BASS BOOM
Text: Bass boom refers to an unwanted bass resonance in a loudspeaker system. The effect is like that of speaking into a barrel; the resonance masks the natural tone color of the voice. Similarly, a speaker system whose resonances are too pronounced, or are at the wrong frequencies, falsifies the true character of sound, creating a hollow, thumpy bass that blurs the clarity of the music. Jukeboxes and poorly designed console phonographs are notorious for boomy bass.
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Source: 103