… and tune down. Standard is now a half step or full step down. Tune down to Open C# or C.
Strings do the most moving and the more mass you get can moving the more that other parts of the instrument will move. This equals bigger tone. A resonator needs all those parts moving to realize the full sound potential. Get those cones loosened up a bit.
The strings we use are Daddario’s resonator flat top set, 16-56. If you tune down to Open C put a 17 and 20 up top. Trust me. It’s awesome.