, middle and right-sided composition, were also placed in the appropriate speaker, after the screen, why? .Such as the one hand, the film screen's width over 10 meters, if only to set the left and right stereo, making the middle of the sound field was weak, with video screens in the speech of people generally in the middle, after making sweet spot .shift, reduce, audio and video and image separation, therefore, must be increased stereo audio Court Road information, and in order to make the same audio-visual and image, the speaker must also be placed on the screen, give the audience feel like a natural given; .In addition, the height of the speaker's placement agreement must meet the requirements of sound and picture, that is the height of the horn tweeter speakers for the screen display a high degree of 2 / 3 to meet the requirements of sound character. .Because in the theater, left, right-sided speaker's voice, have to cover the entire auditorium, so the high frequency unit, in particular, the diffusion angle tweeter must be effective control, the general requirement is 90 degrees horizontal, vertical .40 degrees, while the speaker placed on the screen, due to the larger screen of the block treble damages, up to 10db, also called the diffusion angle of the larger horn, play sound amplification. .2, the theater because theater speaker woofer sound fidelity is also very high, requiring the entire audio range of the sounds of nature can restore as much as possible of the contrast movie atmosphere, so the theater was the bass requirements dive .low, like guns, the roar of car engines, etc., generally dive to 35Hz or so, and there is considerable energy, in the jargon is still referred to as sub-bass, both of which require large-diameter woofer ., and 2-4 cell stack work. .The only way to achieve high fidelity requirements. .For good reproduction the subwoofer, in a multi-channel stereo signal, specifically a sub-bass signals all the way through the sub-bass speakers reduction, sub-bass digital stereo sound pressure level, the whole band to be higher than 10db, usually a bass .unit is rated at 600 watts. .500-seat theater, woofer power to reach a total of 4,000 to 6,000 watts. .3, bass box not set nets noted earlier, the theater speakers are placed on screen, in order to reduce the attenuation of sound signal and also for security reasons, there is no need to set the speaker grille. .4, the surround speakers in the front panel are downward-sloping theater surround speakers are generally placed in the audience hall after 2 / 3 after the beginning of the side wall and the wall, every 4 meters, height of 4 meters of the location ., taking into account the projection of the direction of surround speakers for the audience's ear, sub Left Surround, Right Surround, the audience can only be reached direct sound, so that they can distinguish the direction of surround sound, so surround speakers are made of downward-sloping front panel .The. .5, choose a lower crossover frequency in the selection of two speakers, the theater speaker's general election 500Hz or 630Hz crossover point is usually to achieve a higher stage box to 1.2KHz or so. .This is mainly on account of the film's dialogue as much as possible to avoid the crossover point, increasing clarity. .Power will have a greater frequency distortion, as the high-fidelity theater speakers, generally means using electronic frequency. .6, the speaker amplifier with the power and the use of speakers in the theater, in order to consider the dynamic range and sound quality and security of speakers, drive the power amplifier are the speakers rated power of 1.5 to 2 times..