Time Windows and subs?

Do these have good bass? I think the specs say it goes down to (roughly) 35hz. I have one but I don't "feel" the bass maybe because it has 2 smaller woofers instead of 1 larger one.
I had the Time Windows and they play well but not low, so a good sub should help them a bunch.
I used to own a pair of Time Windows and I loved them. I found the bass to be very satisfying. The 2 smaller drivers allowed the bass to be very quick. I would be careful not to lose the quality with a subwoofer as the sub may cause the bass to be slower. Other than my current Gallo Ref 2's, the Time Windows were my favorite speakers.