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2. Speaker wire - Wikipedia

   en.wikipedia.org/wiki/Speaker_wire

   Speaker wire is a passive electrical component described by its electrical impedance, Z. The impedance can be broken up into three properties which determine its performance: the real part of the impedance, or the resistance, and the imaginary component of the impedance: capacitance or inductance. The ideal speaker wire has no resistance ...

3. Speakon connector - Wikipedia

   en.wikipedia.org/wiki/Speakon_connector

   A Speakon connector is designed with a locking system that may be designed for soldered or screw-type connections. Line connectors (male) mate with (female) panel connectors and typically a cable will have identical connectors at both ends. If it is needed to join cables, a coupler can be used (which essentially consists of two panel connectors ...

4. Oxygen-free copper - Wikipedia

   en.wikipedia.org/wiki/Oxygen-free_copper

   Oxygen-free copper (OFC) or oxygen-free high thermal conductivity (OFHC) copper is a group of wrought high-conductivity copper alloys that have been electrolytically refined to reduce the level of oxygen to 0.001% or below. [1][2] Oxygen-free copper is a premium grade of copper that has a high level of conductivity and is virtually free from ...

5. Long-range acoustic device - Wikipedia

   en.wikipedia.org/wiki/Long-range_acoustic_device

   A long-range acoustic device (LRAD), acoustic hailing device (AHD) or sound cannon is a specialized loudspeaker that produces sound at high power for communicating at a distance. It has been used as a method of crowd control, which has caused permanent hearing damage, having an extremely high decibel capacity (up to 160 dB measured at one meter ...

6. Audio and video interfaces and connectors - Wikipedia

   en.wikipedia.org/wiki/Audio_and_video_interfaces...

   Carries standard definition video and does not carry audio on the same cable. Mini-DIN 4-pin Component. In popular use, it refers to a type of analog video information that is transmitted or stored as three separate signals. Either RGB interfaces or YPbPr: 3 RCA jacks: Composite, S-Video, and Component: VIVO = Mini-DIN 9-pin with breakout cable.

7. Electrostatic loudspeaker - Wikipedia

   en.wikipedia.org/wiki/Electrostatic_loudspeaker

   Schematic showing an electrostatic speaker's construction and its connections. The thickness of the diaphragm and grids has been exaggerated for the purpose of illustration. An electrostatic loudspeaker (ESL) is a loudspeaker design in which sound is generated by the force exerted on a membrane suspended in an electrostatic field.