A dozen years ago the Detropit Symphony was destitute, a once-proud institution reduced to penury. But “the $60-million Max M. Fisher Music Center, which opens Oct. 11, puts an exclamation point on what experts say is one of the most improbable turnarounds in the history of U.S. orchestras. The DSO pulled itself up by its financial bootstraps, rebuilt its neighborhood, forged innovative civic partnerships and reinvented itself as a model 21st-Century arts institution. The DSO has woven itself deep enough into the fabric of the city that nearly everyone has a stake in its future.”