I purchased a pair of CF-2's about a year ago at an estate sale along with an Onkyo TX-NR3008 receiver for $110 total. Both items were in near mint condition. I had to find replacement feet for the speakers which took a little trial and error but now have them. The Onkyo needed a new DSP board after I used it for a few months (bad chips on the original board). Both are working great in my second audio room now. I have done nothing else to the speakers. I really enjoy these speakers and think they sound excellent with all varieties of music.
I have the CF-2's on 4" stands which put the tweeter at head level. They are slightly toed in. They are off the back wall about two feet. Where they are setup, there is ample bass. I do not think they were used much before I bought them. Now that I use them daily, they have really opened up.
In my other room I have a Marantz SR7013 paired with Klipsch RP-8000F's which I also love. It is easy for me to compare the different voices of each of these fine speakers. Depending on what I am listening too, I will prefer one over the other.
I lucked into the CF-2's but am very happy I did.