You should be able to troubleshoot where the problem likely lies without shipping - presumably the sound is bad if you connect the speakers normally, so see if you can figure out how to open the cabinet to get to the drivers. Assuming you can (and I believe a call to Dyn would set you in the right direction) you can touch the leads from the amp that would normally go to the binding posts, to the posts on the individual drivers (low volume of course). If you get sound from the drivers, then they aren't blown and you likely have a problem in the crossover. If the drivers are blown, then you should be able to get the exact driver you need to acquire, and either buy it on ebay or directly from Dyn.
If you believe that direct current was applied to the speaker, you probably blew something in the x-over. In any case, if you call Dynaudio, they should be able to give you a reasonable quote for each driver, for replacing the x-over, and for shipping. They're very easy to work with.
If you believe that direct current was applied to the speaker, you probably blew something in the x-over. In any case, if you call Dynaudio, they should be able to give you a reasonable quote for each driver, for replacing the x-over, and for shipping. They're very easy to work with.