The energy sub you're looking at is a good choice for the money and environment. It probably has just enough to get him in trouble if he goes crazy, but should be fine and get the job done if he is respectful and doesn't try to show off.
butter and jelly please.
Home theater gladly not designed by ereed or bgtighe23. 65" JS9500, Marantz 7702MKII, Parasound Halo A31, ClassDaudio SDS470 4ch, RBH R56, 4xRBH R55, 2x RBH R5, Hsu VTF 2 MK 3 and VTF 3 for subwoofage, OnStage MS7701B mic stand with boom for improved Audussey XT32 calibrations. Listening space happily treated with 1" OC 703 rigid fiberglass. OPPO 203 or 205 soon.