sound best with 150. make no mistake.-
6 responses Add your response
To me your results suggest an unloaded input impedance of 470 ohms (By chance does it use a 1:10 SUT?)
In any case the numbers work out close enough and you just need ot find the resistor to use in parallel with 470 ohms to get your desired load. To get 100 ohms you need a 127 ohm loading plug.
Measured R__Actual Load=(R*470)/R+470)
I had the balanced Einstein and made a couple loading plugs. IIRC the balanced unit had an imput impedence of 940 ohms (or something close to that) with no loading plugs inserted. The number was found in the owners manual. I calculated the resistors used to be in parallel with the 940 ohms.
Dave has the formula above and you can use google to get more info.