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Matching stepup to phono stage

If I use a moving coil stepup transformer (Quicksilver) before my phono stage (CJ Premier 15) do I keep the the CJ Premier 15 loading at 47K or do I change the CJ loading to the recommended loading of the catridge. The input impedance of the Stepup is 250 ohms.

Thanks,
Rich
rhbblb1

Showing 2 responses by clio09

clio09
3,346 posts
 
Rhbblb1 - if you send me an email offline I will send you a spreadsheet that I used that will do the calculations based on different step-up ratios in combination with the resistor values of the step-up and phono stage.

As an example. I used a K&K Audio step-up with a Hagerman Trumpet. The step-up had a 10:1 ratio. Using 47k ohm resistors in the step-up in parallel with the Trumpets 47k ohms yielded 940 ohms.
clio09
3,346 posts
 
Herman, yes that is correct, in series. Sorry for the confusion. The spreadsheet I have does the calculations correctly.

Thom Mackris gave me the spreadhseet and I believe the Galibier Design website has a link where you can download it. It is quite useful.
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