I've B&W CDM9nt's. With a Velodyne DD-12 it was a nice improvement in bass. However, with the DD-18 I moved up to, it is now astonising. What that sub adds to the soundstage is amazing and that is just for vinyl. My system is pretty modest and the sub retails for quite a bit more then the speakers but it has rounded everything out just right, for me at least. The quality of these Digital Drive series and their built-in equalization sofware complete with mic to analyze your room should floor you. Try one (the bigger the better). They've even balanced inputs.
BTW... to the kid up above Rich (Rar1), I got quite the frowny face from my bride of 24 years when I told her I was upgrading the 12" sub to the 18" monster. Basically just WAF stuff. But since the moment it was fired up in our system she still marvels at the added bass and never even mentioned taking it out (something I promised her if she didn't like the upgrade) We never knew about the 'Over 45' Bass Rule and between us we're 117 years old. I'm glad we didn't!
BTW... to the kid up above Rich (Rar1), I got quite the frowny face from my bride of 24 years when I told her I was upgrading the 12" sub to the 18" monster. Basically just WAF stuff. But since the moment it was fired up in our system she still marvels at the added bass and never even mentioned taking it out (something I promised her if she didn't like the upgrade) We never knew about the 'Over 45' Bass Rule and between us we're 117 years old. I'm glad we didn't!