A speaker terminal is a type of electrical connector often used for connecting audio equipment to speakers or amplifiers. The terminals are used in pairs with each of the speaker cable's two wires being connected to one terminal in the pair. Since speaker cables are polarized, the terminals are most often color-coded so that the positive wire connects to the red and the negative to the black terminal.
The terminal consists of a spring-loaded metallic pincher which opens when the level is pressed, and when released will tightly grip the conductor which has been inserted into it. This type of terminal is popular because it does not require any special connector to be applied to the end of the wire; instead the wire is simply stripped of insulation on its end and inserted into the terminal. This terminal may be used with a variety of wire gauges as well as with either solid core or stranded wires.
DIY projects sometimes reuse speaker terminals for other applications using bare wire leads.
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