I use a Velodyne HGS-15 with a pair of KEF 104/2s. Frequencies below 80 Hz are shunted to the sub. Integration is seamless, and the KEFs sound more transparent and seem to generate a larger soundstage with the sub. And that subtle sense of vibration you experience in live pipe organs recitals is well reproduced. For 5.1, a center speaker and a pair of KEF 102/2s are switched in. But I prefer music in stereo.
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