We audiophiles just need to have the best sounding audio system. Custom making one appeals to us, but if we don’t know what terms such as 4 ohm or 8 ohm that are mentioned on the speakers mean, then surely there will be a problem. Therefore, in the interest of all those who aspire to listen to the best sound, in this Techspirited article, we shall be providing a quick basic sound engineering lesson on the meaning and relevance of speaker impedance.
Keep in Mind
Speaker impedance is a variable quantity that changes in accordance to the signal frequencies that are fed into it. Since music normally has a lot of frequencies that are simultaneously present, manufacturers end up printing what is known as the ‘nominal’ impedance on the speakers. It usually represents the lowest values to which the speaker’s impedance will dip down to.
In today’s world, it’s all about inter-compatibility. And I am not just referring to the one that must exist between you and your other half. I am also talking about the one that needs to exist between your amplifiers and your speakers! It has a name too―impedance matching.
There exists a plethora of options for speakers and amplifiers in the market at present. But not all are compatible with each other. Hence, if one desires to build a customized sound/music system, understanding the speaker impedance rating and how it relates to the amplifier configuration is a must. But don’t worry. Even though it may sound intimidating, the concept of speaker impedance is actually pretty easy to grasp. So without further ado, let’s go ahead and find out what it is.
In conclusion, a speaker’s impedance is an important parameter that dictates the amount of current that will pass through it. It is essential that you match your speakers to your amplifiers or receivers to avoid overworking or damaging the amplifier and for getting the best audio output from it.