Upon power down, the switch over to a line to line configuration allows for the series connection of two windings, necessarily contributing {HEAD ~ the back EMF energy} from a pair of windings to {TAIL ~ the voice coil} 
Upon power down , the switch over to a line to line configuration allows for the series connection of two windings , necessarily contributing { HEAD ~ the back EMF energy } from a pair of windings to { TAIL ~ the voice coil }
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 HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL