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 {HEAD ~ 227 b} by {TAIL ~ about tens} of degrees 
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 { HEAD ~ 227 b } by { TAIL ~ about tens } of 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 HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH