I had a problem with that voltage also; and the trans weighs about 5 lbs.
But this comes out of a Lafayette reciever so it may have used a voltage doubler.
Here's a better description. The primary side has 7 tabs.
Looking from left to right they are marked
E
6V 2.3A( This one is connected across the trans to the other secondary)
6v.6a tab.
117v/100v/0v Tabs 4&5&6
The last tab is blank; no writing.On the sec side;
6 tabs; starting from left to right;
6.3v 2.7a Tab 1&2
6v .6A tab 3 and 4
130V DC .16A tabs 5&6