You gotta love the large glowing Eimac tubes. Here are some 30's and 40's ads for the Eimac 150 tube. I could not find a good pic of one fired up so if you have one send it too me. Tube porn should not be so hard to find. I understand the president of the Eimac Tube Fetish Club resides in Memphis and has been known to do perverse things with these tubes in circuits ;)
Thanks Dave for sending the link. Now here is the money shot. Beautiful.
“I like big horns and I cannot lie, those little horns make me cry” Tom Danley "Simple. A horn is just a reasonably rigid boundary for an air column. Now all you have to do is figure what shape to make it." PWK