Air Tight ATM-1 schematic, bias setting and tube



Hello,

I live in Italy and I have an Air Tight ATM-1, serial number is 01427.

After 10 years of good service the amplifier needs assistance because the new valves (Svetlana) became too red in few minits and the technician needs same informations how to regulate it or the electronic scheme.

AIR TIGHT is not imported in Italy and I do not have any official assistance.

Are the Golden Dragon (Svetlana) good for my ATM-1?
What else I can use?

Sorry for my bad english

Francesca
francescamarras1638
Dear Francesca:
I am a proud owner of a ATM 1 too. I had to do reserch recently to repair my amplifier too. In the process I came up to an incredible person, Tom Tutay of Transition Audio Design in Florida USA. Incredible changes modifications (I even got cables designed by him) to my equipment. He will surely solve your problems.
His telephone num: (850)244-3041; fax num(850)244-2498.
Any help needed?
John
johnjimenez@tld.net
PS
I have seen native americans with worse english than ours.