Probably re-debunked recently, John. Gene published this study in Audioholics by speaker designer Dick Pierce a few years ago and more recently in Audioholics Mark Sanfilipo covered the point. It appears that amplifier damping has very little to do with "controlling" the speaker, almost nothing until the low single digits that some tube designs exhibit. Anything much beyond the start of the double digits seems to be mostly hot air and even inexpensive solid state designs run around 50 or more.

-----------------------------------

Enjoy the music, not the equipment.