My understanding is the autoformers actually lower the efficiency of the speaker. I would contact Mr Speltz for an accurate answer.
I own CLS IIz's with a SFI Power 2. I also biamp. I think what you are attempting is an interesting experiment, but I would not bet the farm on it. A lot does come down to how loud you listen (I really like the CLS's at low levels).
I own CLS IIz's with a SFI Power 2. I also biamp. I think what you are attempting is an interesting experiment, but I would not bet the farm on it. A lot does come down to how loud you listen (I really like the CLS's at low levels).