It can say that setting up a public address system (PA system) is to convert the weak sound signal (like a produced vocal) into an electric signal. The purpose is to increase this signal size and convert it into the energy of the stereo at the excellent volume in a significant way. Thanks to the operation of the amp, the stereo signal size is increased while converting that signal into the audio energy is due to the speakers.
There are the main components to make up a PA system. You ought to know that the speakers can be damaged or replaced a new pair once you matching the speakers and amplifier in a PA system is incorrect. If you are confused with this one, you can consult this article. We will give the fundamental theory behind the ratings of both the speaker and amp. At once, the reasons can lead to a damaged speaker, the way to match the speakers and the amp to produce the high-quality sound, and the minimization of the damaged speakers will also be mentioned below. Let’s see right now!!!
Guidelines the Way to Match Speakers and Amplifier Correctly
The Manner Speakers and Amplifiers Work Together
Owning the small electrical signal, the stereo signal amp utilizes the transistors in order to produce an electrical signal. Although the original fluctuations of the voltage are recreated, the power is higher. For the speakers, their operation is based on the principle of the electric motor. And then, from the amplifiers, the electrical pulses are channeled via the wired coil so as to create the magnetic energy in the electromagnet form. Thus, the second fixed magnet will attract or repel that coil in order to create the vibrations in the fixed cone. The created sound is due to the transferred energy into the air.
How to Rate Speakers and Amplifiers
When mentioning to the power ratings, the speakers and amplifiers show the ability to supply so that they can cope with the supplied power. People utilize Watts to measure the power. At which energy is measured in Joules, the power is also the rate that has the conversion from this form to another one. For instance, the power ~ 1 Watt is equivalent the energy ~ 1 Joule each of seconds. Similarly, every second, 10 Watts is also equivalent 10 Joules. In fact, there are a couple of methods utilized to describe the electrical signal power, but not all will be used to rate the power of the speakers and amplifiers:
- The instantaneous power: It refers to the utilized power throughout the operating process. However, it isn’t considered as a useful method to measure the speakers or amplifiers, especially when the utilized power has moved the cone of the speaker in a complex way.
The instantaneous power gets the maximum level throughout the signal – Peak power. For the amps, if you want to describe the maximum-instantaneous-limit capacities for the audio, the bass notes or drumbeats, for example, this power is helpful. The available-supplied power limits the peak power of the amp. In particular, there is the increase of the input level while the limit of the supplied power is reached by the amplifier. This is also considered as a distorted form of the signal when clipping happens. At that time, the speaker cone can reach the rearmost point, so the damage is difficult to avoid.
- Average power or RMS: Yes, this is the output capacity of the maximum continuous average power without being distorted the signal to a load-specified impedance, in particular, when the speaker is considered the load. It can say that this method is the most suitable one to compare the power between the speakers and amps.
- Program power or music power: It is often utilized in the ratings of the speakers. Instead of using the reproduced sounds and distributing the power, the manufacturers conceived the terms. At once, the pure tones are seldom produced by the speakers. Accordingly, we can consider either program power or music power like approximately equivalent average twice the power.
The Reason of Failing
Basically, we can recognize that the cause makes the speakers fail – the distortion of the signal or the excess of the power owing to the amplifier supplied. There can be considered as the effect of heat. It has sent an electrical signal via the coil of the speaker. Once the power is excessive, the damaged speaker or the destroyed coil is difficult to avoid. If you are worried about this, you should equip a low-powered amplifier. It has the ability to clip the produced signal at the high frequencies, which is the cause of burning the horns or tweeters.
The Manner to Match Speakers and Amplifiers
When setting a PA system, it requires you to have to match the ratings of the speakers and amplifiers with the various methods. The rated speakers with music power and the rated amp with RMS power is a typical example. When you determine the different power of both, it makes sure that your matching is correct.
In case your speakers and amplifiers are the RMS power, it ensures that the power level is not overdriven, by comparing in a direct way between the speakers and amplifiers as long as the rating is the same. Nonetheless, it doesn’t recommend that you set the system that the overdriven amplifier because it can lead to clipping. On the contrary, the rated speaker double the RMS of an amp is ideal.
In a case of the rated speakers by the program or music power, it must double the power of the amplifier. For instance, if the speaker is 200 Watts, the amplifier will be 100 Watts. Clipping can happen with the dance or live music. At that time, the program or music power of the speakers can double or over in comparison with the RMS power of the amplifier.
In general, the design of a PA system should ensure the strong power of both the speakers and amplifiers. Like that, driven is never and the power is produced a continuous way. The above information will be useful for your installation. Succeed in you!!!