Lemme' clarify what my thoughts here were a little bit:

1) the steamer trunk has small feet on it, as mentioned in the post, but I agree with Ernie here, 2 inch feet, on a carpeted floor, will leave about 1" of airspace, and major sound damping...cranking the sub should make up for some of this but, that brings me to my second train of thought from the above post...

2) don't most steamer trunks have old leather straps, buckles, hasps and the like on them? I am of course assuming this is a real steamer trunk, and an older one. IF this is the case, then how would you stop all these little things from vibrating. It just didn't sound to me like this was a regular cabinet of sorts, which I, as well, have placed NUMEROUS subwoofers in with only minimal vibrations and they were easily fixed.