i would suggest a 2nd order 16hz high pass filter with this sub. other options may work, but this one would make me comfortable.
inuke can't set filters below 20hz, but that is no problem. we just start with one at 20, then add a little shelf to push it down to 16.
here is exactly what to put into the inuke dsp.
step 1: on the filter tab, 2nd order highpass filter at 20hz (butterworth, 12db / octave)
step 2: on the parametric eq tab, filter 1, gain -4db, frequency 20hz, type: HS12
then use filters 2, 3, 4, etc. for any other EQ that you wish to add.
this additional step is only necessary in some instances depending on how much drive voltage the avr/pre-amp produces.
since the high pass with negative gain lowered the overall level by 4db in this case, that can be raised back up by adding the same amount of gain on the filter/crossover tab. so go back to that tab and increase the gain as shown with the red arrow.