If it matters, the bass rolloff on the Genelecs is:
"Bass roll-off control operating in 2 dB steps from 0 to -8 dB @ 50hz"
I think the attenuation is all below 60hz maybe even lower with the "roll-off". I'll need to play around with it. there's also a "bass Tilt" control but I wouldn't be using that I don't think.