Q-man -- first, you need to make sure you can get shielded Atoms. The center channel will be sitting on (or very near to) your TV set, and you don't want an unshielded speaker that close to the tube (shielding here referring to shielding of the magnetic field from the speaker's magnet(s), which can screw with the display and even potentially damage the set).

For TV and movie watching, the center is pretty important. The CC-170 would probably be better at it and I would definitely recommend it if you can't get shielded Atoms, but if you can get shielded Atoms it might be worth a try. An idea -- borrow one of your surround Atoms (if you already have two sets of Atoms) and set it up as center with some demo material (I'd recommend Phantom Menace, as it proved to be a good test of front sound stage with my old speakers). You may want to turn your set off if you get any rainbows or distortion in the image and just listen. If it sounds good and you can get shielded Atoms, go with it.

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