Anybody out there got any original Rockola service manuals ? I need a decent
copy of the schematic for a 1478-85 stereo tube amp. There seems to be
plenty of copies on line, but all sourced from an original poor resolution
scan-to-jpg. I particularly need to know what the AC voltage is from the
transformer winding that feeds the HT supply for the amp. You can read the
text at the heater supply winding as 6.3 V as you would expect, but the HT
winding's voltage is illegible on the scan, no matter how much you zoom it.

Arfa