Thank you Bob, or mr. Latino for the replyh and photo of the thermals ! Just showed it to my 4 year old and he pointed out the black things were transformers =) His dad had been watching some videos on youtube on transformer basics and all through that he kept asking questions on the subject lol..
I see the front tube substantially cooler than the middle one stuck between it and the output transformer - no arguing these things get warm and that is how they were designed really - no vacume tube without a heater in it - but I imagine there is some gains to be had having the standard ST-70 cage's sides more vented or also fully perforated. That the original ones were not was probably a form over function or cost design decision. Something to worry about later or perhaps not at all
Again, the new st-70 released last year - it just does not look right to me ^^
hehe I know Marc and Dale - did the math and came to the conclusion I could make pretty good skewers over this thing if I can solve the grease drip problem!
Perhaps it is all a bit like heat & wear in harddiskdrives ( a little more my area ) Yes the heat does cause some additional wear on some aspects of the drive, but in practical terms the difference between temp A and temp B operation does not contribute substantially ( within reason ) to their earlier than intended demise.. Going to finish reading up on (tube) amplifier basics, finesse my wife's counter demands in terms of expendatures in other areas and hopefully take the leap some time soon in building an ST-120 kit. Will just order the standard ST-70 cage possibly modify it a little or a lot Or not..
Last edited by Roy D on Mon Jan 15, 2018 11:45 am; edited 1 time in total