In the product description of wireless microphones, you’ll often find comments like "the number of waves that can be used at the same time" or "the number of waves can be used in the same area." What is this? This time I would like to briefly explain this.
The expression "wave" came up, but simply speaking, it’s just the number of microphones (transmitters). For example, if the number of simultaneous waves is six, it means that up to six microphones can be used simultaneously in a limited space.
A common question: is it possible to connect 6 microphones with one receiver if you can use 6 waves? The answer is no. A wireless receiver is typically used one-to-one with a transmitter. Depending on the product, one receiver can be equipped with multiple tuners, or by adding an optional tuner, one can connect two microphones or four microphones.
■Single Channel Type
■Dual Channel Type
■Quad Channel Type
If we can simply connect at the same frequency, can we use many at the same time? Again, the answer is no. If you compare a microphone to a bowling ball and a frequency channel to a lane, you'll crash if you throw more than one ball in the same lane at the same time, right? (In the first place, it is not good to throw two balls in one lane, LOL) Similarly, if two or more microphones are used at the same time on the same frequency channel, they will interfere with each other and loud noise will be generated.
Why can only a certain number be used? I’ll explain this for each frequency. First, in B band, the frequency has a peak-like waveform. In order to output sound properly with a microphone, it is necessary to secure the peak-shaped waveform area. If the frequencies are set close to each other, the peaked waveforms will overlap and the area cannot be secured. If it cannot be secured, the sound will not be output correctly. B band has up to 30 channels, but the waveform is peak-shaped, so if you try to secure the area, there will be 6 waves at most. (* Depending on the manufacturer, there are also units that can handle a maximum of 8 waves) On the other hand, 2.4GHz has a narrow waveform, so you can use adjacent channels, up to 16 of them.
Of course, the specifications are different depending on the product. Please note that not all products can use 30ch or 16ch!!
How about the number that can be used simultaneously?
The content described above is also mentioned in the following blogs. Please refer to these!
- New Product Introduction CLASSIC PRO / CWS800 Series-My Recommended Wireless Microphone-
- Talking about recommended wireless microphones-Line 6 / XD-V series-
- Recommended Wireless Microphones by Usage-Handheld Edition-
Let's meet again with the Wireless Microphone “I Can't Ask That Now” series.