How much burn-in for Soliloquy 5.3s

Hi,

I recently purchased a demo pair of Soliloquy 5.3s, which I figured might have enough hours on them (dealer said he thought they had about 50 hrs) to sound reasonably good out of the box. Wrong! They sound absolutely horrible; very compressed, bass muddy and distant, treble subdued to the point of being almost not existant. At one point I actually thought the tweeter was nonfunctional since I could barely hear any extension at all. I hope I didn't make a big mistake. Anyway, I am hoping that folks out there with experience with these might be able shed some light (sound!) on what I can expect.