[quote name='Bill Fitzmaurice' timestamp='1458907359' post='3012020']
If you mean the room was well damped with absorbent material that would reduce the mids and highs. Damping becomes less effective as frequency goes down and wavelengths become longer. However, while the actual level of highs and mids are reduced with damping, they'll sound more prominent, because you're hearing more of the direct sound from the speaker and fewer reflections, which smear the tone.
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Fascinating - I always enjoy your pearls of wisdom Bill, thanks!