I have the Klipsch promedia 2.1 on my computer and they are THX certified. While they sound good for what I paid for ($100 used), it's nothing out of this world so I agree that the THX cert doesn't mean much. Plus, you having all your individual equipment THX approved doesn't mean nothing if you're not following all the THX placement and room treatment rules which for most is not practical.

Bruno
M80s/VP180/QS8s/EP600/AVR-890
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"The problem is choice..."