Outdoor Outdoor speakers are specifically designed for playing background music at parties or conferences that take place outside. Most models are designed to resist a wide-range of weather conditions including moisture and snow. A few models are wireless and receive signals from your component system using an FM wireless transmitter. Wireless Speakers Wireless speakers get rid of wiring tangles quick enough. They work using radio frequencies to bring decent sounding audio.
Most wireless sets come in pairs of two speakers.
This is a special class of speaker that has grown in popularity over recent years. It is designed to deliver extremely low frequencies, below those that most woofers can reach. That's why it's called a Subwoofer. Since it takes a great deal of power to reach those exceptionally low frequencies, virtually all subwoofers have built-in amplifiers. Only one subwoofer is required per component system.