In my system 22000 was the preferred setting. 47K was too bright and lower than 22K blunted the high frequencies.
All my experience based on equipment at that time, changing phono stage or even tone arm wire can skew the tonal balance enough to prefer another setting. That's why Benz is so open ended on the specification for load.
Don't be afraid to try a few different setting and if you must install new resistors (as opposed to throwing a switch) go for something good quality like Roederstein, Holco or Caddock.
All my experience based on equipment at that time, changing phono stage or even tone arm wire can skew the tonal balance enough to prefer another setting. That's why Benz is so open ended on the specification for load.
Don't be afraid to try a few different setting and if you must install new resistors (as opposed to throwing a switch) go for something good quality like Roederstein, Holco or Caddock.