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