A bass reproduction speaker apparatus comprising a speaker unit having a vibration system, {TAIL ~ a cabinet} to which {HEAD ~ the speaker unit} is attached, a movable magnet that moves together with the vibration system of the speaker unit, and a stationary magnet 
to is attached
A bass reproduction speaker apparatus comprising a speaker unit having a vibration system , { TAIL ~ a cabinet } to which { HEAD ~ the speaker unit } is attached , a movable magnet that moves together with the vibration system of the speaker unit , and a stationary magnet
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