As I mentioned before, a big clue is given in the grid to cathode short
description.

It takes a heck of a lot of energy to make these tube elements repeatedly
short. A parasitic bang is just such an animal.

Rich not only sells the kits cheap, but he provides the information to
"roll your own" on his web site.

cheers
skipp
http://sonic.ucdavis.edu

: Dale J. wrote:
: I doubt it's a parasitic, but if you want to explore that, Measures has
: his special parasitic kits for sale on his website.
: Cheers as they say
: Dale, K9VUJ