How to arrange indoor speakers

2022 08/11

When planning a PA loudspeaker system for sound reinforcement, the sound field of sound reinforcement should be considered first, that is, to fully grasp the acoustic characteristics of the sound reinforcement room, and to study what kind of horn speakers should be used and how to arrange them to make the effect good. Due to different situations, sometimes it is difficult to achieve excellent sound reinforcement effects only according to the function and arrangement of the speaker horn. For example, in a gymnasium that has not undergone acoustic treatment, after the sound is expanded, a clear sound cannot be obtained due to severe reverberation, and it is difficult to eliminate special reflection sounds such as echoes and trembling echoes only by sound reinforcement equipment. Therefore, the acoustic characteristics of the room are not good, and the excellent sound reinforcement effect cannot be obtained. The acoustic characteristics are excellent, but the installation method is not good, and on the contrary, the excellent sound reinforcement effect cannot be obtained.
Ceiling Loud Speaker

The loudspeaker installation plan should be accustomed to the shape, size, reverberation time, and operation diagram of the room, and the decision can be considered according to the following points: ① The sound pressure distribution throughout the room should be average; ② There should be no special effects that deteriorate the clarity Reflected sound; ③ It is not easy to cause feedback oscillation, that is, howling, formed by the reverberation loop of a horn loudspeaker, a microphone, a reducer, and a speaker.

As for the public address system, the sound field quality of the speaker box hanging on the side wall is higher. However, due to the convenience of installation and convenience for concealment, the scheme of installing ceiling speakers on the ceiling has been accepted by people, and is generally used in hotel corridors, shopping malls and other places where the ceiling is not very high.
Induction Wall Speaker

The selection of ceiling speakers should consider the main technical goals such as extra power, sensitivity, frequency response range, and size, among which the speaker size has an impact on the coverage angle.

When the branch line is laid, a metal partition can be added in the metal trunking, and the public broadcasting line can be laid on one side alone.

In the "Planning Standards for Automatic Fire Alarm System" (GB50116-98), there are no detailed rules for laying requirements for emergency broadcast lines, but rule 10.2.2: When fire control, communication, and alarm lines are installed in dark, metal pipes should be used. Or the rigid plastic pipe treated with flame retardant treatment should be laid in the protective layer of the non-combustible body, and the thickness of the protective layer should not be less than 3mm. When laying in the middle, metal pipes or metal wire troughs should be used for maintenance, and fire protection measures should be used on the metal pipes or metal wire troughs. Since the broadcast line has the same effect as the alarm line during fire rescue, the laying plan should be strictly followed the laying requirements of the alarm line in the planning.

Previous:Indoor setup of public address speakers

Next:The main technical indicators of the audio speakers of the broadcasting system