I'm using a Velodyne HGS-10 with a pair of KEF Reference 104/2s and I find it to be a seamless blend. You are unaware of the sub, except that very low frequencies, e.g. pedal notes of pipe organs, are rendered particularly well. I will be trying a HGS-15 in the system this weekend, and if it integrates as well, I'll add it.
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