I heard a pair of Soundlab Ultimate 1's driven by a pair of CAT mono block amps in a fairly large room of an audio friend.
Absolutely no need for one or more subs.
I have owned several other stats, and even tried the ML Depth sub with CLS11z when I had them.
I preferred the CLS without the sub.
Less bass wallop, but also a more unified sound.
When I ran a full out HT set up with two pair of CLS and the Theatre centre channel the Depth came into it's own on the .1 end of things.
I also had two Velodyne ULD 12 on a pair of Quad 63, that added more bass but again you gain in some areas and lose in others.
If your stats go down to the mid 30's as the ones I have now do(Acoustat 3, servo amped)I don't think you will need to add a sub.
Absolutely no need for one or more subs.
I have owned several other stats, and even tried the ML Depth sub with CLS11z when I had them.
I preferred the CLS without the sub.
Less bass wallop, but also a more unified sound.
When I ran a full out HT set up with two pair of CLS and the Theatre centre channel the Depth came into it's own on the .1 end of things.
I also had two Velodyne ULD 12 on a pair of Quad 63, that added more bass but again you gain in some areas and lose in others.
If your stats go down to the mid 30's as the ones I have now do(Acoustat 3, servo amped)I don't think you will need to add a sub.