When the bass reproduction speaker apparatus does not operate, e.g., when the power source of {HEAD ~ the bass reproduction speaker apparatus} is turned off, the geared motor 227 a rotates the rotation shaft 227 b by about tens of {TAIL ~ degrees} 
When the bass reproduction speaker apparatus does not operate , e.g. , when the power source of { HEAD ~ the bass reproduction speaker apparatus } is turned off , the geared motor 227 a rotates the rotation shaft 227 b by about tens of { TAIL ~ degrees }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD 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 TAIL TAIL TAIL TAIL TAIL