Check out this ad for a pair of D15s. The seller states the same happened to them in shipping and he had to have them repaired. You might ask him how and where he was able to get them fixed.
http://cgi.audiogon.com/cgi-bin/cl.pl?spkrfull&1072501990&2&3&4&
Good luck!
http://cgi.audiogon.com/cgi-bin/cl.pl?spkrfull&1072501990&2&3&4&
Good luck!