John Matheson wrote:

Ross, I didn't mean my post to be churlish - it just came out that way -
sorry. Maybe I had indigestion at the time. However criticism is what drives
improvement and I am not ashamed to play a part. I wasn't at CES so I can't
comment on your findings other than to say it doesn't surprise me. I haven't
had any reason to talk to Linkwitz - he is one of a thousand speaker DIY'ers
with and internet site.

er..he's rather a bit more than *that*, actually.

from
http://stereophile.com/interviews/503/

//
Siegfried Linkwitz was born in Germany in 1935. He received his
electrical engineering degree from Darmstadt Technical University
prior to moving to California in 1961 to work for
Hewlett-Packard. During his early years in the USA, he did
postgraduate work at Stanford University. For over 30 years Mr.
Linkwitz has developed electronic test equipment ranging from
signal generators, to network and spectrum analyzers, to
microwave sweepers and instrumentation for evaluating
electromagnetic compatibility.

He has also had a long and distinguished second career as an
audio engineering visionary. Along with Russ Riley he developed
the famed, and widely used, Linkwitz-Riley crossover filter in
the mid-1970s. Since then, he has contributed several important
technical papers covering a variety of measurement and speaker
issues to such publications as the Journal of the Audio
Engineering Society, Electronics (Wireless) World, and Speaker
Builder.
//