Speakers are offered in spectrum features for use in different heavy-duty applications. Speakers are used in boxes in various sound systems for use in theaters, home, entertainment and recreational club, pub, concert etc.

In speakers a drivers produce a sound wave by rapidly vibrating a flexible cone and a diaphragm. The cone, usually made of paper, plastic or metal, is attached on the wide end to the suspension. The voice-coil is attached to the basket by the spider, a ring of flexible material. The spider holds the coil in position, but allows it to move freely back and forth. Various types of speakers are like bi-pole, di-pole, monopole or direct radiator, electrostatic, planar magnetic, flat panel etc. They are available in various power (watts), and wide range sensitivity rating etc.

The term loudspeaker is currently used for both individual devices and for complete systems consisting of one or more drivers in an enclosure, often with a crossover circuit. Loudspeaker can be used in numerous applications from hearing aids to air raid sirens. Cost of the loudspeaker may range from pennies in a cheap radio to high-fidelity speaker systems. The loudspeaker is almost always the limiting element on the fidelity of a reproduced sound in either home or theater.

Computer speakers convert analog audio signals into the equivalent air vibrations in order to make audible sound. Computer speakers contain a pair of speakers plug into the computer's sound card, and their cases are shielded so that they can be placed near crts without causing magnetic interference. Starting in the 1990s, computer speakers have grown in sound quality, and many come as a system that includes a pair of small speakers and a subwoofer, which is considerable larger.

Almost all home theater speaker systems include the following speakers - front left and right speakers, center channel speaker, surround speakers and subwoofer. These home theater speakers work together to create the surround sound experience of a movie theater in your living room.

The front left and right home theater speakers offer a wide soundstage that blends with the video to create a more realistic and exciting movie experience. The front left and right speakers in home theater system also act as the left and right stereo speakers for listening to music. These stereo speakers make the best accessory to mp3 players, portable cd players, and computers.

When you watch a movie, the center channel delivers more than 50% of the soundtrack, including almost all of the dialogue. Surround speakers produce atmospheric, ambient sounds - such as raindrops, the rustling of leaves, or footsteps crunching on gravel.