I just strung a set of Savarez 150R's on a Pono tenor, and the 'A' string seems to have really high tension. However, I also have a set of these on my Moore Bettah tenor, and the tension feels good. I notice that the Stringsbymail website shows the 'A' string diameter in the 150R set to be 0.52mm, but the new set I just received has revised diameters and tensions listed on the back and now both the 'A' and 'G' are listed as 0.57mm. Instead of the previously listed 4.3 kg tension on the 'A' (for the 0.52mm), it is now shown as 5.1 kg.
I had considered using the Craig Brandau set that incorporates the 541R, 542R, and 543R strings, but the 541R is actually 0.62mm diameter. Won't this have even higher tension than the 150R set, or are the 540R series a different density string than the 150R? Anyone using the 540R trebles think their 'A' string is too high tension?
-Steve