MID-RANGE
Text: Mid-range is a rather arbitrary term for the central portion of the audible range. In current usage, the term refers to frequencies anywhere from about 500 to 7000 Hz. An amplifier (or speaker) that emphasizes the tones in the 2000 to 5000 Hz range makes the soloist seem closer to the listener, but the falsified tone color may lead to listening fatigue.
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Source: 103