I recently bought this laptop after viewing descriptions of it on the sites of several reputable dealers, who all advertise it as having a built-in subwoofer. Imagine my shock when I received it to find no such thing!...and to make it worse, to have the Acer Support insist that "that model does not have a subwoofer". I haven't seen any spec sheet anywhere - even on the Acer site - that clearly states that there are different versions of the 7720-4428. Has anyone had a similar experience? What is my best course of action here? I mean, I find the machine satisfactory otherwise, but hey, I really did expect great sound!