What is a monitor speaker, an essential equipment for stage performances.Anhui Bar Audio manufacture

　　First of all, in terms of the classification of speakers, speakers can be generally divided into three types: main speakers, monitor speakers and monitor speakers according to their uses. The main speaker is generally used as the main speaker of the sound system and undertakes the main sound reproduction task; the monitor speaker is mainly used in the control room and the recording studio as a program monitor to restore the musician's voice as faithfully as possible.

　　Monitor speakers, also known as stage monitor speakers and feedback speakers, are generally used on stages or dance halls for singers or band members to monitor their singing or performance sounds. Many people may be very puzzled, why do you need to configure monitor speakers if there are no main speakers on the stage? Xiaobai is stupid and can't tell the difference. Professional audio manufacturers tell you that in fact, on a normal stage, singers or musicians in a band need to listen to music accompaniment to sing, but the main speaker on the stage is facing the auditorium, and the accompaniment heard by the singer is actually from The accompaniment sound from the main speaker of the stage sound is transmitted to the auditorium and then reflected back through the surrounding walls. (Note: According to the speed of sound propagation, the sound returns to the singer’s ears and the accompaniment heard by the audience has a delay of one or two seconds, and the actual delay is closely related to the reflection angle of the sound, the reflection length, the size of the venue, etc.). If the singer sings to the returned accompaniment, the effect that the audience hears is that the singer can't keep up. So we can normally see that in front of the stage, there will be a few slightly larger speakers, facing the singer, not the audience, that is the monitor speaker. Its function is to allow the music accompaniment to be fed back to the ears of the singer or musician in time, so that the singer's singing and the accompaniment can be synchronized, so as not to cause the rhythm to fall behind due to excessive delay.

　　Of course, many singers now use wireless earphones for feedback, that is, the background directly transmits the accompaniment to the singer's wireless earphone receiver through a high-frequency carrier, and then transmits it to the small earplugs in the singer's ear through the earphone cable. The function is also equivalent to the monitor speaker.

　　Here I would like to mention the sincere work of our professional audio manufacturer - R-10II anti-listening speaker. The box is made of multi-layer high-density birch plywood. Computer software is used to calculate the best acoustic support point inside the box. The concave-convex groove process makes the box more solid. At the same time, high-strength reinforcement nails are used to reduce the energy caused by the resonance of the box. Distortion is reduced to the lowest level. The box is designed to be moisture-proof and dust-proof to ensure stable operation in dusty and humid environments. At the same time, it is equipped with high-quality dust-proof and waterproof aviation sockets. The best choice of monitor speakers for high-end performances, conferences, parties and concert sound engineering.

　　Discussion on the selection of three-way box speakers

　　Step 1: Determine the total power of the speaker.

　　Speakers with high, medium and low sound ranges are installed in the speaker, and the total power is 75% of the power amplifier power, which is the best matching state.

　　Step 2: Subwoofer

　　1. Select the corresponding power, must be able to withstand the impact of sound effects.

　　2. Cone cone material, paper, polymer synthetic material, bulletproof cloth, alloy.

　　3. Impedance: Common 4 ohms, 8 ohms. Sensitivity, try to choose a unified sensitivity for the three-way frequency. 90dB/W/m high sensitivity.

　　4. Resonant frequency: the three-way frequency should be as low as possible.

　　Step 3: Midrange Speakers

　　1) Power, WM=1/3WL is enough.

　　2) The frequency response range is connected with the bass and treble.

　　3) The sensitivity is matched with the high and low frequency unit, close.

　　Step 4: Tweeter

　　The first is power; when choosing a three-way frequency, WH is not less than 1/10 of WL. But the two-way frequency needs to be higher.

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