Naming characterizing tension is not standardized across string brands. Here's the actual info on the two sets you have, at the same scale length:
So the high E, the B, and the D have significantly higher tension. However, what you feel also depends on string diameter (smaller for Savarez trebles) and bending stiffness of materials which are different here - nylon vs. "carbon". So the smaller diameters of the Savarez trebles should also make you feel like they are higher tension. (I don't know how bending stiffness compares but it is possible its effect goes in the same direction).
Key message, though, is that "normal', "high", "low", etc. labels referring to tension cannot be used to infer tension across brands. Hannabach's low maybe close to D'Addario's high (don't know if this was the actual example but there is such a degree of mismatch between labels and tensions across brands).
The actual tension as put on the guitar also depends on the length scale (and companies do not quote tension numbers at the same length scale; or are silent at what length scale their numbers were measured/derived). So it is a bit of a mess. The only thing is that gradation of tension labels within one brand corresponds to set (or trebles set or basses set within) tension going in the implied direction.
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Last edited by guitarrista on Sat Dec 29, 2018 6:49 am, edited 4 times in total.
1982 Anselmo Solar Gonzalez