Hello Fishtank, yes - McIntosh has processes that nobody else does. Watching the black glass faceplates being made is so cool. I first saw that in 1981, and the memory is still with me.
Hi Mr. , not actually added before the transformer is placed. The hot tar is poured into the housing in a liquid state, and seeps underneath the transformer, as well as all around it. Then it cools to seal the connections and it slightly contracts vs its heated state.
Hi Elsa, you may want to reach out to your dealer, especially if they are a servicing dealer, or perhaps to McIntosh support: www.mcintoshlabs.com/support/product-support
