I am moving forward my project. The room I have to listen in is smaller (12 x 16) and I also need to keep 'hands' off the amp and other equipment, so it is all next door in a closet. This is fine, and I have resonable amount of air space around and above it (3'Wx2'Dx-3'H space). But I purchased thermal heat gun and noted temps a few times when I am listening for a few hours at medium to high levels.. it is Summer.. and all that together means tubes run 210F
Online googling and seems normal operating temp for main
power tubes is 200-240F. Once they reach operating temp, the glass is a terrible conductor so saw notes about "extending life" by using fans or even copper tape etc.
1) Is their anything wrong with using copper "radiator" on main power tubes to help radiate heat? (it can look dorky.. but in my case, it is in closet anyways)
2) Will this increase lifespan and do it without impacting quality
I did quick test and it does seem to help operating temp. I made a quick "crude" test one to see.. but can make ones that don't look as ugly later