Negative stiffness is generated for {TAIL ~ a vibration system} of {HEAD ~ 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 order to increase equivalently internal volume of a cabinet 
Negative stiffness is generated for { TAIL ~ a vibration system } of { HEAD ~ 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 order to increase equivalently internal volume of a cabinet
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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