ravi,

If you are spending so much time in the bath that you are considering putting speakers in there, then I would ask one question: What the HELL are you doing in there?

If your question is really serious.... in reality, if you don't put the speakers directly in/over the shower, (and you turn on the exhaust fan), then there shouldn't be too much of a problem.

BTW - Are you afraid the titanium tweeters or aluminum woofers will rust/corrode?

Randyman