What’s is bluetooth?
Bluetooth is a wireless protocol for exchanging data over short distances from fixed and mobile devices, creating personal area networks.
There are two important parameters of Bluetooth devices - class and supported profiles.
"Class" signifies the distance at which a Bluetooth connection is possible. Most mobile devices are Class 2, which means they have a range of up to 10 m. Class 1 devices are rare and have a range of up to 100 feet.
A "profile" is a type of Bluetooth connection. The most common are the Headset (HSP) and Handsfree (HFP) profiles that enable the device to connect to a wireless headset or handsfree.
Some other profiles are OBEX (OBject EXchange) which allows transfer of files, contacts and events; A2DP, which adds support for streaming of stereo sound and AVRC, which allows remote control of playback.
What is an ipod adapter?
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What is a car speaker?
Full range speakers are more common in car audio systems than component speakers. Full range speakers usually include a woofer, with a tweeter placed over the woofer. The woofer will handle low-to-mid frequency sounds, and the tweeter will handle mid-to-high frequency sounds. Since the drivers of full range speakers are connected, sounds of all frequencies will originate from the same place.