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Push-Pull ultralinear output transformer: matching impedance.


2010-12-16 7:10 pm
Hi, i've a Hammond 1650ka output transformer and (Za-a 3.4k, ultralinear) and i want to replace a bad outputr trasformer that i burn out. But the specs say that it fit for a quad of 6l6/EL34/6550, rated 60w. I dont'have enough space to put 4 output tubes. Which tubes fits well for a pair output tubes push-pull ultralinear mode (VDC 475v 400ma) with 3.4k impedance? Maybe KT120 or KT150?