You can try removing the tweeter in one of the W22's and check to see if the connections are secure. That is the only other problem I can think of besides a bad tweeter that would cause a scratchy sound. It is very rare to have 2 bad tweeters or 2 loose connections but it is not impossible I guess. Bad luck, most definitely.

Cheers!

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne