Editing Tweeter (section)

== Operation ==
[[File:Tweeter Polycell.jpg|thumb|Polycell tweeter from an Infinity speaker, showing the components]]
[[File:Ohm speaker cropped.jpg|thumb|Ohm CAM 16 speaker with "egg tweeter"]]

Nearly all tweeters are electrodynamic drivers using a [[voice coil]] suspended within a fixed magnetic field. These designs operate by applying current from the output of an [[amplifier]] circuit to a coil of wire called a voice coil. The voice coil produces a varying magnetic field, which works against the fixed magnetic field of a permanent magnet around which the cylindrical voice coil is suspended, forcing the voice coil and the diaphragm attached to it to move. This mechanical movement resembles the waveform of the electronic signal supplied from the amplifier's output to the voice coil. Since the coil is attached to a diaphragm, the vibratory motion of the voice coil transmits to the diaphragm; the diaphragm in turn vibrates the air, thus creating air motions or audio waves, which is heard as high sounds.

Modern tweeters are typically different from older tweeters, which were usually small versions of [[woofer]]s. As tweeter technology has advanced, different design applications have become popular. Many [[soft dome tweeter]] diaphragms are thermoformed from polyester film, or silk or polyester fabric that has been impregnated with a polymer resin. Hard dome tweeters are usually made of aluminium, aluminium-magnesium alloys, or titanium.

Tweeters are intended to convert an electrical signal into mechanical air movement with nothing added or subtracted, but the process is imperfect, and real-world tweeters involve tradeoffs. Among the challenges in tweeter design and manufacture are: providing adequate damping, to stop the dome's motion rapidly when the signal ends; ensuring suspension linearity, allowing high output at the low end of its frequency range; ensuring freedom from contact with the magnet assembly, keeping the dome centered as it moves; and providing adequate power handling without adding excessive mass. Tweeters contribute to a well-balanced and rich audio experience by focusing on the higher sound frequencies.<ref>{{Cite web |date= |title=How to Wire Tweeters to Speakers: A Step-by-Step Guide [2023] |url=https://www.audiofavorite.com/how-to-wire-tweeters-to-speakers/ |website=AudioFavorite }}</ref>

Tweeters can also work in collaboration with the woofers that are responsible for generating the low frequencies or bass.<ref>{{Cite web |url=https://howstereo.com/ |title=Home |website=How Stereo |access-date=2019-01-30 }}</ref> 

Some tweeters sit outside the main enclosure in their own semi-independent unit, such as "[[super tweeter]]s". The latter plugs in and swivels to adjust the soundfield depending on listener position and user preference. The separation from the baffle is considered to be optimal under the theory that the smallest baffle possible is optimal for tweeters.<ref>{{Cite web |url=https://www.chicagotribune.com/1989/09/08/you-can-aim-ohms-egg-shaped-tweeter-enclosures/ |title=Chicago Tribune: Chicago news, sports, weather, entertainment }}</ref>