They are even prettier than the pictures make them out to be: I was really impressed with the esthetics. I did not hook them up to an SPL meter, so cannot comment on how well they pulled 45Hz. The ratings are from the manufacturer.
I chose to use a pair of PSBs instead. The KEFs were brighter, better projecting, and I love the single-point sound (these are on a desk and about 2' from my ear), but the PSBs sound more full.
I would have loved to keep them as surrounds in my HT, but they cannot compete with the $2k 'digm S2s, and I don't have room to add a subwoofer at the PC where they were hooked up... so they had to go to make room for the next toy.
I'm hoping to find a speaker that combines the best of the Q1 and PSB (perhaps the Kef RQ line). I will say that I've become enamored of the UniQ-style driver for "really close to my ear" speakers.
