A PA system`s main role is to receive frail audio signals from devices converted them into sound energy that has a more enhanced volume. To avoid damaging your equipment you should ensure that the speakers you use and your amplifier are properly matched in regards to the output power of amplifier and the rating of speaker power. This article will help you understand some basic concepts when using amplifiers and speakers so as to enjoy better sound quality.
How speakers and amplifiers work together
Basically, audio amplifiers captures weak electric signals then use a number of transmitters to generate an electrical signal which re-enacts the signals with more power compared to the original one. On the other hand, speakers function under the electric motor principle. They receive the electrical signals generated by amplifiers then channel the pulses through a wire coil generating magnetic energy in an electromagnetic form. The wire coil is the attracted and repelled by another fixed magnet which results to formation of vibrations on the paper cone which transfers the energy into the air as sound. You will therefore require this very good amp wiring kit guide when installing your amplifier.
How they are rated
The rating of speakers and amplifiers is dependent on the amount of power they can supply and their ability to withstand input power. The amount of power is measured in watts. Power of electric signals can be described in a number of methods used to rate amplifiers and speakers. The methods include; Average power, which is the highest constant power output capacity of the required ingenuous signal to a specified speaker. The other method is known as Instantaneous power, which is basically the amount of power in use at any specific instant when working. The third method used in rating is the peak power. It is the maximum amount of power available when the device is in use. The peak power of amplifiers is usually limited by amounts of input power. The peak power in speakers is attained when the cone stretches to its furthest point.
Causes of speaker fail
You will notice that the main causes of failure in speakers is usually because transmission of warped signals to the speakers by the amplifiers and supply of excess power to the speakers. It is important to note that excess power will generate a lot of heat that can cause damage to the coil of the amplifier. You should avoid under powering your amplifier as this will force the signals to produce high frequencies that may burn up the speaker horns or tweeters.
How to match speakers and amplifiers
When assembling your PA system you may be required to match amplifiers and speakers rated using different methods. In a case where the rating used is the same, just match them up directly. For a case where your speaker are rated in terms of music power, this will be twice the average or RMS power and you should therefore that your speaker rating is twice the rating of the amplifiers. It is also important to always correctly power your amplifier to avert clipping.