Published on October 30th, 2020 | by Bibhuranjan


PA Mixers: All A Person Needs to Know

Public address systems are well-known in the world today. Their benefits cannot be overlooked, as nearly every institution possesses a PA system. In events as well, PA systems are used a lot. Especially if there are many people and different audio channels such as microphones, speakers, and instruments. These channels have to be regulated so that the right channel plays at the right time. Music cannot be loud and banging as the MC announces the order of the day. An integral part of ensuring that there is no chaos in events and gatherings in terms of sound is a PA mixer.

PA mixers are a common sight, being in front of the table of whoever is in charge of regulating all the sounds in the event. The only thing is that people may not know exactly how it works. People may assume it’s as easy as plugging in audio in the channel, and all is ready. However, there are vital things that people tend to miss. The difference between a PA system and a PA mixer is one of the things people get wrong. A PA is a general system with inputs such as audio, mics, speakers, and many more. The PA mixer lumps the amp and mixer into one thing.

Components Of A PA Mixer

Three main things make up a PA mixer.  An input transducer is the first part.  This entails microphones or line-level output from an instrument. Secondly, it is the amplifier. The amplifier includes the preamps in the console and the power amps in the speakers. Lastly, it’s the output transducer that picks out all outputs, such as speakers and headphones. These are the significant components that an individual should look for in a PA mixer. Missing any of the above can ruin the sync in which a person expects to get from the mixer.

Uses of A PA Mixer

PA mixers are simple yet hold a lot of significance in any PA systems. The primary use of a PA mixer is sound control. Whoever is in charge will regulate sounds whenever needed. Typically using cues, the operator will have to add volumes of specific channels while reducing others. PA mixers are good at ensuring orderliness in events and public gatherings with a host.

Setting Up A PA Mixer

A soundcheck is a common term used before a show. PA mixers and the system are first arranged according to the space and needs of the group. Once this is done, pairing with all speakers, microphones, etc., is done. Signals are copied, and identical signals are sent to the front of house (FOH) and monitor the world. Signals are processed in the console, which is sent to the console outputs. Each output is put through an EQ and, in FOH cases, in a limiter. After all distribution signals are sent to their respective power amps, they are connected to their individual speakers.

After the set-up, the soundcheck is done, and the stage is ready for the upcoming show.

Photo by CHUTTERSNAP on Unsplash

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Editorial Officer, I'm an avid tech enthusiast at heart. I like to mug up on new and exciting developments on science and tech and have a deep love for PC gaming. Other hobbies include writing blog posts, music and DIY projects.

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