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Cartridge Loading into Step-Up Transformer

I have read a lot about preamps and phono stages having the ability to put a load resistor in parallel to the cartridge.  Some products have flip switches, others have solderable terminals inside the unit to put in a custom valued resistor and others have a pair of external RCA jacks to put a resistor here.  Mt preamp has the latter.  However, if an external  setup transformer is used into a MM input, what is typically done to accommodate a load resistor?  Is the resistor in parallel with the primary or the secondary?  And is the resistance value typically different for a given cartridge that worked well into an active MC stage vs. a setup?  Any experiences, ideas, suggestions, etc., would be greatly appreciated.
John
jafox

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jafox OP
1,449 posts
 
Thank you very much for the input here.  The pasted links above provide for much education on the handling of the required gain and ultimately the loading.  I read this material several times to understand the subtleties. 

I just bought to Hashimoto HMU-7 SU transformers to use with a newly diamond re-tipped AQ 7000 which has one of the lowest coil resistances at 2 ohms.  And I will look to use both the 1:15 and 1:30 options of this SU.

Using the rule that the input impedance of component B (the SU transformer) must be at least 10x the output impedance of component A (the cartridge), I have just done the math to determine the starting points for some load resistors in parallel with the 47k MM input and compare with none here at all.  Then I can tune by ear to get the optimal.  This will be fun.

Thank you again.
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