I have a pair of CLS speakers. I was about to buy new panels for them when I found another speaker that has as good a midrange performance as the CLS (very hard to do) and sensitivity to work with a tube amp. So the CLS speakers are in my backup system. Many have had good luck taking the panels out and washing them (in the shower and then rinse with DI water) but $2800 for a new speaker of this quality is cheap.
You will likely need a sub to help the low end.
One of the best systems I've ever heard was based on the CLS IIz.
Jerry