You might try and make a small increase on the EQ... like a little mountain peak... from 25Hz-63Hz to get more bump... jus don't overdrive the mids depending on where you set the low cut of for them.
For the high end on the EQ try the same from 10KHz - 20KHz
Check the high and low impedance spikes on each of your speaker's response curve. keep all speakers real work between these spikes. They ony operate well between these and this is not the same as many manufacturer's claimed responseThis lets you estimate the "3dB down"... A 3dB change on your EQ is perceived as a doubling (if your increasing it) or halving (if you're decreasing it) of volume (dB is actually a unit of energy aka sound pressure)
See my answer to your PM. Ultimately it's what your ears tell you!