Resistor replacement Wilson Sophia (original)...

These are only protective resistors...not part of the crossover.  Simply designed to keep one from damaging the drivers. Wilson offers these replacements for all their speakers and recommends the replacement based essentially on age.

hi, i have sophia 2 with Rogue tube amp Cronus Magnum iii (100w)

i saw in a box with manual, sophia ii pair resistors 27.3 ohms for woofer.

(default comes with 29,3 ohms)

I wonder if with 27ohms can improve something? help the amp with "less load"? Or does it just go more energy to the mid and tweeter ? (I know that these woofers are problematic because down up 3 ohms.)

It is going to reduce/alter the output of the bass.  The impedance as seen from the amp will barely change.

If you feel that there is too much bass, or it's flabby it's a worthwhile experiment.

Thank you Erik. Im going to try. 

I have too much bass and I feel that the rest of the frequencies are minimized by it. I feel an improvement when I remove 20% low frequencies with the digital equalizer.