In addition, an offset in the displacement direction of the vibration system of the speaker unit is detected with a Hall element and fed back to a power amplifier in order to correct {HEAD ~ the offset} in {TAIL ~ the displacement direction} of the vibration system of the speaker unit 
in
In addition , an offset in the displacement direction of the vibration system of the speaker unit is detected with a Hall element and fed back to a power amplifier in order to correct { HEAD ~ the offset } in { TAIL ~ the displacement direction } of the vibration system of the speaker unit
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 HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH