"Dual impedance" typically refers to a characteristic of certain electronic components, particularly speakers and audio equipment. It indicates that a device can operate at two different impedance levels. For example, a dual-impedance speaker may be rated for two different impedances, such as 4 ohms and 8 ohms. This design allows for greater flexibility in how the speaker can be used with different amplifiers or audio systems, which may have specific impedance requirements for optimal performance.
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