I just heard of Zilch's passing today, over at diyAudio; on my thread where he helped me mate some drivers to my "Captain Nemo" copper speakers for Burning Man. This saddened me a great deal.
In 2009, while discussing on how to mate a Beta 10CX with a decent HF driver, Zilch chimed in on my thread. He suggested that I come on over, bring one of the "Nemo" speakers and we'll do some testing/swapping.
We played with them for the afternoon; trying different HF drivers, looking at spectral maps and tweaking the Zilchlab x-overs I had bought. He posted the test results on my thread, if anyone wishes to see them.
This resulted in great sounding, robust "Nemo" speakers that have had to endure the heat of Black Rock Desert for 10 days, every year since. They will go again to Burning Man this year, for their 3rd trip, after being Zilched at Zilch labs. I would never had got them to sound so nice if it wasn't for his friendly help. His knowledge was invaluable...
In the following year, as a thank-you; I designed an "Econo-wave" logo for him. He liked it with a few revisions. I did them but I never heard back from him. I guess he was getting rather ill by then.
So, to the folks involved with Econowave, please PM me if you would like it.
Here's the page where Zilch first chimed in on my speakers-
http://www.diyaudio.com/forums/multi-way/133490-need-good-drivers-copper-speaker-cabinet-7.html
I'll really miss him. But his knowledge lives on in the threads, us, and especially our speakers!
regards- Kent