Negative stiffness is generated for a vibration system of a speaker unit by using a movable magnet attached to the vibration system of the speaker unit and also a ring like stationary magnet arranged coaxially at the outer radius thereof in {HEAD ~ order} to increase {TAIL ~ equivalently internal volume} of a cabinet 
Negative stiffness is generated for a vibration system of a speaker unit by using a movable magnet attached to the vibration system of the speaker unit and also a ring like stationary magnet arranged coaxially at the outer radius thereof in { HEAD ~ order } to increase { TAIL ~ equivalently internal volume } of a cabinet
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH