"The EVO-2 L/R's listening-window response measures +1.04/-5.57 dB 200 Hz to 10 kHz. The -3dB point is at 59 Hz. Impedance reaches a minimum of 3.23 ohms at 96 Hz. Sensitivity is 89 dB from 500 Hz to 2 kHz."
Not that you have to worry about the 3 ohms impedance w/ your arc welder amps.
But even if you didn't have those powerful amps, I guess setting the XO to 100Hz would allow the subs to handle the low impedance.
From 3m, to reach 100dBC per speaker would require 113 watts. To reach 105dBC per speaker would require 358 watts.