Well I did that but I don't know that provides any reasonable comparison. Those speakers just don't have a lot of fidelity built into them to begin with and I was able to play some music with a lot of high frequency hi hat sounds, the kind that would yield the best comparison - same type of thing happening, a flattening out of the sound and loss of nuance and dynamics with some fuzziness and slight distortion in that range, but it's hard to tell if it's the signal being fed to them or the fact they're just crappy speakers. They don't make a very good control group.
The lower ranges sounded decent, full bodied especially considering their small 4" woofers. But that's consistent with what's happening indoors as well.