It’s hard to believe that a series of magnets attached to plastic parts can create and amplify sound in such a wide variety of ways, but that’s essentially what is at work inside any speaker system. Many people do not have a thorough understanding of how their speaker system works—it’s just enough that it does work, which is totally understandable.
However, in the event that you’ve ever wondered exactly what’s happening inside the case of the speaker, here’s a bit of information from our home audio store in Chicago about the components that make up a speaker and the role each of them plays in providing you with crisp, powerful sound:
- Cone:The cone gets connected to the voice coil. Its primary function is to move air inside the speaker, which helps create the sound waves. These days, more speakers move air with a dome rather than a cone, but they essentially serve the same function.
- Voice coil:So we know the voice coil is connected to the cone(or dome), but what is it exactly? The most basic description is that it is an electromagnet that powers the cone. It is alternately charged negatively and positively.
- Magnet:There is a non-changing magnetic field inside every speaker that allows the alternating magnetic force of the voice coil to be either repelled or attracted.
- Plates and pole piece:A top plate, back plate and pole piece are all magnetically conductive parts that help to better concentrate the energy of the magnet around the voice
- Surround:A flexible ring inside the speaker, the surround keeps the cone from moving side to side, but enables it to move either forward or backward.
- Spider:The spider is a type of cloth disc inside the speaker that prevents the voice coil and the bottom of the cone from moving to either side. It helps to focus the motion of the coils in a forward and backward direction. When paired with the surround, it helps to form a suspension system inside the speaker between the parts that move (the voice coil and cone).
- Frame:The frame is what holds the entire assembly of the speaker together, and allows you to attach it to the cabinet.
- Dust cap:The dust cap covers up the middle of the cone, and prevents dust and other debris from seeping into the gap between the pole piece and the magnet, where the voice coil is located. Dust entering the system could have a detrimental effect on the sound and the health of the speaker as a whole.
This is just a cursory overview of some of the most important parts of a speaker—there are other parts that play a role in the speaker’s operation and general functionality, and those who work
with speakers must understand other audio concepts and how they are influenced by these parts. But for more information, you can reach out to your trusted home audio store in Chicago today.