For handheld wireless microphones, please note: 1. Don't put your hand on the net of the microphone. This is because the receiving parts of all microphones have certain directivity. If you hold the upper part of the net cover by hand, the frequency response will be seriously damaged, and focusing and feedback will also occur due to palm gathering effect. 2. Don't hold the antenna of microphone tightly. The transmitting circuit and antenna of a handheld microphone are generally located at the lower part of the microphone (away from the microphone head). When we hold it with our hands, it will greatly attenuate the transmitting power and affect the receiving effect. 3. Do not use two wireless microphones together. Because the handheld wireless microphone is two transmitters, it will produce harmonic pool dew. When two wireless microphones are close together, the harmonics between them will modulate each other, which will cause interference and seriously affect the transmission, reception and sound quality. 4. Don't put the microphone and mouth too close. In use, the distance between the microphone and the mouth should be kept at 5- 10 cm. Too close will have the effect of speaking close, too far away will destroy the sound quality. 5. Avoid the microphone directly facing the speaker. If the microphone directly faces the speaker, as far as the acoustic system is concerned, it will form a closed loop and produce positive feedback oscillation (howling), which must be avoided. For the collar-clip microphone, it is mainly to prevent it from being too far away from the mouth and to be as close to the mouth as possible, while the headband microphone should be moved to both sides to avoid the mouth facing the microphone head and the impact of sound airflow. I hope I can help you!

Wireless speakers should be the same, right? I use the Australian shield speaker, and the wireless microphone should be equipped with a receiver. Some receivers are directly installed in the speaker, such as AUDON AD-9 18R. If it is not installed inside, directly plug the receiver with USB interface into the speaker, and connect the speaker and the receiver with * wire. After the connection, it can be used directly.

There are four wires on the mobile speaker, DC. An intermediate transformer must be added to this current-mode speaker. The input of this transformer is ohm. For example, the output is a voltage, such as 0 Ω 8 Ω16 Ω. That is, the low-frequency induction signal is converted into a high-voltage current signal. If it is an inductive speaker, it is directly connected to the terminal behind the amplifier board.