1. Impedance matching

When using uhf ktv wireless microphone AY-URX7Ⅱ products, the output impedance of uhf ktv wireless microphone AY-URX7Ⅱ products is the same as the input impedance of the amplifier, which is the best match. If the mismatch ratio is above 3:1, it will affect the transfer effect. For example, when 50Ωuhf ktv wireless microphone AY-URX7Ⅱ products is connected to an amplifier with an input impedance of 150Ω, although the output can be increased by nearly 7Db, the high and low frequency sounds will be significantly lost.

2. Working distance and proximity effect

Usually, the working distance between uhf ktv wireless microphone AY-URX7Ⅱ products and the mouth is 750px--1000px. If the distance is too far, the echo will increase and the noise will increase relatively. If the working distance is too close, the signal will be distorted because the signal is too strong, and the low frequency sound will be too heavy and affect the clarity of the language. This is because the directional microphone has the "proximity effect", that is, the low-frequency sound will be significantly improved when speaking at close range. However, sometimes singers intentionally use the "proximity effect" to make the singing effect more beautiful and pleasant.

3. The angle between the sound source and uhf ktv wireless microphone AY-URX7Ⅱ products

Each uhf ktv wireless microphone AY-URX7Ⅱ product has its effective angle. Generally, the sound source should be aligned with the center line of the uhf ktv wireless microphone AY-URX7Ⅱ product. The greater the angle between the two, the greater the treble loss. Sometimes when using uhf ktv wireless microphone AY-URX7Ⅱ products, there is a "boom" sound, and it can be reduced by deflecting it at a certain angle.