Just wanted to pass on my sense that my 4343s are sounding better recently. Both 2231 woofers were re-foamed about a year or so ago and I think I'm still hearing very slight improvements in the very low end in the past few months. The bass just seems a little deeper than I remember, or was expecting on CDs that I've played many times before. Of course it could be a number of other things...including ME, but I suspect the surrounds and spiders are coming into form.
Tom