Have you heard the speakers yet? I wouldn't worry so much about the specs. I may be mistaken but I really believe that some manufacturers are liberal with their specifications and after listening to some speakers I kind of have to wonder how they came up with the specs.
I think I found some specs on the speakers that you're looking at and, although they are only spec'd from 70hz up, the measurements on those speakers showed a low frequency extension down to something like 50hz at -3 db and drops like a brick from there.
My point is that you really have to listen to them. I'm running a pair of tiny Minuets. They have a claimed frequency range that starts at 55hz. I'm thinking that that's a bit optimistic considering that they have 3.5" woofers, but measurements that I've seen in reviews show that this isn't too far off from what they actually do.
In use, I usually cross my sub over at 60 - 65hz and it fills the low end out nicely.
I think I found some specs on the speakers that you're looking at and, although they are only spec'd from 70hz up, the measurements on those speakers showed a low frequency extension down to something like 50hz at -3 db and drops like a brick from there.
My point is that you really have to listen to them. I'm running a pair of tiny Minuets. They have a claimed frequency range that starts at 55hz. I'm thinking that that's a bit optimistic considering that they have 3.5" woofers, but measurements that I've seen in reviews show that this isn't too far off from what they actually do.
In use, I usually cross my sub over at 60 - 65hz and it fills the low end out nicely.