Need guidance installing new Paramount transformers

[glynnw]

I admit in advance that I assemble these kits by carefully following instructions and couldn't do it without the pictures.  I am very ignorant of how most of it really works.  Trying to install new upgrade BH-5 and BH-7 transformers.

BH-5: On the "IN" side does the black wire go to terminal labeled "plate" or "ground"?  I assume the red wire then goes to the remaining one. 

BH-7:  Has 2 terminals, 1 marked with a black dot.  Does black wire go to "dot" terminal or other one?  Same assumption as above regarding red wire.

Thanks

[mqracing]

BH-5 output transformer:

The end with the product ID is the primary.   We use the convention of "the dot is hot" (+) .  This means that it is the AC positive-- this terminal goes to the plate of the tube.  The non-dotted terminal is AC ground (-). 

Secondary follows the same convention.  The dotted terminal is "hot" (+) and the non dotted terminal goes to ground (-).


BH-7 choke: The dotted terminal is the physical start of the winding.  I usually treat this as the high side (furtherest from AC ground).  But on the plate choke this is not critical.  Just be sure to orient both chokes the same way--- that's why I put the dot there--- so whatever you do you can do the same with each plate
choke.


MSL

 

[glynnw]

Thanks Mike - but I still need input from someone familiar with Paramount wiring because I do not know if the black or red wire going to B-5 is the positive.  I tried to look at the schematic and couldn't even find the 2 transformers in question.

[glynnw]

Apparently I solved my dilemma by declaring red to be positive in these 2 applications.