Kef 107 vs 107/2

I presume that if you cross the 107s or 107/2s to a suitable sub below 80 Hz the KUBE is not needed; is that correct? I have a KUBE designed for use with 104/2s that I have never used, because I cross my 104/2s below 80 Hz to my Velodyne HGS-15. It seems logical to me that freeing the KEF drivers from very LF excursions can only enhance their airiness and transparency above the cross over. Although the 104/2s excellent full range speakers, the sub adds LF extension, noticeable especially with low pedal notes of pipe organs. The 104/2s seem to loose a bit of airiness when used full range with the sub, so I always cross at 80 Hz.

db

Since my previous post, I have replaced the 104/2s with 107/2s and 107/2 KUBE. The 107/2s had the surrounds professionally replaced shortly before I bought them. I cross them to the subs at 80 Hz, but in the setup I'm using (analog for an Oppo 95 to Cary 11a in bypass mode to KUBE to Proceed HPA 3) there is no bass management with DSD. It's obvious the 107/2s don't need to be supplemented by the subs for music. They are amazing speakers.

db