A public address system (PAS) is an electrical system consisting of amplifiers, speakers, microphones, and other associated equipment. It amplifies the audible sound or volume of a live human voice, musical piece, or other recorded sound or audio. It is often used to broadcast over public places like streets, parks, and buildings. This is done with the use of PA systems that are attached to halls, auditoriums, and other areas usually used for large gatherings.
To start, all the relevant connections are made between the PA system and the PA mixer or loudspeaker. This includes ground wire that goes to the nearest speaker, input jack which is connected to the PA mixer and input speaker, as well as power cable that goes to the amplifier. The amplifier controls all the speaker elements, such as tweeters, mid range speakers, and bass speakers. However, it also has an option to switch between different speaker elements. When switching the different elements, the input and power jacks are moved to the appropriate positions.
In addition, the speaker elements have pre-amp and post-amp configurations. Pre-amps provide the necessary power for the speaker components, while post-amps are necessary to provide a reliable connection between the amplifier and the mixer. A PA system, whether you're using the front of house or the PA system in a public place, needs to have an effective set up that can prevent feedback, maximize signal quality, and provide maximum performance. Let's take a look at how you can improve your system by following these tips.
Firstly, you should always buy PA power amps that are efficient and of good quality. You can easily find them by going online or checking out music stores in your locality. However, if you're having a hard time deciding on which kind of PA system to buy, it would be better if you can take the assistance of an amplifier expert. They will be able to tell you more about what kind of amplifiers are suitable for your pa system and can help you make the right choice.
As a general rule, it's important that you buy a microphone that has a minimum of 30 watts. This is especially important if you're performing in a bigger venue where sound quality is more crucial than in smaller venues where you can utilize the power amps. If you use an overly large or powerful microphone, you might end up damaging the delicate condenser microphone that's found inside your PA system. To prevent feedback, your condenser microphone should always be kept at a distance from the amplifier. You can easily tell if the microphone is transmitting too much noise by feeling the resistance.
Another tip for ensuring optimal performance when using your pa systems in a smaller venue is ensuring that the mikes are placed at an appropriate height. Mics need to be placed such that they are not too high that they interfere with the speaker's range of frequencies. Mics that are too low or too high might cause interference to the speaker's signal which could also affect the sound quality. On the other hand, if you place your mikes too close to the stage, you might end up clipping the speakers. It's important to be conscious of the distances between the speaker and the mic in order to avoid this problem.
As far as the power amps go, the rule is pretty simple. Maintaining a low wattage is highly recommended so that you don't compromise on sound quality. If possible, purchase one that does not require additional amplifiers. This will allow your speakers to handle heavy load without struggling. Furthermore, ensure that the amplifier can handle more than four microphones at one time. For those who do have their own power amps, ensure that you use them wisely.
The mixer is one of the main components of your pa system. It is used to mix the left and right channels and send it to the two main speakers. It is highly advisable to choose a mixer that has a sump suction tube for eliminating unwanted noise. It is also advisable to purchase a mixer that has a programmable fader so that you can instantly set the levels of both the left and right channels. It is recommended to purchase a mixer that has at least eight channels for better sound quality.