Hi,
I hope you won't mind me writing in English since my German isn't very good.
I've just completed the build of a TT66, and may I just say what a fantastic amp it is. Such good clean tones and absolutely no noise or humming.
I now plan to build a head cabinet and I wonder how much extra room I should have between the KT66 tube, which is the biggest, and the top wood.
I plan to use some sort of grill to help ventilation and the back will be completely open.
How much would you say is enough? A few centimeters?
Thanks for helping.
/Carruw