A car’s audio system uses several different drivers in order to help produce high-quality sound. The speaker crossover’s purpose is to connect each driver to a specific range of frequencies. The crossovers that are most commonly used in car audio systems are passive crossovers. They are called passive since they don’t require any kind of external power source to run. A passive crossover is powered by the audio signal that streams through it. This type of crossover utilizes inductors and capacitors. These circuitry components will only function as good conductors if specific conditions are met. For example, a crossover inductor will only work well as a conductor if the frequency drops below a predetermined level. On the other hand, a crossover capacitor can only function as a conductor if the frequency is above a certain level. The audio signal passes through each driver’s crossover unit. To reach the tweeter, the signal needs to travel through a capacitor. In … [Read more...] about What’s the difference between active and passive speaker crossovers?
Sound waves travel through air pressure changes, and the sounds you hear differ depending on how frequent and how big those waves are. Microphones turn sound waves into electric signals, which is how you can record sound onto CDs and other devices. When you play the recorded sound, it's turned back into an electrical current. Speakers work like reverse microphones. They turn the electrical currents into physical vibrations that make the sound waves for your ears to pick up. When everything is tuned properly, the speaker is able to reproduce the vibrations that the original microphone recorded and changed into electrical signals. The voice coil component of a speaker is actually just an electromagnet. Electromagnets are coils of wire, and they're normally wrapped around some kind of magnetic metal, like iron. By running an electrical current through the wire, you produce a magnetic field surrounding the coil; this field magnetizes the metal in the middle creating north and south polar … [Read more...] about What’s a voice coil on a speaker?
Weatherproof speakers are quite similar to the type you'll find in your home, though they're likely to be made from different materials and sealed tightly to prevent excess moisture from ruining them. iStockphoto/Thinkstock You're at a theme park. The smell of funnel cakes has your mouth watering. Hundreds of happy people are walking in all directions around you. As you turn the corner, suddenly you brush up against the fronds of a giant jungle fern. The sounds of drums seem to come from off in the distance, and exotic birds of all kinds chirp and squawk from the trees. You look up, hoping to spot the vibrant plumage of a macaw, but instead see the corner of a carefully camouflaged speaker. Next to you, another speaker camouflaged as a rock provides the sound of a rushing river. You chuckle to yourself as you've figured out the secret, and marvel at the time and effort put into making the environment so immersive. And then suddenly it strikes you -- this expensive electronic … [Read more...] about How Weatherproof Speakers Work
Traditional speakers produce sound by using an electromagnet to move a flexible cone back and forth. They use drivers to help translate electrical signals into physical vibrations so that you can hear recorded sounds. A tweeter is the type of speaker driver that produces the highest range frequency. The other two main drivers are woofers and midrange. Basically, a driver moves a flexible cone, or diaphragm, back and forth very quickly to produce sound waves. The diaphragm is normally made of paper, plastic or metal and it's attached to the suspension's wide end. The suspension, also called the surround, is a flexible metal rim that lets the cone move. It's connected to the basket, which is the driver's metal frame. On the narrow end of the cone is a voice coil, which hooks up to the basket via a flexible metal ring that lets the coil move back and forth while still keeping it in place. The difference between a tweeter and the other two types of drivers is mainly size-related. A woofer … [Read more...] about What is a speaker tweeter?
"Stereo" is a shortened version of the phrase "stereophonic sound system," which refers to sound recording equipment that uses at least two separate microphones and separate speakers in the production of recordings. The different sounds and instruments are recorded on separate tracks and separate speakers are utilized [source: Britannica]. Let us now define and explain each key component. Spider The spider is a flexible ring that keeps the voice coil in place. It also secures the back of the speaker cone to the frame, all the while allowing the voice coil and cone to continue vibrating freely.Diaphragm The diaphragm is the surface where the sound radiates from. If you have a woofer speaker, the diaphragm is the speaker cone. If you have a tweeter speaker, the diaphragm is dome shaped.Voice coil The voice coil is a small coil of wire that creates a magnetic field. This magnetic field varies depending on the amplified sound being sent to the speaker. The voice coil works with various … [Read more...] about How to Understand Stereo Speaker Parts