07-26-2014, 10:37 AM
Not a bad idea to take it to a tech. Before you turn it on. Running with 3 tubes for a little bit probably wouldn't hurt the amp, but it's best not to run it that way. You could pull the other middle tube and switch the impedance switch down to 2ohms. That would function perfectly assuming the amp has no other problems... But again. Best to have it checked by a tech first,
The filter caps should probably be replaced soon. They are 40 years old.
The filter caps should probably be replaced soon. They are 40 years old.